RACK-UPs are the original 1/3 rack width 1RU rack-mountable modules for the A/V, recording and broadcast industries. Module functions include mixing, switching, pre-amplification, power amplification, distribution, gain control, equalization and more. Some RACK-UP® modules are constructed in solid encapsulated durable industrial black plastic enclosures; MAX RACK-UPs are assembled using heavy duty extruded aluminum and steel panels. The rear panels feature clear bold white lettering for the terminal blocks and connectors. Reverse-printed front-panel polycarbonate laminates provide an attractive, durable finished appearance for rack-mounted or free-standing use.
Since RDL first originated 1/3 rack width modules, RACK-UPs have led the industry in economical, high-performance and cost-effective long life solutions in system designs. Multiple RACK-UP modules may be interconnected, or may be connected with other RDL modules to form all or part of an A/V system. Certain RACK-UP modules are often used free standing; all RACK-UPs may be rack mounted. A complete range of mounting options is available for systems comprised of multiple modules.
RACK-UP® modules provide input, output and control connections through terminal blocks and connector (or both) according to common usage in professional installations. Front panels are equipped with connectors, user controls and LED metering, as appropriate.
Functions and features provided by RACK-UPs, since their introduction, are still available today. This continuity in product offering and support makes RACK-UP® modules a preferred long-term resource for system design solutions. RACK-UP® SERIES modules are designed and manufactured in the U.S.A.

ACM-3
Amplitude Component Monitor
Highlights
• Maintain Clarity
• Maximize Loudness
• Maximize Stereo Separation
• Reduce Subcarrier Crosstalk
• Assure Consistency of your Signal Coverage
• Maintain Positive Control of Multipath Artifacts
• Maximize Performance From Your FM Transmitter
• Mount using RU Series Mounting Options

DRA-35R
RACK-UP DIN Rail Adapter
Highlights
• Mounts One RDL RACK-UP® Module to 35 mm DIN Rail
• Allows Full Access to the Front and Rear Panels of the Mounted Module
• Ideal for Use when Traditional Rack Mounting is Not Desired

RU-ADA4D
Audio Distribution Amplifier
Highlights
• Stereo Audio Distribution with 4 Outputs
• Mono Audio Distribution with 8 Outputs
• Front-Panel Input Level Trimmers
• Dual-LED VU Meter for Each Input Channel
• Front-Panel Output Level Trimmers
• Inputs and Outputs on Rear Panel Detachable Terminal Blocks
• Exceptional Audio Quality for the Most Demanding Applications

RU-ADA8D
Audio Distribution Amplifier
Highlights
• Stereo Audio Distribution with 8 Outputs
• Mono Audio Distribution with 16 Outputs
• Front-Panel Input Level Trimmers
• Dual-LED VU Meter for Each Input Channel
• Front-Panel Output Level Trimmers
• Inputs and Outputs on Rear Panel Detachable Terminal Blocks
• Exceptional Audio Quality for the Most Demanding Applications

RU-ADL2
Professional Audio Delay – 0 to 135 mS
Highlights
• Studio Quality, Low Noise DSP Audio Delay
• Separate Time Delays for Two Audio Outputs
• Adjustable Delay from 0 to 135 mS
• Large Numeric Display of Time Delay
• Fully Remote Controllable Audio Delay
• Provision to Disable Front Panel Adjustment
• XLR and Terminal Block Audio Connections
• Exclusive RDL Sure-Lok™ Supervision

RU-AFC2
Stereo Audio Format Converter
Highlights
• Unparalleled Audio Performance
• Unbalanced to Balanced Audio Conversion
• Additional Summed MONO Out
• Switch-Selectable Ground Lift for XLR Output Jacks
• Balanced to Unbalanced Audio Conversion
• Unbalanced RCA Connections on Front Panel
• Balanced XLR Connections on Front Panel
• Balanced Connections on Rear Panel Detachable Terminal Blocks
• Front-Panel Multi-Turn LEVEL Trimmers
• Dual-LED VU Meter for Each Channel
• Gold-Plated Connectors
• Exceptional Headroom and Frequency Response
• 1/3 Rack, High Density Rack Mounting

RU-ASX4D
Stereo Audio Selector 4×1
Highlights
• Local or Remote Controlled Switching
• Multiple Switching Control Points
• 4 Stereo Inputs to 1 Stereo Output
• Line-Level Audio Switching
• Balanced or Unbalanced Inputs and Output
• Gain Trim on Each Source
• Controllable Using Various RDL Remote Controls
• Open-Collector Output for Selected Input

RU-ASX4DR
Remote Controlled Stereo Audio Selector with VCA 4×1
Highlights
• Remote Controlled Switching and Level Control
• Multiple Remote Control Locations Possible
• 4 Stereo Inputs to 1 Stereo Output
• Line-Level Audio Switching
• External Level Control Using 10 kΩ Potentiometer or 0 to 10 Vdc
• 96 dB Attenuation Range in 0.5 dB Steps
• Noiseless Zero-Crossing Adjustment Steps
• Precise Level Tracking on Each Channel
• Balanced or Unbalanced Inputs and Output
• Gain Trim on Each Source
• Controllable Using Various RDL Remote Controls
• Open-Collector Output for Selected Input

RU-BR1
Mounting Bracket for RACK-UP Series
Highlights
• Mounts One RDL RACK-UP® Series Product Below a Horizontal Surface
• Black Powder Coated Finish to Match RACK-UP®s
• All-Steel Construction

