Radio Design Labs (RDL)

The RDL 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 ST‑NG1 is the ideal choice where random white or pink noise is needed. It is suitable either as a reference noise source for audio measurements or as a masking noise source in engineered sound or counter‑intelligence applications.

The ST-UMX3 is a three-channel audio mixer for combining mic-level or line-level signals to a single output.

The RDL STM-DA3 is designed for use in quality commercial sound, broadcast and recording applications and accepts a wide variety of microphone input levels without loading professional low impedance microphones.

The RDL 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 RDL FP-PA20B produces average audio levels and audio clarity normally expected of amplifiers delivering much higher output power.

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.

The RDL D-RC type remote audio mixing controls provide user-accessible volume knobs for two or three sources. Each control is available with level controls only, or with level controls plus a muting button for each channel.

The RDL FP-PA20 produces average audio levels and audio clarity normally expected of amplifiers delivering much higher output power.

Both a 70V and 100V amplified output are provided on the RDL FP-PA20A to drive corresponding speakers in a distributed sound system.

The RDL EZ-MX4L Stereo Line Level Audio Mixer is a stereo audio mixer with four line inputs. All line inputs connect through RCA jacks; one also includes a MINI-jack input. Left and right channel LED VU metering facilitates easy level adjustment.

The TPS3A modules are three pair audio sending modules compatible with RDL Format A twisted pair products. These modules are designed to be mounted in wall boxes, cabinets or other enclosures that allow users to connect audio sources.

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.

The EZ-HK1 is a superior-quality stereo audio transformer isolation module for use with unbalanced, high impedance audio inputs. Input and output connections are provided on gold-plated RCA jacks.

The RDL D Series D-PSP1 is a compact active loudspeaker that delivers rich, detailed sound in a Decora-compatible wall or chassis mounts. The input accepts either a -10 dBV unbalanced or a +4 dBu balanced signal on the rear-panel detachable terminal block.