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Radio Design Labs

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    • RDL RU-MLB4 Mic/Line Bi-Directional Network Interface

      RDL RU-MLB4 Mic/Line Bi-Directional Network Interface

      The RU-MLB4 modules are Dante audio network interface products compatible with microphones and line-level audio equipment inputs and outputs. These modules are designed to be mounted in equipment racks, closets, conference tables and on shelves or backboards in commercial/industrial installations.

      APPLICATION: The RU-MLB4 is a high quality converter that provides professional line-level outputs from four Dante network received audio channels. It also converts four professional or consumer line-le

           

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          Item #: RDL-RU-MLB4

          Availability: In Stock

          Our Price: $582.20

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        • RDL STM-2X Switched Microphone Preamplifier - 35 to 65 dB Gain

          RDL STM-2X Switched Microphone Preamplifier - 35 to 65 dB Gain

          The RDL STM‑2X is the ideal choice in many installations where a microphone preamplifier is required, and is the ideal choice where either a toggle‑type switch or push‑to‑talk switch is to be provided for microphone control, particularly if condenser microphones are used.

          Required Power Supply RDL PS24V Sold Separately

          • Quiet Switching of Condenser Microphone
          • Remote Microphone Soft‑Switching
          • Switch a Mic‑Level Source to a Mic or Line Level Output
          • Remote Toggle Swit






           

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          Item #: STM-2X

          Availability: In Stock

          Our Price: $158.49

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        • RDL PS-24AS 500mA AC/DC Power Supply For Stick-Ons & Rack Ups

          RDL PS-24AS 500mA AC/DC Power Supply For Stick-Ons & Rack Ups

          Unit powers multiple, similar Stick Ons and Rack-Ups. Call our Tech Support for compatibility of non similar units.

           

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          Item #: PS24V

          Availability: In Stock

          Our Price: $24.06

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        • RDL STA-2A Dual High Gain Line Amplifiers

          RDL STA-2A Dual High Gain Line Amplifiers

          The STA‑2A is a dual‑channel, line‑level audio preamplifier. Each channel is identical. The audio inputs are bridged at 20 kΩ and accept either an unbalanced or a balanced audio signal. Gain is adjustable from unity to +24 dB using a 25‑turn precision audio taper trimming potentiometer. The output line driver circuits are designed to drive long balanced audio lines into 600 Ω loads.

          The STA‑2A features wideband circuitry for excellent phase response, low no


             

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            Item #: STA-2A

            Availability: Usually ships in 3-10 business days

            Our Price: $145.25

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          • RDL RU-LB2P Line-Level Bi-Directional Network Interface - PoE

            RDL RU-LB2P Line-Level Bi-Directional Network Interface - PoE

            The RU-LB2 modules are Dante audio network interface products compatible with line-level audio equipment inputs and outputs. These modules are designed to be mounted in equipment racks, closets, conference tables and on shelves or backboards in commercial/industrial installations.

            APPLICATION: The RU-LB2 is a high quality converter that provides professional line-level outputs from two Dante network received audio channels. It also converts two professional or consumer line-level sources to Dante

                 

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                Item #: RDL-RU-LB2P

                Availability: Usually ships in 3-10 business days

                Our Price: $459.50

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              • RDL TX-J2 Unbalanced Input Transformer

                RDL TX-J2 Unbalanced Input Transformer

                The RDL TX-J2 Unbalanced Input Transformer is part of Radio Design Labs TX Series and features unbalanced stereo inputs to summed balanced mono output.

                TX Series modules are application-specific modules for the A/V and related industries. Many TX modules offer galvanic transformer isolation. Module functions include signal detection, switching, amplification, format conversion, line driving, mixing, distribution, twisted-pair sending/receiving and more. Each TX is a compact module engineered to p

                     

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                    Item #: TX-J2

                    Availability: In Stock

                    Our Price: $57.49

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                  • RDL HR-DDA4 Digital Audio Distributor - 1x4

                    RDL HR-DDA4 Digital Audio Distributor - 1x4

                    The HR-DDA4 is the ideal choice in installations requiring high quality distribution of a digital audio signal. The input and each of the four outputs support AES/EBU, S/PDIF or AES-3ID formats. The HR-DDA4 automatically detects a valid input on any of the four input jacks: S/PDIF optical, S/PDIF coaxial, AES-3ID or AES/EBU. The input is decoded, reclocked and retransmitted to four individually buffered outputs. Front-panel LEDs display the digital audio format and sample rate of a valid source










                     

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                    Item #: HR-DDA4

                    Availability: Usually ships in 3-10 business days

                    Our Price: $620.95

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                  • RDL DD-BN2ML Wall-Mounted Bi-Directional Mic/Line Dante Interface 2 x 2

