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Radio Design Labs

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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 HR-DSX4 Digital Audio Selector - 4x1

            RDL HR-DSX4 Digital Audio Selector - 4x1

            The RDL HR-DSX4 is the ideal choice in installations requiring high quality source selection between digital audio signals. Solid-state switching is used to select one of four inputs. Each input may be fed through one of three jacks: S/PDIF optical, S/PDIF (or AES-3ID) coaxial or AES/EBU. The output is switch-selectable to provide an AES/EBU, S/PDIF coaxial, S/PDIF optical or AES-3ID output. The switch enables the appropriate output jack and any required electrical and data format conversion. Th

                 

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                Item #: HR-DSX4

                Availability: Usually ships in 3-10 business days

                Our Price: $643.49

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              • RDL RU-LB2 Line-Level Bi-Directional Network Interface

                RDL RU-LB2 Line-Level Bi-Directional Network Interface

                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-LB2

                    Availability: Usually ships in 3-10 business days

                    Our Price: $419.20

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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: $27.99

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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 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: Usually ships in 3-10 business days

                            Our Price: $178.95

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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: In Stock

                                Our Price: $57.49

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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 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 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 operati



                                       

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                                      Item #: RDL-DB-SH1

                                      Availability: Usually ships in 3-10 business days

                                      Our Price: $156.60

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                                    • RDL TX-TPR6A Passive Single-Pair Receiver - Twisted Pair Format-A - Balanced audio line output

                                      RDL TX-TPR6A Passive Single-Pair Receiver - Twisted Pair Format-A - Balanced audio line output

                                      The TX-TPR6A is a single-pair audio receiving module compatible with RDL Format-A twisted pair products. A front-panel switch set during installation determines which of the three FORMAT-A pairs feeds the module output. The audio signal received from the selected pair of the RJ45 INPUT jack feeds the -10 dBV unbalanced RCA phono jack output and the +4 dBu balanced detachable terminal block output. A bridging transformer provides isolation between the twisted pair cable and the audio output.The

                                           

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                                          Item #: RDL-TX-TPR6A

                                          Availability: Usually ships in 3-10 business days

                                          Our Price: $75.80

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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: Usually ships in 3-10 business days

                                          Our Price: $74.49

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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: Usually ships in 3-10 business days

                                            Our Price: $94.49

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                                          • RDL HR-DAC1 Digital to Analog Converter - 24 bit 192 kHz

                                            RDL HR-DAC1 Digital to Analog Converter - 24 bit 192 kHz

                                            The HR-DAC1 is the ideal choice in installations requiring high quality analog audio from an AES/EBU, AES-3ID or S/PDIF digital audio source. The HR-DAC1 automatically detects a valid input on any of the four input jacks: S/PDIF optical, S/PDIF coaxial, AES-3ID or AES/EBU. The AES/EBU input is 110 Ohm terminated; the S/PDIF coaxial and AES-3ID jacks are 75 Ohm terminated. A front-panel LOCK LED indicates the presence of a valid digital audio source without any phase-lock or bit errors. Sample ra

                                               

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                                              Item #: HR-DAC1

                                              Availability: Usually ships in 3-10 business days

                                              Our Price: $465.49

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                                            • RDL PS-24V2 Universal Switching Power Supply

                                              RDL PS-24V2 Universal Switching Power Supply

                                              • Input: 100 to 240 VAC.
                                              • Output: 24 Vdc, 2 A (UL, CSA).
                                              • Dimensions: 2 in. (5 cm) x 1.33 in. (3.4 cm) x 4.75in. (12 cm), nominal.
                                              • Efficiency: ENERGY STAR Level IV.

                                               

                                              2 Types Available

                                              Item #: PS-24V2

                                              Availability: Usually ships in 3-10 business days

                                              Our Price: $64.49

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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 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: Usually ships in 3-10 business days

                                                  Our Price: $171.49

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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 TX-A2D Dual Audio Converter - Balanced to Unbalanced

                                                  RDL TX-A2D Dual Audio Converter - Balanced to Unbalanced

                                                  The TX-A2D is the ideal choice in installations requiring passive isolation and level attenuation between a professional balanced line-level stereo source and consumer equipment unbalanced inputs.

                                                  The TX-A2D is a complete unbalanced stereo line-level audio output module. The front panel provides a detachable terminal block for connecting each channel of a balanced +4 dBu audio source. The input signals are coupled to two front-panel gold plated phono jacks through studio-quality isolation transfo

                                                     

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                                                    Item #: RDL-TX-A2D

                                                    Availability: In Stock

                                                    Our Price: $103.49

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                                                  • RDL RU-NL2P Network to Line Level Interface - PoE

                                                    RDL RU-NL2P Network to Line Level Interface - PoE

                                                    The RU-NL2 modules are Dante audio network interface products compatible with line-level audio equipment inputs. 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-NL2 is a high quality converter that provides professional line-level outputs from two Dante network audio channels. Each output provides +4 dBu balanced for a network digital audio level of -18 dBFS. The profes

                                                         

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                                                        Item #: RDL-RU-NL2P

                                                        Availability: Usually ships in 3-10 business days

                                                        Our Price: $395.50

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                                                      • RDL TX-PCR1 Paging Controlled Relay

                                                        RDL TX-PCR1 Paging Controlled Relay

                                                        The TX-PCR1 is the ideal choice in many applications where switching needs to be controlled from a constant-voltage amplified audio source. The module will trigger on any program material, with paging sources being the most common. The TX-PCR1 includes both an open-collector SLAVE output to control other modules or equipment and a DPDT high power switching relay suited to switching speaker loads.

                                                        The amplified audio source is connected using a detachable terminal block. A front-panel switch is pr

                                                           

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                                                          Item #: RDL-TXPCR1

                                                          Availability: Usually ships in 3-10 business days

                                                          Our Price: $130.95

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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: Usually ships in 3-10 business days

                                                          Our Price: $256.49

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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 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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                                                                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.