RU-D1
RACK-UP Mount for Decora® Module
Highlights
• Mounts One RDL, or Other, Decora-Style Product in an RDL RACK-UP® Style Rack Adapter
• Ideal for Mounting RDL D-Series Remote Controls, Connector Plates and Loudspeakers
• Durable Laminate Front-panel Matches Appearance of RDL RACK-UP® Products

RU-EQ3
Three Band Audio Equalizer with Knobs – Terminal block
Highlights
• 3-Band Audio Equalizer
• Custom Tailored Audio Bandwidth
• User-Accessible Adjustments
• High-Density Rack-Mount Convenience
• Low-Noise, Low-Distortion Equalizer

RU-FN
Format-A to Network Interface
Highlights
• Converts RDL Format-A and Aux Source to Four Dante Network Channels
• Easy Installation with Format-A Connections on RJ45 through CATx Cable
• Format-A Audio Sources from Pairs A, B and C Converted to Dante
• Fourth Dante Audio Channel Fed from Unbalanced or Balanced Aux Line Input
• Front-Panel Gain Adjustment with Dual-LED VU Meter for Aux Input
• Signal LEDs Indicate Audio for Each of the Three Format-A Pairs
• High Resolution 24 Bit Analog to Digital Conversion
• Legendary RDL Analog Filtering Enhances Superb Audio Performance
• Powers Remote Format-A Senders through Format-A Input Jack
• LED Indicators Show Network Sync Status
• Normal or Hot-Standby Operation from PoE (Model RU-FNP)
• Compatible with Wide Array of RDL Format-A Active and Passive Senders
• Equipped for Rack Mounting or Surface Mounting

RU-FNP
Format-A to Network Interface
Highlights
• Converts RDL Format-A and Aux Source to Four Dante Network Channels
• Easy Installation with Format-A Connections on RJ45 through CATx Cable
• Format-A Audio Sources from Pairs A, B and C Converted to Dante
• Fourth Dante Audio Channel Fed from Unbalanced or Balanced Aux Line Input
• Front-Panel Gain Adjustment with Dual-LED VU Meter for Aux Input
• Signal LEDs Indicate Audio for Each of the Three Format-A Pairs
• High Resolution 24 Bit Analog to Digital Conversion
• Legendary RDL Analog Filtering Enhances Superb Audio Performance
• Powers Remote Format-A Senders through Format-A Input Jack
• LED Indicators Show Network Sync Status
• Normal or Hot-Standby Operation from PoE (Model RU-FNP)
• Compatible with Wide Array of RDL Format-A Active and Passive Senders
• Equipped for Rack Mounting or Surface Mounting

RU-FP1R
RACK-UP Filler Panel
Highlights
• Fills Unused Openings in any RDL RACK-UP® Series Mounting Adapter
• Matches the Appearance of RDL RACK-UP® Series Products
• All-Steel Construction

RU-HRA1
10.4″ Rack Mount for 1 RACK-UP Series Product
Highlights
• Mounts One RDL RACK-UP® Series Product in a 10.4″ Rack
• Occupies One RU in a 10.4″ Rack
• Easy Installation with Provision for Cable Harnessing
• All-Steel Construction

RU-LB2
Line-Level Bi-Directional Network Interface
Highlights
• Converts Standard Line-Level Audio Sources to Dante Network Channels
• Line-Level Inputs Accept Unbalanced -10 dBV or Balanced +4 dBu Signals with > 18 dB Headroom
• Front-Panel Gain Adjustment with Dual-LED VU Meter for Each Audio Input
• Converts Two Dante Network Audio Signals to Balanced Line Level
• Line-Level Outputs Provide +4 dBu with > 18 dB Headroom
• Signal LEDs Indicate Audio for Each of the Received Network Signal Channels
• Interfaces Two Dante Inputs and Two Dante Outputs
• High Resolution 24 Bit Analog to Digital and Digital to Analog Conversion
• Legendary RDL Analog Filtering Enhances Superb Audio Performance
• LED Indicators Show Network Sync Status
• Normal or Hot-Standby Operation from PoE (Model RU-LB2P)
• Equipped for Rack Mounting or Surface Mounting

RU-LB2P
Line-Level Bi-Directional Dante Interface
Highlights
• Converts Standard Line-Level Audio Sources to Dante Network Channels
• Line-Level Inputs Accept Unbalanced -10 dBV or Balanced +4 dBu Signals with > 18 dB Headroom
• Front-Panel Gain Adjustment with Dual-LED VU Meter for Each Audio Input
• Converts Two Dante Network Audio Signals to Balanced Line Level
• Line-Level Outputs Provide +4 dBu with > 18 dB Headroom
• Signal LEDs Indicate Audio for Each of the Received Network Signal Channels
• Interfaces Two Dante Inputs and Two Dante Outputs
• High Resolution 24 Bit Analog to Digital and Digital to Analog Conversion
• Legendary RDL Analog Filtering Enhances Superb Audio Performance
• LED Indicators Show Network Sync Status
• Normal or Hot-Standby Operation from PoE (Model RU-LB2P)
• Equipped for Rack Mounting or Surface Mounting