                    RDL DD-BN2ML Wall-Mounted Bi-Directional Mic/Line Dante Interface 2 x 2

                    The DD-BN2ML is a complete wall-mounted Dante audio network interface. It features one XLR mic or line input and one mono-summed Mini-jack line input on the front panels, plus two line outputs on a rear-panel detachable terminal block. Special software is not required to configure the DD-BN2ML. The XLR input provides three switches that may be set from the front of the unit when the cover plate is not installed. One switch enables or disables P48 phantom; the second switch selects the mic or lin







                       

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                      Item #: RDL-DD-BN2ML

                      Availability: Direct Ship From Manufacturer

                      Our Price: $498.96

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                    • RDL RU-MLD4 Microphone / Line Distribution Amplifier - 1x4

                      RDL RU-MLD4 Microphone / Line Distribution Amplifier - 1x4

                      The RU-MLD4 is a four channel audio distribution amplifier. The input and all four outputs may be connected through the front-panel XLR jacks or on the rear panel detachable terminal blocks. The input accepts either a balanced microphone or line level signal. Each of the four outputs provides either a microphone or line level signal. Both the front-panel XLR connectors and the rear-panel terminals are active at all times. The RU-MLD4 may be rack-mounted with the XLR jacks facing forward, or may

                         

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                        Item #: RU-MLD4

                        Availability: Usually ships in 3-10 business days

                        Our Price: $256.95

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                      • RDL ST-TC1 Telephone System Coupler - CO Line Simulator

                        RDL ST-TC1 Telephone System Coupler - CO Line Simulator

                        The ST-TC1 is intended to be connected to an on-site telephone system switching unit KSU. It is NOT intended to be connected directly to a telephone CO line. Connections from the ST-TC1 go into the telephone switching unit as if the ST-TC1 was an incoming phone line.

                        When the KSU seizes the line to the ST-TC1, a relay contact closure is provided which can be used to control a variety of equipment, such as a paging system or radio system. The closure is maintained as long as the line is seized. A

                           

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                          Item #: ST-TC1

                          Availability: Usually ships in 3-10 business days

                          Our Price: $100.95

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                        • RDL ST-SSR1 Line-Level Audio Switch - 2x1

                          RDL ST-SSR1 Line-Level Audio Switch - 2x1

                          The ST-SSR1 was designed for absolute silent switching of audio signals. It supports two balanced line-level inputs and one balanced output. Each can be used unbalanced as well. The ST-SSR1 is perfect for switching between two input signals or as a silent On/Off switch for a single channel. Performance is in keeping with the technical standards for which RDL has become known. The user can program the module for either fast or soft switching.

                          The SELECT input feeds the OUTPUT when the TRIG termina

                           

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                          Item #: ST-SSR1

                          Availability: In Stock

                          Our Price: $103.95

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                        • Radio Design Labs D-SH1M Stereo Headphone Amplifier

                          Radio Design Labs D-SH1M Stereo Headphone Amplifier

                          The D/DS-SH1M is used in applications requiring headphones of any impedance to be driven from consumer or professional audio sources. It is ideally suited to applications as diverse as language translation, museums, interview studios and music stores. The -SH1 is a dual channel headphone amplifier with balanced/unbalanced left and right inputs. Each input accepts operating levels between -20 dBV and +20 dBu. Two recessed slide switches located on the side of the rear enclosure are set prior to m

                             

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                            Item #: RDL-D-SH1M

                            Availability: Usually ships in 3-10 business days

                            Our Price: $134.95

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                          • RDL TX-AT1S Audio Isolation Transformer with Suppression

                            RDL TX-AT1S Audio Isolation Transformer with Suppression

                            • Studio Quality Bifilar Audio Transformer
                              Transient and RF Suppression
                              Terminal Block Transformer Connections
                              Galvanic Isolation
                              1:1 Transformer Coupling
                              Transformer to Drive 600 Ohm Line
                              Convenience of RDL TXs
                              Frequency Response: 20 Hz to 20 kHz (+/- 0.1 dB)
                              THD: < 0.035% ( 50 Hz to 20 kHz, +4 dBu input) 0.001% (Typ. 1 kHz, +4 dBu input)
                              Input / Output Level: +4 dBu, +22 dBu max.
                              CMRR: > 85 dB (balanced input, 50 to 60 Hz)

                             

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                            Item #: TX-AT1S

                            Availability: Usually ships in 3-10 business days

                            Our Price: $95.95

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                          • Radio Design Labs RU-ADA8D 8 Channel Stereo Audio Distribution Amplifier

                            Radio Design Labs RU-ADA8D 8 Channel Stereo Audio Distribution Amplifier

                            The RU-ADA8D is an eight channel stereo audio distribution amplifier with input and output gain adjustments and input level metering. The module may be operated in mono to provide up to sixteen distributed mono signals. The inputs and outputs are connected on rear-panel detachable terminal blocks.

