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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-1 Dual Balanced/Unbalanced Line Amplifier -12 to 20 dB Gain

      RDL STA-1 Dual Balanced/Unbalanced Line Amplifier -12 to 20 dB Gain

      The STA-1 is a dual-channel line-level preamplifier with bridging inputs, adjustable gain or loss, and low-impedance outputs. Each of the two identical circuits is both an electronic line transformer and a line amplifier. Hook up the STA-1 just like a pair of audio transformers with gain. True dc amplifiers produce unsurpassed audio clarity, high common-mode rejection, ultra-low distortion and low noise. The STA-1 is perfect for most line amplification, impedance or balanced/unbalanced conversio

         

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        Item #: STA1

        Availability: In Stock

        Our Price: $144.49

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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 STM-3 High Gain Microphone Preamplifier - 35 to 75 dB Gain

        RDL STM-3 High Gain Microphone Preamplifier - 35 to 75 dB Gain

        The STM-3 is a quality low-noise microphone preamplifier designed for use in surveillance, commercial sound, broadcast, and recording where higher than normal gain is required. The STM-3 is very flexible, with gain adjustment from 45 to 75 dB, two balanced or unbalanced outputs, and available phantom supply input. Its low-distortion and low-noise performance make it the best choice, even when larger preamps could be used. The single-ended supply input range is from 24 to 33 Vdc. Operation from 1

           

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          Item #: STM-3

          Availability: In Stock

          Our Price: $159.55

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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 TX-J2 Unbalanced Input Transformer

            RDL TX-J2 Unbalanced Input Transformer

            • Mix two unbalanced audio signals to mono balanced
            • Combine stereo into mono with balanced output
            • Unbalanced to balanced conversion without gain
            • Hum cancellation on unbalanced line inputs
            • Frequency response 30 Hz to 20 kHz (+/- 1 dB)

             

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            Item #: TX-J2

            Availability: In Stock

            Our Price: $57.49

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          • RDL EZ-MPA2 Stereo Output Dual Microphone Preamplifier

            RDL EZ-MPA2 Stereo Output Dual Microphone Preamplifier

            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-MPA2

                Availability: In Stock

                Our Price: $178.95

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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.

                For installations with microphone level inputs, use the ST-UMX3 Universal Audio Mixer.

                • Mix

                 

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                Item #: ST-MX3

                Availability: In Stock

                Our Price: $122.49

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              • RDL STD-600 Passive Audio Divider/Combiner - 600 Ohm

                RDL STD-600 Passive Audio Divider/Combiner - 600 Ohm

                Each STD module is a resistive branching network with RF filtering on each of the four channels. Any channel, A through D, may be either an input or an output. This permits combining stereo signals into mono inputs, splitting mono signals to multiple inputs, and even combining microphones with output shorting switches into a single amplifier input. The STD modules are available in 150 Ohm, 600 Ohm and 10 k Ohm models. All inputs and outputs are balanced.

                • 600 Ohm Operation
                • Combine Audio Signals to

                 

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                Item #: STD-600

                Availability: In Stock

                Our Price: $54.49

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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 STM-2 Adjustable Gain Microphone Preamplifier - 35 to 65 dB Gain

                  RDL STM-2 Adjustable Gain Microphone Preamplifier - 35 to 65 dB Gain

                  The RDL STM‑2 is a quality low‑noise microphone preamplifier designed for use in commercial sound, broadcast, and recording. The STM‑2 is very flexible, with gain adjustment from 35 to 65 dB, two balanced or unbalanced outputs, and available phantom supply input. Its ultra‑low distortion and low noise performance make it the best choice, even when larger preamps could be used.

                  The STM 2 supply input is single ended and operates from 24 Vdc. Operation from 12 Vdc is possibl

                       

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                      Item #: STM-2

                      Availability: In Stock

                      Our Price: $139.95

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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 FP-UBC2 Unbalanced to Balanced Converter - 2 Channel

                        RDL FP-UBC2 Unbalanced to Balanced Converter - 2 Channel

                        The FP-UBC2 is the ideal choice for connectorized conversion from unbalanced to balanced audio. This module features two identical channels. Gold-plated phono jacks are utilized for each unbalanced input channel. Each output is balanced, connected through an XLR jack. A gain trim potentiometer is provided for each channel.