RU-LB4
Line-Level Bi-Directional Network Interface
Highlights
• Converts Standard Line-Level Audio Sources to Dante Network Channels
• Line-Level Inputs Accept Unbalanced -10 dBV or Balanced+4 dBu Signals with >18 dB Headroom
• Front-Panel Gain Adjustment with Dual-LED VU Meter for Each Audio Input
• Converts Four Dante Network Audio Signals to Balanced Line Level
• Line-Level Outputs Provide +4 dBu with >18 dB Headroom
• Signal LEDs Indicate Audio for Each of the Received Network Signal Channels
• Interfaces Four Dante Inputs and Four Dante Outputs
• High Resolution 24 Bit Analog to Digital and Digital to Analog Conversion
• Legendary RDL Analog Filtering Enhances Superb Audio Performance
• LED Indicators Show Network Sync Status
• Normal or Hot-Standby Operation from PoE (Model RU-LB4P)
• Equipped for Rack Mounting or Surface Mounting

RU-LB4P
Line-Level Bi-Directional Network Interface
Highlights
• Converts Standard Line-Level Audio Sources to Dante Network Channels
• Line-Level Inputs Accept Unbalanced -10 dBV or Balanced+4 dBu Signals with >18 dB Headroom
• Front-Panel Gain Adjustment with Dual-LED VU Meter for Each Audio Input
• Converts Four Dante Network Audio Signals to Balanced Line Level
• Line-Level Outputs Provide +4 dBu with >18 dB Headroom
• Signal LEDs Indicate Audio for Each of the Received Network Signal Channels
• Interfaces Four Dante Inputs and Four Dante Outputs
• High Resolution 24 Bit Analog to Digital and Digital to Analog Conversion
• Legendary RDL Analog Filtering Enhances Superb Audio Performance
• LED Indicators Show Network Sync Status
• Normal or Hot-Standby Operation from PoE (Model RU-LB4P)
• Equipped for Rack Mounting or Surface Mounting

RU-MLA2T
Dual Microphone / Line Preamplifier
Highlights
• Two-channel Audio Preamplifier
• Front Panel XLR Input / Output Jacks
• Detachable Input / Output Terminal Blocks
• Switch-selectable Mic or Line Inputs
• Switch-selectable Mic Gain and Phantom
• Gain Trim on Each Input
• Each Output Switch-selectable Mic or Line

RU-MLB2
Mic/Line Bi-Directional Network Interface
Highlights
• Interfaces Two Dante Inputs and Two Dante Outputs
• Converts Two Standard Mic or Line Audio Sources to Dante Network Channels
• Each Input is Switch-Selectable for Mic or Line
• No User or Installer Gain Adjustments are Required
• Automatic Microphone Gain of 40 dB for Condenser Mics and 60 dB for Dynamic Mics
• P48 Phantom is Provided on Each Microphone Input
• Line-Level Inputs Accept Unbalanced -10 dBV or Balanced +4 dBu Signals with > 18 dB Headroom
• Front-Panel Signal LED for Each Audio Input
• Converts Two Dante Network Audio Signals to Balanced Line Level
• Line-Level Outputs Provide +4 dBu with > 18 dB Headroom
• Signal LEDs Indicate Audio for Each of the Received Network Signal Channels
• High Resolution 24 Bit Analog to Digital and Digital to Analog Conversion
• Legendary RDL Analog Filtering Enhances Superb Audio Performance
• LED Indicators Show Network Sync Status
• Normal or Hot-Standby Operation from PoE (Model RU-MLB2P)
• Equipped for Rack Mounting or Surface Mounting

RU-MLB2P
Mic/Line Bi-Directional Network Interface
Highlights
• Interfaces Two Dante Inputs and Two Dante Outputs
• Converts Two Standard Mic or Line Audio Sources to Dante Network Channels
• Each Input is Switch-Selectable for Mic or Line
• No User or Installer Gain Adjustments are Required
• Automatic Microphone Gain of 40 dB for Condenser Mics and 60 dB for Dynamic Mics
• P48 Phantom is Provided on Each Microphone Input
• Line-Level Inputs Accept Unbalanced -10 dBV or Balanced +4 dBu Signals with > 18 dB Headroom
• Front-Panel Signal LED for Each Audio Input
• Converts Two Dante Network Audio Signals to Balanced Line Level
• Line-Level Outputs Provide +4 dBu with > 18 dB Headroom
• Signal LEDs Indicate Audio for Each of the Received Network Signal Channels
• High Resolution 24 Bit Analog to Digital and Digital to Analog Conversion
• Legendary RDL Analog Filtering Enhances Superb Audio Performance
• LED Indicators Show Network Sync Status
• Normal or Hot-Standby Operation from PoE (Model RU-MLB2P)
• Equipped for Rack Mounting or Surface Mounting

RU-MLB4
Mic/Line Bi-Directional Network Interface
Highlights
• Interfaces Four Dante Inputs and Four Dante Outputs
• Converts Four Standard Mic or Line Audio Sources to Dante Network Channels
• Each Input is Switch-Selectable for Mic or Line
• No User or Installer Gain Adjustments are Required
• Automatic Microphone Gain of 40 dB for Condenser Mics and 60 dB for Dynamic Mics
• P48 Phantom is Provided on Each Microphone Input
• Line-Level Inputs Accept Unbalanced -10 dBV or Balanced +4 dBu Signals with > 18 dB Headroom
• Front-Panel Signal LED for Each Audio Input
• Converts Four Dante Network Audio Signals to Balanced Line Level
• Line-Level Outputs Provide +4 dBu with > 18 dB Headroom
• Signal LEDs Indicate Audio for Each of the Received Network Signal Channels
• High Resolution 24 Bit Analog to Digital and Digital to Analog Conversion
• Legendary RDL Analog Filtering Enhances Superb Audio Performance
• LED Indicators Show Network Sync Status
• Normal or Hot-Standby Operation from PoE (Model RU-MLB4P)
• Equipped for Rack Mounting or Surface Mounting

