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Radio Design Labs

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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: More on the way, usually ships in 3-10 business days

      Our Price: $137.80

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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...

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      Item #: ST-DA3

      Availability: In Stock

      Our Price: $142.43

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    • RDL ST-VP2 Automatic Ducking Module

      RDL ST-VP2 Automatic Ducking Module

      The ST‑VP2 can be wired into any line‑level input of a paging amplifier. A line‑level music source may be provided from a receiver, satellite decoder, tape or CD source. A line‑level voice source may be provided from a telephone paging system at line level, or from a microphone which has been preamplified up to line level (See RDL STM‑1, STM‑2, STM‑2X, STM‑3, STM‑LDA3 Microphone Preamplifiers). When a page is initiated, the module automatically...

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      Item #: ST-VP2

      Availability: More on the way, usually ships in 3-10 business days

      Our Price: $160.11

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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: $25.15

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    • RDL ST-MX3 3 Channel Audio Mixer - Line Input and Output

      RDL ST-MX3 3 Channel Audio Mixer - Line Input and Output

      The ST-MX3 is a line-level mixer module in the STICK-ON Series of products. It provides audio mixing of three line-level inputs with individual input gain adjustments. The line-level output is capable of driving either high or low impedance, balanced or unbalanced loads. The ST-MX3 operates from floating or bipolar DC power. For installations with microphone level inputs, use the ST-UMX3 Universal Audio Mixer. PLEASE NOTE: Required power supply sold separately. Features:...

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      Item #: ST-MX3

      Availability: More on the way, usually ships in 3-10 business days

      Our Price: $127.39

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    • RDL STM-1 Microphone Preamplifier - 50 dB Gain

      RDL STM-1 Microphone Preamplifier - 50 dB Gain

      The RDL STM-1 is a low-cost quality microphone preamplifier designed for use in commercial sound and broadcast applications. The compact size makes it ideal where a larger or heavier preamp cannot be used. The high-performance circuit provides a fixed 50 dB gain to bring any mic-level signal up to the line-level range of nearly any line input. The STM-1 supply input is single ended and operates from 24 to 33 Vdc. Operation from 12 Vdc is possible with a 6 dB reduction in headroom. For intercom applications,...

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      Item #: STM-1

      Availability: In Stock

      Our Price: $106.03

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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 terminal...

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      Item #: ST-SSR1

      Availability: In Stock

      Our Price: $108.10

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    • Radio Design Labs FP-MR2 Message Repeater

      Radio Design Labs FP-MR2 Message Repeater

      The FP-MR2 is a message repeater that permits electronic storage of a single recording up to one minute forty seconds in duration. This message may be played back manually using an external contact closure to ground or using the front-panel START button. The message may also be played back periodically using the interval timer included in the FP-MR2. A balanced line-level music input allows background music to be connected and the associated input potentiometer allows the installer to set the music...

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      Item #: RDL-FP-MR2

      Availability: In Stock

      Our Price: $296.90

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    • RDL DB-SH1 Stereo Headphone Amplifier - Decora panel with user level control

      RDL DB-SH1 Stereo Headphone Amplifier - Decora panel with user level control

      The DB-SH1 is used in applications requiring headphones of any impedance to be driven from consumer or professional audio sources. The DB-SH1 is ideally suited to applications as diverse as language translation, museums, interview studios and music stores. The module mounts conveniently in a precut opening in a wood or metal enclosure or in various RDL mounting accessories. The DB-SH1 is a dual channel headphone amplifier with balanced/unbalanced left and right inputs. Each input accepts operating...

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      Item #: RDL-DB-SH1

      Availability: More on the way, usually ships in 3-10 business days

      Our Price: $149.00

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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: More on the way, usually ships in 3-10 business days

      Our Price: $179.86

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    • RDL EZ-VDA2B 1x2 NTSC/PAL Video Distribution Amplifier on BNC

      RDL EZ-VDA2B 1x2 NTSC/PAL Video Distribution Amplifier on BNC

      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-VDA2B

      Availability: More on the way, usually ships in 3-10 business days

      Our Price: $97.23

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    • RDL SF-BNC2 Bidirectional Unbalanced Stereo Audio Network Interface

      RDL SF-BNC2 Bidirectional Unbalanced Stereo Audio Network Interface

      The SF-BNC2 is a bidirectional Dante audio network interface. It features two unbalanced audio inputs (left and right) on RCA or stereo 3.5 mm Mini-jack connectors, as well as two unbalanced audio outputs (left and right) on RCA and stereo 3.5 mm Mini-jack connectors. Special software is not required to configure the SF-BNC2. Each input provides a network digital audio level of -20 dBFS for an unbalanced -10 dBV input. Each output provides -10 dBV unbalanced for a network digital...

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      Item #: RDL-SF-BNC2

      Availability: More on the way, usually ships in 3-10 business days

      Our Price: $465.00

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    • RDL TX-LM2 Line Level to Microphone Level Transformer

      RDL TX-LM2 Line Level to Microphone Level Transformer

      RDL TX-LM2 is a line level to microphone level transformer. Matches a balanced 600Ω phone or other audio line into a mic or line input. Features: Matches balanced 600 Ohm phone (or other line) into mic or line input Balanced Input Dual outputs:Unbalanced line-level and balanced mic-level Frequency response: 20 Hz to 20 kHz (+/- 0.5 dB) THD: < 0.05% (1 kHz)

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      Item #: TX-LM2

      Availability: In Stock

      Our Price: $37.94

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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: In Stock

      Our Price: $267.23

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    • RDL TX-1W Music on Hold Amplifier - 1 Watt

      RDL TX-1W Music on Hold Amplifier - 1 Watt

      The TX-1W is the ideal choice in on-site installations where the central telephone switching unit needs to be fed with music, voice or combined music/voice signals. There is a wide variety of telephone instruments in use. When a caller is placed on hold, the audio quality perceived is affected by the caller's own telephone, as well as the telephone lines, central switch and on-site equipment. Due to these variations, conventional audio amplifiers used as music-on-hold drivers frequently produce...