                        The normal gain setting is indicated for the trimming potentiometer. This setting produces a +4 dBu balanced output for a -10 dBV unbalanced input. The gain is adjustable -5 dB

                           

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                          Item #: FP-UBC2

                          Availability: In Stock

                          Our Price: $171.49

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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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                        • 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 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: In Stock

                                Our Price: $254.95

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                              • RDL RU-MLA2 Dual Microphone / Line Preamplifier

                                RDL RU-MLA2 Dual Microphone / Line Preamplifier

                                The RU-MLA2 is a dual channel audio preamplifier. The inputs and outputs may be connected through the front-panel XLR jacks or on the rear panel detachable terminal blocks. Each input accepts either a balanced microphone or line level signal. Each output 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-MLA2 may be rack-mounted with the XLR jacks facing forward, or may be reverse-mounted using the R







                                 

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                                Item #: RU-MLA2

                                Availability: In Stock

                                Our Price: $256.49

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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 PT-AMG2 Portable Audio Signal Generator & Monitor

                                    RDL PT-AMG2 Portable Audio Signal Generator & Monitor

                                    This portable audio instrument is comprised of a precision audio oscillator, precision level meter and speaker.

                                    The 700 Hz oscillator section features two outputs. The balanced XLR output is front-panel switch selectable for MIC or LINE level (pro level). The unbalanced output operates at -10 dBV (consumer). Output stability is suited to accurate bench top audio testing.

                                    The audio metering circuit features two inputs, an LED meter and a monitor speaker. The balanced input is front-panel switch sel

                                       

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                                      Item #: PT-AMG2

                                      Availability: In Stock

                                      Our Price: $295.95

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                                    • RDL EZ-MX4L 4x1 Stereo Line-Level Audio Mixer

                                      RDL EZ-MX4L 4x1 Stereo Line-Level Audio Mixer

                                      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-MX4L

                                          Availability: In Stock

                                          Our Price: $152.95

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                                        • RDL ST-PA6 6 W Mono Audio Amplifier - 8 Ohm

                                          RDL ST-PA6 6 W Mono Audio Amplifier - 8 Ohm

                                          The ST-PA6 represents the second generation of RDLs breakthrough in the traditional power vs. size ratio. Present technology permits features and performance at the most economical cost ever. The ST-PA6 offers 6 watts of power for a price you would expect to pay for 3 watts.

                                          The ST-PA6 features two balanced audio inputs, a gain control, equalization control and an 8 Ohm output. The output is designed to deliver a clean 6 watts RMS into an 8 Ohm speaker. Each input is a balanced bridge, with the t

                                             

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                                            Item #: ST-PA6

                                            Availability: In Stock

                                            Our Price: $94.49

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                                          • RDL ST-PA18 18 W Mono Audio Amplifier - 8 Ohm

                                            RDL ST-PA18 18 W Mono Audio Amplifier - 8 Ohm

                                            The ST-PA18 features a balanced line level input that may be connected unbalanced. The gain control range will accommodate standard unbalanced levels as well as professional balanced levels. The module bridges the input signal. LOOP OUT terminals permit a balanced input to be fed to additional amplifier modules making the ST-PA18 an ideal component in distributed audio system design. The LOOP OUT may also be used to feed a subwoofer amplifier (see RDL ST-CX2S Subwoofer Filter).

                                            The ST-PA18 output

                                               

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                                              Item #: ST-PA18

                                              Availability: Usually ships in 3-10 business days

                                              Our Price: $121.95

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                                            • RDL EZ-PA20 20 Watt Stereo Audio Power Amplifier

                                              RDL EZ-PA20 20 Watt Stereo Audio Power Amplifier

                                              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-PA20

                                                  Availability: In Stock

                                                  Our Price: $128.49

                                                  Add to Wishlist
                                                • RDL STD-10K Passive Audio Divider/Combiner - 10 k Ohm

                                                  RDL STD-10K Passive Audio Divider/Combiner - 10 k Ohm

                                                  Each STD module is a resistive branching network with RF filtering on each of the four channels. Any channel, A through D, may be either an input or an output. This permits combining stereo signals into mono inputs, splitting mono signals to multiple inputs, and even combining microphones with output shorting switches into a single amplifier input. The STD modules are available in 150 Ohm, 600 Ohm and 10 k Ohm models. All inputs and outputs are balanced.

                                                  • 10 k Ohm Operation
                                                  • Combine Audio Signals to

                                                   

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                                                  Item #: STD-10K

                                                  Availability: In Stock

                                                  Our Price: $54.49

                                                  Add to Wishlist
                                                • RDL EZ-MX4ML 4x1 Mic and Stereo Line Audio Mixer

                                                  RDL EZ-MX4ML 4x1 Mic and Stereo Line Audio Mixer

                                                  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-MX4ML

                                                      Availability: In Stock

                                                      Our Price: $162.49

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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.