RU-MLB4P
Mic/Line Bi-Directional Network Interface
Highlights
• Interfaces Four Dante Inputs and Four Dante Outputs
• Converts Four Standard Mic or Line Audio Sources to Dante Network Channels
• Each Input is Switch-Selectable for Mic or Line
• No User or Installer Gain Adjustments are Required
• Automatic Microphone Gain of 40 dB for Condenser Mics and 60 dB for Dynamic Mics
• P48 Phantom is Provided on Each Microphone Input
• Line-Level Inputs Accept Unbalanced -10 dBV or Balanced +4 dBu Signals with > 18 dB Headroom
• Front-Panel Signal LED for Each Audio Input
• Converts Four Dante Network Audio Signals to Balanced Line Level
• Line-Level Outputs Provide +4 dBu with > 18 dB Headroom
• Signal LEDs Indicate Audio for Each of the Received Network Signal Channels
• High Resolution 24 Bit Analog to Digital and Digital to Analog Conversion
• Legendary RDL Analog Filtering Enhances Superb Audio Performance
• LED Indicators Show Network Sync Status
• Normal or Hot-Standby Operation from PoE (Model RU-MLB4P)
• Equipped for Rack Mounting or Surface Mounting

RU-MLD4
Microphone / Line Distribution Amplifier – 1×4
Highlights
• Distribution Amplifier with Four Outputs
• Front Panel XLR Input / Output Jacks
• Detachable Input / Output Terminal Blocks
• Switch-selectable Mic or Line Input
• Switch-selectable Mic Gain and Phantom
• Gain Trim on Input
• Each Output Switch-selectable Mic or Line

RU-MLD4T
Microphone / Line Distribution Amplifier – 1×4 with transformer
Highlights
• Distribution Amplifier with Four Outputs
• Front Panel XLR Input / Output Jacks
• Detachable Input / Output Terminal Blocks
• Switch-selectable Mic or Line Input
• Switch-selectable Mic Gain and Phantom
• Gain Trim on Input
• Each Output Switch-selectable Mic or Line

RU-MX4
Professional 4 Channel Microphone/Line Mixer with Phantom Power – Microphone and line output
Highlights
• Four Channel Audio Mixer with Expansion Capability
• XLR Microphone Inputs, Phono Jack Line Inputs
• Switchable 24 V Phantom for Each Mic Input
• Mic or Line XLR Output, Switchable
• Unbalanced Line Output and Direct Input
• Integral Compressor/Limiter, Switchable
• Studio-Quality, Low-Noise Performance

RU-MX4L
Professional 4 Channel Line Level Mixer – Microphone and line Output
Highlights
• Four Channel Line-Level Audio Mixer
• XLR Balanced, Phono Jack Unbalanced Inputs
• Mic or Line XLR Output, Switchable
• Unbalanced Line Output and Direct Input
• Studio Quality, Low-Noise Performance
• Expansion Bussing Capability
• Additional Line Inputs Bussed to an RU-MX4
• Output Isolation Transformer (RU-MX4LT)

RU-MX4LT
Professional 4 Channel Line Level Mixer with Transformer – Microphone and line output
Highlights
• Four Channel Line-Level Audio Mixer
• XLR Balanced, Phono Jack Unbalanced Inputs
• Mic or Line XLR Output, Switchable
• Unbalanced Line Output and Direct Input
• Studio Quality, Low-Noise Performance
• Expansion Bussing Capability
• Additional Line Inputs Bussed to an RU-MX4
• Output Isolation Transformer (RU-MX4LT)

RU-MX4T
Professional 4 Channel Microphone/Line Mixer with Phantom Power & Transformer – Microphone and line output
Highlights
• Four Channel Audio Mixer with Expansion Capability
• XLR Microphone Inputs, Phono Jack Line Inputs
• Switchable 24 V Phantom for Each Mic Input
• Mic or Line XLR Output, Switchable
• Unbalanced Line Output and Direct Input
• Integral Compressor/Limiter, Switchable
• Studio-Quality, Low-Noise Performance

RU-MX5ML
5 Channel Mic/Line Audio Mixer with Phantom Power
Highlights
• Mic or Line Level Audio Mixer
• Five Channel Audio Mixer with Expansion Capability
• Inputs and Outputs on Detachable Terminal Blocks
• Switchable 24 V Phantom for Each Mic Input
• Balanced Mic and Line Outputs
• Expansion Bussing Capability
• Output Level dual-LED VU Metering
• Studio-Quality, Low-Noise Performance

