Radio Design Labs RU-ADA4D Audio Distribution Amplifier
Condition: Good
Open Box — New, unused gear. Original packaging has been opened, but the item has never been used.
Like New — Lightly used gear that appears brand new, with no visible signs of wear.
Very Good — Used gear with minimal cosmetic wear. Fully functional and well cared for.
Good — Fully functional gear with noticeable cosmetic wear from normal use.
Fair — Functional gear with significant cosmetic wear, such as major scratches or missing non-essential parts.
For Parts Only — Non-functional gear sold as-is. Suitable only for parts or repair; not operational.
Radio Design Labs RU-ADA4D Audio Distribution Amplifier
Details
At A Glance
The Radio Design Labs RU‑ADA4D Audio Distribution Amplifier is a four channel stereo audio distribution amplifier. It offers 2 stereo inputs (A/left & B/right) with front-panel gain controls (-5 to +15 dB for balanced input), dual-LED VU meters for precise level monitoring, and can be switched to mono mode to feed one source to 8 outputs instead of 4 stereo pairs. Each of its 4 stereo (or 8 mono) outputs has its own screwdriver-adjustable gain (‑9 to +6 dB balanced), and all connections are made via rear detachable terminal blocks—ideal for neat rack or DIN installations.
With a wide frequency response (10 Hz–165 kHz ±0.25 dB), ultra-low noise (–92 dB), minimal distortion (<0.0025% THD+N), over 20 dB of headroom, exceptional crosstalk isolation, and >90 dB common-mode rejection, it delivers outstanding audio clarity for critical professional environments. Powered via 24 V DC (rear-panel), it’s perfect for high-density install racks, broadcast systems, houses of worship, or commercial audio setups.
Description
Features
Specifications
What's Included
The Radio Design Labs RU‑ADA4D Audio Distribution Amplifier is a four channel stereo audio distribution amplifier. It offers 2 stereo inputs (A/left & B/right) with front-panel gain controls (-5 to +15 dB for balanced input), dual-LED VU meters for precise level monitoring, and can be switched to mono mode to feed one source to 8 outputs instead of 4 stereo pairs. Each of its 4 stereo (or 8 mono) outputs has its own screwdriver-adjustable gain (‑9 to +6 dB balanced), and all connections are made via rear detachable terminal blocks—ideal for neat rack or DIN installations.
With a wide frequency response (10 Hz–165 kHz ±0.25 dB), ultra-low noise (–92 dB), minimal distortion (<0.0025% THD+N), over 20 dB of headroom, exceptional crosstalk isolation, and >90 dB common-mode rejection, it delivers outstanding audio clarity for critical professional environments. Powered via 24 V DC (rear-panel), it’s perfect for high-density install racks, broadcast systems, houses of worship, or commercial audio setups.