                            Each of the two line level inputs accepts either a balanced or an unbalanced signal. Each input is equipped with a front panel INPUT GAIN trimmer. Input signal levels between -14 dBV unbalanced and +9 d

                                 

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                                Item #: RDL-RU-ADA8D

                                Availability: In Stock

                                Our Price: $370.95

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                              • RDL ST-VCA3 Voltage Controlled Amplifier

                                RDL ST-VCA3 Voltage Controlled Amplifier

                                The ST-VCA3 is used in applications requiring smooth audio level control from a remote control panel, potentiometer or dc voltage (0 to 10 V). Installation in series with the audio input of a power amplifier allows remote control of that amplifier's level. For installations where it is preferred to keep the audio localized in the rack, audio controls are extended outside the rack from the ST-VCA3. Many installations benefit from avoiding long-term potentiometer wear from audio running through th

                                   

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                                  Item #: ST-VCA3

                                  Availability: Usually ships in 3-10 business days

                                  Our Price: $117.95

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                                • RDL RM-MP12A Audio Monitor Panel - 12 Line or Speaker Inputs

                                  RDL RM-MP12A Audio Monitor Panel - 12 Line or Speaker Inputs

                                  Each RM-MP12 input may be individually calibrated for unbalanced consumer, balanced professional, 8 Ohm speaker line or constant voltage speaker lines. There is a variable intensity LED on the front panel to show audio presence for each input. If the RM-MP12 is set to the interlocking operating mode, front-panel pushbuttons select one of the twelve inputs to feed the calibrated meter, front-panel speaker (or external speaker if connected) and headphone jack.

                                  In the mixing mode, the buttons allow

                                     

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                                    Item #: RM-MP12A

                                    Availability: Usually ships in 3-10 business days

                                    Our Price: $699.95

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                                  • RDL EZ-HDA6 1x6 Stereo Headphone Distribution Amp - Rear-Panel Outputs

                                    RDL EZ-HDA6 1x6 Stereo Headphone Distribution Amp - Rear-Panel Outputs

                                    The EZ series offers unparalleled flexibility. Each unit is fully labeled on the front and rear for use either as a finished product or as a utility module. Installation of multiple products is quick and easy using the comprehensive range of EZ rack mounts, chassis, bezels, drawers and accessories. High quality full-size switches, long life controls, quality connectors, solid-state audio and video switching, gold plating and superior engineering combine to make EZ the best value in the industry.

                                         

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                                        Item #: EZ-HDA6

                                        Availability: Usually ships in 3-10 business days

                                        Our Price: $172.95

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                                      • Radio Design Labs RU-ADA4D 4 Channel Stereo Audio Distribution Amplifier

                                        Radio Design Labs RU-ADA4D 4 Channel Stereo Audio Distribution Amplifier

                                        The RU-ADA4D is a four channel stereo audio distribution amplifier with input and output gain adjustments and input level metering. The module may be operated in mono to provide up to eight distributed mono signals. The inputs and outputs are connected on rear-panel detachable terminal blocks.

                                        Each of the two line level inputs accepts either a balanced or an unbalanced signal. Each input is equipped with a front panel INPUT GAIN trimmer. Input signal levels between -14 dBV unbalanced and +9 dBu b

                                             

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                                            Item #: RDL-RU-ADA4D

                                            Availability: In Stock

                                            Our Price: $241.49

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                                          • RDL ST-DA3 Line Level Distribution Amplifier - 1x3

                                            RDL ST-DA3 Line Level Distribution Amplifier - 1x3

                                            The ST-DA3 gives you the advantages of an audio distribution amplifier PLUS you can put it where you need it. The ST-DA3 allows bridging of any audio line, adjusting the gain, and driving up to three high or low impedance, balanced or unbalanced loads. The ST-DA3's wideband circuitry produces the unsurpassed pure clarity, low-distortion and low-noise for which RDL products are known.

                                            The ST-DA3 features RDL's SupplyFlex power input configuration. The module will operate directly from floating 24

                                               

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                                              Item #: ST-DA3

                                              Availability: In Stock

                                              Our Price: $136.95

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                                            • RDL FP-BUC2 Balanced to Unbalanced Converter - 2 Channel

                                              RDL FP-BUC2 Balanced to Unbalanced Converter - 2 Channel

                                              The FP-BUC2 is the ideal choice for connectorized conversion from balanced to unbalanced audio. This module features two identical active (transformerless) channels. Gold contact XLR jacks are utilized for the balanced input channels. Each output is unbalanced, connected through a gold-plated phono jack. A level trim potentiometer is provided for each channel.