RU-NFD
Network to Format-A Interface/Distributor
Highlights
• Converts Four Dante Network Audio Signals to RDL Format-A and Aux
• Easy Installation with Format-A Connections on RJ45 through CATx Cable
• Three Dante Audio Signals Feed Format-A Output Pairs A, B and C
• Fourth Dante Audio Signal Feeds Auxiliary Balanced +4 dBu Line Output
• Format-A Pairs are Distributed to Three Separate Format-A Output Jacks
• Signal LEDs Indicate Audio for Each of the Four Received Network Signal Channels
• High Resolution 24 Bit Digital to Analog Conversion
• Legendary RDL Analog Filtering Enhances Superb Audio Performance
• Powers Remote Format-A Receivers through Primary Output Jack
• External 24 Vdc Supply Powers Format-A Receivers through All Output Jacks
• LED Indicators Show Network Sync Status
• Outputs Mute when Digital Audio Inputs are Inactive
• Normal or Hot-Standby Operation from PoE (Model RU-NFDP)
• Compatible with Wide Array of RDL Format-A Active and Passive Receivers
• Equipped for Rack Mounting or Surface Mounting

RU-NFDP
Network to Format-A Interface/Distributor
Highlights
• Converts Four Dante Network Audio Signals to RDL Format-A and Aux
• Easy Installation with Format-A Connections on RJ45 through CATx Cable
• Three Dante Audio Signals Feed Format-A Output Pairs A, B and C
• Fourth Dante Audio Signal Feeds Auxiliary Balanced +4 dBu Line Output
• Format-A Pairs are Distributed to Three Separate Format-A Output Jacks
• Signal LEDs Indicate Audio for Each of the Four Received Network Signal Channels
• High Resolution 24 Bit Digital to Analog Conversion
• Legendary RDL Analog Filtering Enhances Superb Audio Performance
• Powers Remote Format-A Receivers through Primary Output Jack
• External 24 Vdc Supply Powers Format-A Receivers through All Output Jacks
• LED Indicators Show Network Sync Status
• Outputs Mute when Digital Audio Inputs are Inactive
• Normal or Hot-Standby Operation from PoE (Model RU-NFDP)
• Compatible with Wide Array of RDL Format-A Active and Passive Receivers
• Equipped for Rack Mounting or Surface Mounting

RU-NL2
Network to Line Level Interface
Highlights
• Converts Two Dante Network Audio Signals to Professional Line Level
• Line-Level Outputs Provide +4 dBu with > 18 dB Headroom
• Exceptional Low-Noise and Low-Distortion Performance
• Crosstalk Below the Noise Floor
• Signal LEDs Indicate Audio for Each of the Dante Audio Sources
• High Resolution 24 Bit Digital to Analog Conversion
• Legendary RDL Analog Filtering Enhances Superb Audio Performance
• LED Indicators Show Network Sync Status
• Outputs Mute when Digital Audio Inputs are Inactive
• Normal or Hot-Standby Operation from PoE (Model RU-NL2P)
• Equipped for Rack Mounting or Surface Mounting

RU-NL2P
Network to Line Level Interface
Highlights
• Converts Two Dante Network Audio Signals to Professional Line Level
• Line-Level Outputs Provide +4 dBu with > 18 dB Headroom
• Exceptional Low-Noise and Low-Distortion Performance
• Crosstalk Below the Noise Floor
• Signal LEDs Indicate Audio for Each of the Dante Audio Sources
• High Resolution 24 Bit Digital to Analog Conversion
• Legendary RDL Analog Filtering Enhances Superb Audio Performance
• LED Indicators Show Network Sync Status
• Outputs Mute when Digital Audio Inputs are Inactive
• Normal or Hot-Standby Operation from PoE (Model RU-NL2P)
• Equipped for Rack Mounting or Surface Mounting

RU-NL4
Network to Line Level Interface
Highlights
• Converts Four Dante Network Audio Signals to Professional Line Level
• Line-Level Outputs Provide +4 dBu with > 18 dB Headroom
• Exceptional Low-Noise and Low-Distortion Performance
• Crosstalk Below the Noise Floor
• Signal LEDs Indicate Audio for Each of the Four Dante Audio Sources
• High Resolution 24 Bit Digital to Analog Conversion
• Legendary RDL Analog Filtering Enhances Superb Audio Performance
• LED Indicators Show Network Sync Status
• Outputs Mute when Digital Audio Inputs are Inactive
• Normal or Hot-Standby Operation from PoE (Model RU-NL4P)
• Equipped for Rack Mounting or Surface Mounting

RU-NL4P
Network to Line Level Interface
Highlights
• Converts Four Dante Network Audio Signals to Professional Line Level
• Line-Level Outputs Provide +4 dBu with > 18 dB Headroom
• Exceptional Low-Noise and Low-Distortion Performance
• Crosstalk Below the Noise Floor
• Signal LEDs Indicate Audio for Each of the Four Dante Audio Sources
• High Resolution 24 Bit Digital to Analog Conversion
• Legendary RDL Analog Filtering Enhances Superb Audio Performance
• LED Indicators Show Network Sync Status
• Outputs Mute when Digital Audio Inputs are Inactive
• Normal or Hot-Standby Operation from PoE (Model RU-NL4P)
• Equipped for Rack Mounting or Surface Mounting

RU-NMP44
Network Mixing Processor – 4×4
Highlights
• Six Networked 4 x 1 Virtual Audio Mixers Dante / AES67
• Four Dante Network Inputs Feed Each Mixer
• Four Mixer Outputs Feed Dante Network Channels
• Two Mixer Outputs Feed Balanced Line-Level Outputs
• A Pair of Mixers may be Configured for Stereo Audio
• Module is Configured and Adjusted Using Network Control Software
• Compatible with RDL Networked Remote Controls
• Provides Level Adjustment in 1 dB Steps for Each Input of Each Mixer
• Provides Level Adjustment in 1 dB Steps for the Output of Each Mixer
• Automatic (VOX) Priority Ducking Assignable on Each Virtual Mixer
• Priority May be assigned to One of the Four Received Network Channels
• Selectable High Pass Filters for the Priority Input
• Adjustable Ducking Threshold, Attenuation Level and Recovery Delay
• Provides Four Stored Preset Configurations for Routing, Mixing and Levels
• Presets Activated by Network Commands, at Power-Up, or Using RDL RC4M Remote Control
• LED Indicators for Power and Network Sync
• Operation from PoE Power (Class 0, IEEE 802.3af) or external 24 Vdc

