Preamps, Distribution, Line Amps

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 unba ...

The EZ-MPA1 is a microphone preamplifier with front-panel volume control and audio level metering. A front-panel switch engages an audio compressor to control overloads and clipping during high level audio bursts or peaks from the micropho ...

Radio Design Labs RU-ADA8D Features: Stereo Audio Distribution with 8 Outputs Mono Audio Distribution with 16 Outputs Front-Panel Input Level Trimmers Dual-LED VU Meter for Each Input Channel Front-Panel Output Level Trimmers Inputs and Ou ...

The EZ-ADA4 is a stereo audio distribution amplifier with gain adjustment and audio level metering. The input is connected through RCA jacks or a 3.5mm mini-jack. A front-panel knob adjusts for high or low input levels using the left and r ...

The STM-1 Microphone Preamp is part of the group of STICK-ON products from Radio Design Labs. The STM-1 is a quality microphone preamplifier designed for use in commercial sound, broadcast, and recording applications. Its compact size make ...

Radio Design Labs' 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 off to +65 dB, two balanced or unbalanced outputs ...

Radio Design Labs' RU-ADA4D is a 4-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 ...

Radio Design Labs' 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, ...

Radio Design Labs' 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 co ...

Radio Design Labs' STA-1M allows bridging any audio line, adjusting the gain, and driving a balanced or unbalanced line. The circuit design allows the input to accept either balanced or unbalanced signals, of either high or low impedance. ...

Radio Design Labs' 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 balanc ...

The TX-A2D from Radio Design Labs 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 com ...

Radio Design Labs' TX-8A is a great choice in many applications requiring superior quality transformer coupling between the output of a 4 or 8 Ohm power amplifier and the input of an audio mixer or amplifier. A front-panel LEVEL control al ...

Radio Design Labs' STA-1 is a dual-channel line amplifier with bridging inputs, adjustable gain or loss, and low impedance outputs. Each of the two identical circuits are both an electronic line transformer and a line amplifier. Hook up th ...

Radio Design Labs' TX-LC2 is part of the group of versatile TX series products from Radio Design Labs. The TX series feature the advanced circuitry for which RDL products are known, combined with durable, quality connectors. The ultra-comp ...

Radio Design Labs' TX-AFC1M Features: Studio Quality Bifilar Audio Transformer Connectorized Audio Format Conversion Galvanic Isolation with the Convenience of RDL TXs Gold Contacts on Input and Output Unbalanced to Balanced Conversion Uni ...

Radio Design Labs' 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 ...

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 ...

Radio Design Labs' STM-3 is part of the group of "STICK-ON" products from Radio Design Labs. The STM-3 is a quality microphone preamplifier designed for use in commercial sound, broadcast, and recording applications. Its compact size makes ...

The SF-TPRS12A chasis transmits and receives up to 12 channels of RDL Format-A analog audio over standard twisted pair CATx cable for distribution across your facility. Four three-pair send sections accommodate 12 balanced or unbalanced in ...

Radio Design Labs' 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 balanc ...

The EZ-MPA2 is a stereo microphone preamplifier with front-panel volume controls and audio level metering. A front-panel switch engages audio compressors to control overloads and clipping during high level audio bursts or peaks from the mi ...

Radio Design Labs' STA-2A is a dual-channel, line-level audio preamplifier. Each channel is identical. The audio inputs are bridged at 20kW and accept either an unbalanced or a balanced audio signal. Gain is adjustable from unity gain to + ...

Radio Design Labs' TX-10B Features: Used to add transformer isolation to any line-level RDL product input Frequency response: 20 Hz to 20 kHz (+/- 0.5 dB) THD: < 0.05% (1 kHz) 10 kO input bridges any audio line Balanced input and output ...