                                              The FP-BUC2 circuitry features low-noise, low-distortion and excellent headroom and crosstalk performance and the superior audio clarity f

                                                 

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                                                Item #: FP-BUC2

                                                Availability: Usually ships in 3-10 business days

                                                Our Price: $171.95

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                                              • RDL RU-MX5ML 5 Channel Mic/Line Audio Mixer with Phantom Power

                                                RDL RU-MX5ML 5 Channel Mic/Line Audio Mixer with Phantom Power

                                                The RU-MX5ML is the ideal choice in many applications where a combination of balanced mic and/or balanced or unbalanced line-level signals needs to be mixed with the ability for additional expansion. All connections are made using detachable terminal blocks on the rear panel. Four of the RU-MX5ML inputs can accept either mic or line inputs. The fifth input is for line level sources.

                                                24 V phantom is individually switch selectable for each mic input. The output from one RU-MX5ML may connect to the

                                                   

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                                                  Item #: RU-MX5ML

                                                  Availability: Usually ships in 3-10 business days

                                                  Our Price: $254.95

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                                                • RDL ST-LCR3 Logic Controlled Relay - Dual Alternate Pulse

                                                  RDL ST-LCR3 Logic Controlled Relay - Dual Alternate Pulse

                                                  The ST-LCR3 is ideally suited to applications where momentary pulses are needed from a single control signal. The module provides a momentary pulse when a logic signal at its input first becomes active. A separate momentary pulse is provided when the logic signal at the module input becomes inactive.

                                                  Two logic inputs are available on the ST-LCR3. Either of these inputs may be used. Terminal 1 is internally pulled high to +5 Vdc. This input becomes active when an external closure or open-collector

                                                     

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                                                    Item #: ST-LCR3

                                                    Availability: Usually ships in 3-10 business days

                                                    Our Price: $121.49

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                                                  • RDL HR-MCP2 Professional Dual Microphone Compressor

                                                    RDL HR-MCP2 Professional Dual Microphone Compressor

                                                    The HR-MCP2 is a dual channel microphone compressor that produces a consistent audio output level over wide variations (up to 25 dB) in the microphone input level. Rear-panel switches allow setting each output to mic or line level. Each channel can therefore be used as a mic-level in-line compressor or as a microphone preamplifier with compression. The unique circuit design preserves full studio-quality low-noise performance at any gain setting. The HR-MCP2 is compatible with dynamic and condens

                                                         

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                                                        Item #: RDL-HR-MCP2

                                                        Availability: Usually ships in 3-10 business days

                                                        Our Price: $485.49

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                                                      • RDL STP-1 Universal Audio Attenuator - 2 Channel

                                                        RDL STP-1 Universal Audio Attenuator - 2 Channel

                                                        The STP-1 is a pair of convenient attenuator pads that can be located at the precise location that attenuation is needed. The low-cost STP-1 eliminates the costly labor of figuring and assembling fixed pads. Multi-turn trimmers in the STP-1 permit precise adjustment of levels without the need to connect any jumpers or external resistors. The STP-1 operates in either high or low impedance, balanced or unbalanced circuits. The wiring legend is printed on the case for easy installation.

                                                        • Audio Level




                                                         

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                                                        Item #: STP-1

                                                        Availability: In Stock

                                                        Our Price: $59.49

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                                                      • RDL EZ-HK1 Stereo Audio Hum Killer

                                                        RDL EZ-HK1 Stereo Audio Hum Killer

                                                        The EZ-HK1 is a superior-quality stereo audio transformer isolation module for use with unbalanced, high impedance audio inputs. Input and output connections are provided on gold-plated RCA jacks.

                                                        The shield connection of each INPUT jack is electrically isolated from the case and from the output ground. The shield connection of each OUTPUT jack is connected to the case shield through a rear-panel ground-lift switch.

                                                        The EZ-HK1 eliminates hum due to ground loops when it is installed between an un

                                                           

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                                                          Item #: RDL-EZ-HK1

                                                          Availability: In Stock

                                                          Our Price: $83.49

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                                                          The concept of Application-Specific-Modules was first introduced by RDL more than twenty years ago - a concept promoting unsurpassed value and performance. As the inventor of Application-Specific-Modules, RDL continues to lead the industry with their solutions to specific problems as well as building blocks of quality audio/video system designs. Markertek is the largest in-stock source for Radio Design Labs Products.

                                                          Markertek is an authorized dealer for the entire Radio Design Labs line. If you don't see what you're looking for, contact us and we'll do our best to get it for you.

                                                           

                                                           

                                                           
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