RU-PA40D
40 W Stereo Audio Amplifier with VCA – 8 Ω, with Power Supply
Highlights
• VCA Controlled Stereo Audio Power Amplifier
• 20 Watts RMS per Channel into 8 Ω – 40 Watts Total
• 15 Watts RMS per Channel into 4 Ω – 30 Watts Total
• Unbalanced RCA Jack Inputs; Balanced Detachable Terminal Block Inputs
• VCA Control on Detachable Terminal Block
• External Control Using 10 KΩ Potentiometer or 0 to 10 Vdc
• Compatible with RDL Remote Level Controls
• Switch-Selectable Stereo or Mono Operation
• Studio Quality, Aurally Transparent Compressor/Limiter
• Compressor/Limiter Controls Clipping
• Compressor Produces Maximized Average Output Power
• Compression Enabled Using Input Level Adjustments
• LED to Indicate Audio Compression Threshold
• High-Efficiency Class D Operation
• Thermal and Short-Circuit Protection
• RU-PA40D includes North American Cord; RU-PA40DE excludes Power Cord

RU-PA518
10 W Stereo / 18 W Mono Audio Amplifier – 8 Ω
Highlights
• 9 W RMS per Channel Stereo into 4 Ω
• 18 W RMS Mono into 8 Ω
• Selectable Stereo or Bridged Mono
• Selectable Built-In Peak Limiter
• 1/3 Rack, High-Density Rack Mounting
• Front-Panel Control for 2 Inputs

RU-RA3R
Rack adapter for RACK-UP series
Highlights
• Mounts up to Three RDL RACK-UP® Series Products in a 19″ Rack
• Occupies One RU in a 19″ Rack
• Easy Installation with Provision for Cable Harnessing
• All-Steel Construction

RU-SC2
RS-232/422 Serial Converter (Full-Duplex)
Highlights
• Conversion RS-232 ⇔ RS-422
• Serial Data Over Long Lines
• Rack-Mountable Convenience

RU-SH1
Stereo Headphone Amplifier – RACK-UP Series
Highlights
• Rack-Mounted Headphone Amplifier
• RACK-UP® Series Headphone Amplifier
• Integral Long-Life VCA Stereo Level Control
• Balanced or Unbalanced Inputs
• Switch-Selectable Input Sensitivity
• Switch-Selectable Mono (Left) or Stereo Operation
• Amplifier To Drive High or Low Impedance Headsets

RU-SM16A
2 Channel Audio Meter
Highlights
• Precision Audio Level Metering
• Digital 16 LED String Display Indication
• Two Mono Meters or Stereo Metering
• Line-Level, Speaker-Level or 25/70/100 V Audio Input
• Selectable Fixed or Variable Calibration
• Individual Channel Calibration Controls
• Selectable Peak or Average Metering
• Peak-Hold Display for +10, +14, +18 dB

RU-SM16D
4 Channel Audio Meter
Highlights
• Precision Audio Level Metering
• Digital 16 LED String Display Indication
• Four Mono Meters or Dual Stereo Metering
• Line-Level, Speaker-Level or 25/70/100 V Audio Input
• Selectable Fixed or Variable Calibration
• Individual Channel Calibration Controls
• Selectable Peak or Average Metering
• Peak-Hold Display for +10, +14, +18 dB

RU-SMA1
RACK-UP Mounting Plate – Mounts any RACK-UP module in a cabinet or other flat surface
Highlights
• Mounts One RDL RACK-UP® Series Product in a Cabinet or Other Flat Surface
• Ideal for Mounting RDL AMS Accessories Fastened in an AMS-RU4
• All-Steel Construction

RU-SQ6A
Sequencing Controller – Power up, power down
Highlights
• Control of Sequential Power-Up or Events
• Adjustable Up/Down Time Interval
• Open-collector Outputs
• Relay Contact Closures
• Up to Six Sequential Events
• Sure-Lok™ Output Supervision

RU-TP4PW
Power Inserter – Twisted Pair – Four sets of outputs – Signal loop-through
Highlights
• Power Four Sets of Remote Senders and Receivers from a Convenient Location
• 24 Vdc Input on dc Power Jack or Detachable Terminal Block
• Blue Power LED Shows Module is Receiving Power
• Green LEDs Indicate Correct dc Output Voltage on RJ45s
• Two Associated RJ45s Provided for Each Power Output
• One Associated RJ45 may Power Receivers
• The Other Associated RJ45 may Power Senders
• High-Density Rack Mounting Using RACK-UP Accessories