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      Item #: TX-1W

      Availability: More on the way, usually ships in 3-10 business days

      Our Price: $71.24

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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...

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      Item #: TX-J2

      Availability: In Stock

      Our Price: $59.79

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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: More on the way, usually ships in 3-10 business days

      Our Price: $768.00

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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...

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      Item #: RDL-RU-ADA4D

      Availability: In Stock

      Our Price: $241.49

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    • RDL TX-AFC1F Balanced to Unbalanced Audio Transformer - XLR / RCA

      RDL TX-AFC1F Balanced to Unbalanced Audio Transformer - XLR / RCA

      The Radio Design Labs TX-AFC1F is a studio quality balanced to unbalanced audio transformer. It takes an XLR input and transforms it to RCA by means of a studio quality bifilar audio transformer. Conveniently mounts almost anywhere because of its compact housing. The TX-AFC1F is a single-channel (mono) module featuring a female XLR input and phono jack output. A studio quality audio transformer converts the audio input to unbalanced. An integral pad is set to produce an output level of -10 dBV...

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      Item #: TX-AFC1F

      Availability: In Stock

      Our Price: $96.19

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    • RDL D-XLR2F Dual XLR 3-pin Female Jacks on Decora Wall Plate with Terminal Block connections on rear

      RDL D-XLR2F Dual XLR 3-pin Female Jacks on Decora Wall Plate with Terminal Block connections on rear

      Dual XLR 3-pin Female Jacks on Decora Wall Plate with Terminal Block connections on rear. Features: Specifications:

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      Item #: D-XLR2F

      Availability: In Stock

      Our Price: $22.50

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    • RDL DD-BTN44 Wall-Mounted Bi-Directional Line-Level and Bluetooth Audio Dante Interface (White)

      RDL DD-BTN44 Wall-Mounted Bi-Directional Line-Level and Bluetooth Audio Dante Interface (White)

      The RDL D SERIES-BTN44 modules (DD-BTN44) are Dante networked, wall-mounted audio interfaces that include bidirectional Bluetooth audio, unbalanced analog stereo or mono audio inputs and outputs, and a balanced or unbalanced line-level output. Stereo audio from a compatible Bluetooth-enabled device feeds two Dante network audio channels. Stereo audio connected to a front-panel Mini-Jack or L and R RCA jacks feeds two other Dante network audio channels. Stereo audio is available to users...

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      Item #: RDL-DD-BTN44

      Availability: In Stock

      Our Price: $685.00

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    • RDL ST-MPA24 Dual Microphone Phantom Adapter - 24 V Adjustable

      RDL ST-MPA24 Dual Microphone Phantom Adapter - 24 V Adjustable

      The ST-MPA24 contains two identical phantom power circuits and a common power supply input. If only one mic input is to be converted for phantom operation, only one circuit needs to be used. Each circuit has a mic input and a mic output. Phantom voltage appears on each of the mic input terminals. There is no voltage on the mic output terminals. Therefore, the ST-MPA24 can convert any existing mic input into a phantom powered input.Module operation is from a 24 Vdc ground referenced power supply....

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      Item #: RDL-ST-MPA24

      Availability: More on the way, usually ships in 3-10 business days

      Our Price: $92.51

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    • RDL SF-ND2 Two Dante Network Audio Channels to Stereo Digital Audio Output Interface

      RDL SF-ND2 Two Dante Network Audio Channels to Stereo Digital Audio Output Interface

      The RDL SF-ND2 is a digital audio interface that converts two Dante network audio channels to a stereo digital audio output. The output is switch-selectable to provide an AES/EBU on XLR, or coaxial and optical S/PDIF. The switch enables the appropriate output jack and any required electrical and data format conversion. Special software is not required to configure the module. The SF-ND2 is a professional grade product for studio quality performance. The SF-ND2 is PoE powered....

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      Item #: RDL-SF-ND2

      Availability: More on the way, usually ships in 3-10 business days

      Our Price: $323.00

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    • RDL RU-VA2 Dual Adjustable Video Attenuator - BNC

      RDL RU-VA2 Dual Adjustable Video Attenuator - BNC

      The RU-VA2 is the optimum choice where connectorized, rack-mounted video attenuation is needed. This unit features two separate, passive isolated channels. A single input jack is provided for each attenuator. The output jack is intended to be connected to a 75 Ohm terminated load. A front-panel knob is provided to adjust hot video levels down to the normal 1 volt p-p signal level. A single attenuator is capable of adjusting down the video level to half the incoming signal level. In situations...

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      Item #: RU-VA2

      Availability: More on the way, usually ships in 3-10 business days

      Our Price: $157.55

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    • RDL RU-VCA2A Digitally Controlled 2 Channel Audio Attenuator

      RDL RU-VCA2A Digitally Controlled 2 Channel Audio Attenuator

      The RU-VCA2A by RDL is a full-featured studio-quality dual-channel audio attenuator module for local and/or remote control of balanced or unbalanced line-level sources. Each module can be remote controlled from a single or multiple locations. Rear-panel terminals provide flexible control options using a variety of RDL remote controls or OEM equipment. Audio levels are controlled in 0.5 dB steps using noiseless zero-crossing digital attenuators for optimum reliability, precise...

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      Item #: RDL-RU-VCA2A

      Availability: More on the way, usually ships in 3-10 business days

      Our Price: $316.00

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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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