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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 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: In Stock

            Our Price: $145.25

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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 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 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: Usually ships in 3-10 business days

                  Our Price: $57.49

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                • RDL ST-UBA2 Unbalanced to Balanced Amplifier - 2 Channel

                  RDL ST-UBA2 Unbalanced to Balanced Amplifier - 2 Channel

                  The ST-UBA2 is used in any application requiring conversion from unbalanced consumer format signals to professional +4 dBu. It may be used to balance audio from CD players, cassette decks, computer sound cards, televisions, and a wide variety of other unbalanced sources. The mono sum output may be used to drive patch-bay jacks, monitors or subwoofer amplifiers.

                  Separate Dual-LED VU metering is provided for the left and right outputs. A green LED illuminates at 15 dB below +4 dBu. The intensity of

                     

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                    Item #: ST-UBA2

                    Availability: In Stock

                    Our Price: $148.95

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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 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 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 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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                        • RDL FP-MX3R Remote Controlled Line Level Mixer

                          RDL FP-MX3R Remote Controlled Line Level Mixer

                          The FP-MX3R is the ideal choice where a user-accessible mixer must control the volume of multiple sources. The mixer accepts balanced or unbalanced audio sources through a detachable terminal block. FP-MX3R outputs are provided in balanced and unbalanced formats. Two unbalanced outputs are available to feed the mono mixer output to a stereo amplifier input. Remote control of the mixer allows audio signals to be kept at a single equipment location. Audio is mixed by VCA circuits that are adjusted

                               

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                              Item #: RDL-FP-MX3R

                              Availability: Usually ships in 3-10 business days

                              Our Price: $289.85

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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 HR-UDC1 Universal Digital Audio Converter AES/EBU - SPDIF

                                RDL HR-UDC1 Universal Digital Audio Converter AES/EBU - SPDIF

                                The RDL HR-UDC1 is the ideal choice in installations where digital audio signals must be converted between consumer and professional formats. The input and output support AES/EBU, S/PDIF and AES-3ID formats. The HR-UDC1 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, re-clocked and retransmitted to the output. All pro/consumer, emphasis, and sampling frequency bits common to both S/PDIF and AES/EBU stan

                                     

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                                    Item #: HR-UDC1

                                    Availability: Usually ships in 3-10 business days

                                    Our Price: $480.49

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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: In Stock

                                      Our Price: $100.95

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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: Usually ships in 3-10 business days

                                          Our Price: $241.49

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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 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-MX2 2 Channel Audio Mixer - Microphone or Line Input and Output

                                              RDL ST-MX2 2 Channel Audio Mixer - Microphone or Line Input and Output

                                              The ST‑MX2 is used in any application requiring mixing of two audio sources. A mic may be mixed with a line‑level music source. Two mics may be mixed to feed the mic or line level input of a power amplifier. A mic or professional +4 dBu line‑level mono sum is possible. It may be used to convert mono line‑level signals from consumer to professional, or from professional to consumer format. It may also be used as a microphone preamplifier, or conversely to adapt unbalanced

                                                 

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                                                Item #: ST-MX2

                                                Availability: In Stock

                                                Our Price: $132.49

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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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                                                    • 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: In Stock

                                                        Our Price: $121.49

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                                                      • RDL HR-ADC1 Analog to Digital Audio Converter

                                                        RDL HR-ADC1 Analog to Digital Audio Converter

                                                        The HR-ADC1 is a broadcast quality A/D converter that provides exceptional audio accuracy and clarity with any audio source or style. Superior analog performance fine tuned through audiophile listening practices produces very low distortion (0.0006%), exceedingly low noise (-135 dB) and remarkably flat frequency response (+/- 0.05 dB). This performance is coupled with unparalleled metering flexibility and programmability with average mastering level monitoring and peak value storage. With extern

                                                           

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                                                          Item #: HR-ADC1

                                                          Availability: Usually ships in 3-10 business days

                                                          Our Price: $607.49

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                                                        • RDL ST-LCR1 Logic Controlled Relay - Momentary

                                                          RDL ST-LCR1 Logic Controlled Relay - Momentary

                                                          The ST-LCR1 provides double-pole, double-throw dry switching contacts and LED indicator for relay closure. The ST-LCR1 provides momentary operation and is ideally suited where additional switching contacts are needed to be added to nearly any type of control signal.

                                                          Required Power Supply RDL PS24V Sold Separately

                                                          • Add Contacts to Any Control Signal
                                                          • Activation from Logic Circuits
                                                          • DPDT Switching Relay
                                                          • Open-Collector Switching
                                                          • Control from Switch, Button or Logic Circuits

                                                           

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                                                          Item #: ST-LCR1

                                                          Availability: In Stock

                                                          Our Price: $74.49

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                                                        • RDL ST-UMX3 3x1 Universal Audio Mixer - 3 Mic or Line Inputs x 1 Mic or Line Out

                                                          RDL ST-UMX3 3x1 Universal Audio Mixer - 3 Mic or Line Inputs x 1 Mic or Line Out

                                                          The ST-UMX3 is a three-channel audio mixer for combining mic-level or line-level signals to a single output. A MIC/LINE switch is provided for each input. A separate MIC/ LINE switch selects the output level. Each input features a separate preamplifier circuit, which isolates it from the other inputs. An audio taper single turn gain adjustment is provided for each of the three input preamps. Signals from the three preamps are actively summed and fed to the output amplifier which includes an RDL

                                                             

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                                                            Item #: ST-UMX3

                                                            Availability: In Stock

                                                            Our Price: $132.49

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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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