RU-TPDA
Active Distributor – Twisted Pair Format-A – RDL Format-A input to Four outputs
Highlights
• Input Jack Accepts Signals from All FORMAT-A Senders
• Output Jacks Drive All FORMAT-A Receivers
• Four Receivers may be Driven From Each Distributor
• LOOP OUT Jack Can Feed Additional Distributor
• Power Bus Provides Expansion to Adjacent Distributors
• Powers All Connected Senders and Receivers
• Dual-LED VU Meters Display the Level on Each Pair
• Blue Power LED Shows the Module is Receiving dc Power
• Rear-Panel LEDs Indicate Correct Output Voltage on RJ45s
• High-Density Rack Mounting Using RACK-UP Accessories

RU-TPS4A
Active Sender / Distributor – Twisted Pair Format-A – Three audio inputs to Four outputs
Highlights
• Balanced or Unbalanced Line-Level Inputs
• Front-Panel Trimmer Adjusts Level for Each Pair
• Dual-LED VU Meters Display the Level of Each Pair
• Output Jacks Drive All FORMAT-A Receivers
• Drive Up to Four Receivers From Each Distributor
• All Connected Receivers Powered from Distributor
• Blue Power LED Shows the Module is Receiving dc Power
• Rear-Panel LEDs Indicate Correct Output Voltage on RJ45s
• Power Bus Provides Expansion to Adjacent Distributors
• High-Density Rack Mounting Using RACK-UP Accessories

RU-UDA4
Stereo Audio Distribution Amplifier – 2×4 – RCA jacks
Highlights
• Stereo Unbalanced Audio Distribution
• Unity Gain on Both Channels
• Four Outputs per Channel
• Stand Alone or Rack-Mountable
• Exceptional Audio Performance
• 1/3 Rack, High-Density Rack Mounting

RU-VA2
Dual Adjustable Video Attenuator – BNC
Highlights
• Video Attenuation
• Two Channels
• Front-Panel Level Adjustment
• Stand Alone or Rack-Mountable
• 75 Ω Attenuators
• 1/3 Rack, High-Density Rack Mounting

RU-VCA2A
Digitally Controlled Attenuators
Highlights
• Local or Remote Audio Level Control
• Mono or Stereo Attenuation
• Noiseless Zero-Crossing Adjustment Steps
• 96 dB Attenuation Range in 0.5 dB Steps
• Data Bus Provides Adjustment of Multiple Modules
• Multiple Remote Control Locations Possible
• Precise Level Tracking on Each Channel
• Balanced or Unbalanced Line Inputs/Outputs
• Adjustable Ramp Up/Down Rates
• Controllable Using Various RDL Remote Controls
• Selectable Level Control Options:
• Pushbuttons (Internal or External)
• Momentary Pulses (External/Rotary Encoder)
• 0 to10 Vdc or 10 kΩ Potentiometer
• Selectable Power-Up Return to PRESET or LAST Level
• Selectable MASTER/SLAVE Mode for Control Expansion

RU-VCA6A
Digitally Controlled Attenuators
Highlights
• Local or Remote Audio Level Control
• Six Channel / Surround Attenuation
• Noiseless Zero-Crossing Adjustment Steps
• 96 dB Attenuation Range in 0.5 dB Steps
• Data Bus Provides Adjustment of Multiple Modules
• Multiple Remote Control Locations Possible
• Precise Level Tracking on Each Channel
• Balanced or Unbalanced Line Inputs/Outputs
• Adjustable Ramp Up/Down Rates
• Controllable Using Various RDL Remote Controls
• Selectable Level Control Options:
• Pushbuttons (Internal or External)
• Momentary Pulses (External/Rotary Encoder)
• 0 to10 Vdc or 10 kΩ Potentiometer
• Selectable Power-Up Return to PRESET or LAST Level
• Selectable MASTER/SLAVE Mode for Control Expansion

RU-VDA4B
NTSC/PAL Video Distribution Amplifier – 1×4 – BNC
Highlights
• Video Distribution with 4 Outputs
• Adjustable Gain Amplification
• Input LOOP OUT Jack
• Video 1 Volt Signal Indicator
• 10 MHz Bandwidth, NTSC or PAL
• 1/3-Rack, High-Density Rack Mounting

RU-RN04
Network to Mic/Line Interface 0x4
Highlights
• Default Configuration Converts 4 Dante/AES67 Channels to Mic or Line Outputs
• 4 X 4 Mixing Matrix Signal Paths and DSP Filters Expand System Design Flexibility
• Ultra-Low Latency: 1 ms Analog to Digital to Analog
• Analog Outputs Connect through XLR or Detachable Terminal Block
• Terminal Block Connections may be Wired Balanced or Unbalanced
• One DSP Filter for Each Dante/AES67 Input
• Three DSP Filters for Each Analog Output
• Selectable DSP Filters: None, Hi-Pass, Lo-Pass, Shelf Hi/Lo, Notch Boost/Cut
• All DSP Filters are Fully Programmable
• Each Output Stage Receives Audio through a Four-Channel Mixer
• Each Output Mixer Source is Adjustable From Unity (Fully On) to OFF
• Analog Outputs are Protected from External Phantom Voltages up to P48
• Each Analog Output Equipped with a Selectable 180° Polarity “Phase” Inverter
• Each Analog Output Equipped with a Selectable Line to Mic Attenuator Pad
• Analog Outputs Adjust in 1 dB Steps Below +4 dBu Line or -46 dBu Mic Level
• Each Output Attenuator is Adjustable in 1 dB Steps 0 to -63 dB then OFF
• Remote Controllable Using Compatible RDL Remote Controls
• Multicolor LED Indication of Audio Levels, Sync and Signal Presence
• Operates at 48 kHz or 96 kHz with High Resolution 24 Bit D/A Conversion
• All Operating Parameters and Settings Programmed using RDL CONSOLE

RU-RN22
Mic/Line Bi-Directional Network Interface 2×2
Highlights
• Default Configuration Converts Two Mic or Line Inputs to Dante/AES67
• Default Also Converts Two Dante/AES67 Channels to Mic or Line Outputs
• 4 X 4 Mixing Matrix Signal Paths and DSP Filters Expand System Design Flexibility
• Ultra-Low Latency: 2 ms Analog to Digital to Analog
• Analog Inputs and Outputs on XLR and Detachable Terminal Block
• Terminal Block Connections may be Wired Balanced or Unbalanced
• Analog Input Gains Adjustable From 0 dB to 60 dB in 3.3 dB steps
• P48 Phantom Individually Selectable per Input or Automatically Gain-Dependent
• Selectable Audio Compressor/Limiter on Each Analog Input
• One DSP Filter for Each Analog and Dante/AES67 Input
• Three DSP Filters for Each Analog and Dante/AES67 Output
• Selectable DSP Filters: None, Hi-Pass, Lo-Pass, Shelf Hi/Lo, Notch Boost/Cut
• All DSP Filters are Fully Programmable
• Each Output Stage Receives Audio through a Four-Channel Mixer
• Each Output Mixer Source is Adjustable From Unity (Fully On) to OFF
• Analog Outputs are Protected from External Phantom Voltages up to P48
• Each Analog Output Equipped with a Selectable 180° Polarity “Phase” Inverter
• Each Analog Output Equipped with a Selectable Line to Mic Attenuator Pad
• Analog Outputs Adjust in 1 dB Steps Below +4 dBu Line or -46 dBu Mic Level
• Dante/AES67 and Analog Outputs Adjustable in 1 dB Steps 0 to -63 dB then OFF
• Remote Controllable Using Compatible RDL Remote Controls
• Multicolor LED Indication of Audio Levels, Sync and Signal Presence
• Extremely Low Noise

RU-RN40
Mic/Line to Dante Network Interface 4×0
Highlights
• Default Configuration Converts Four Mic or Line Inputs to Dante/AES67 Outputs
• 4 X 4 Mixing Matrix Signal Paths and DSP Filters Expand System Design Flexibility
• Ultra-Low Latency: 1 ms Analog to Digital to Analog
• XLR and Detachable Terminal Block Provided for Each Input
• Terminal Block Connections may be Wired Balanced or Unbalanced
• Input Gains Adjustable From 0 dB to 60 dB in 3.3 dB steps
• P48 Phantom Individually Selectable per Input or Automatically Gain-Dependent
• Selectable Audio Compressor/Limiter on Each Analog Input
• One DSP Filter for Each Audio Input, Three DSP Filters for Each Dante Output
• Selectable DSP Filters: None, Hi-Pass, Lo-Pass, Shelf Hi/Lo, Notch Boost/Cut
• All DSP Filters are Fully Programmable
• Each Output Stage Receives Audio through a Four-Channel Mixer
• Each Output Mixer Source is Adjustable From Unity (Fully On) to OFF
• Provides Functions of Audio Mixer and/or Distribution Amplifier
• Dante/AES67 Outputs are Adjustable in 1 dB Steps 0 to -63 dB then OFF
• Remote Controllable Using Compatible RDL Remote Controls
• Multicolor LED Indication of Audio Levels, Sync and Signal Presence
• Extremely Low Noise

RU-RN44
Mic/Line Wired Bi-Directional Network Interface 4×4
Highlights
• Default Configuration Converts Four Mic or Line Inputs to Dante/AES67
• Default Also Converts Four Dante/AES67 Channels to Mic or Line Outputs
• 8 X 8 Mixing Matrix Signal Paths and DSP Filters Expand System Design Flexibility
• Ultra-Low Latency: 2 ms Analog to Digital to Analog
• Analog Inputs and Outputs on Detachable Terminal Block
• Terminal Block Connections may be Wired Balanced or Unbalanced
• Analog Input Gains Adjustable From 0 dB to 60 dB in 3.3 dB steps
• P48 Phantom Individually Selectable per Input or Automatically Gain-Dependent
• Selectable Audio Compressor/Limiter on Each Analog Input
• One DSP Filter for Each Analog and Dante/AES67 Input
• Three DSP Filters for Each Analog and Dante/AES67 Output
• Selectable DSP Filters: None, Hi-Pass, Lo-Pass, Shelf Hi/Lo, Notch Boost/Cut
• All DSP Filters are Fully Programmable
• Each Output Stage Receives Audio through a Eight-Channel Mixer
• Each Output Mixer Source is Adjustable From Unity (Fully On) to OFF
• Analog Outputs are Protected from External Phantom Voltages up to P48
• Each Analog Output Equipped with a Selectable 180° Polarity “Phase” Inverter
• Each Analog Output Equipped with a Selectable Line to Mic Attenuator Pad
• Analog Outputs Adjust in 1 dB Steps Below +4 dBu Line or -46 dBu Mic Level
• Dante/AES67 and Analog Outputs Adjustable in 1 dB Steps 0 to -63 dB then OFF
• Remote Controllable Using Compatible RDL Remote Controls
• Multicolor LED Indication of Audio Levels, Sync and Signal Presence
• Extremely Low Noise