Mono Class AB QUAD-405 Power amplifier 80W Base on QUAD405 Power amp With VU Level Meter
Quad (marque) — Wikipédia
Quad stereo (UK) from 1967: Quad 33 Pre-amplifier, Quad FM3 Tuner and quad 303 Amplifier. Got one floating around somewhere. | Instrumentos, Áudio, Som
Quad 22/Quad II (Vintage) | Hi-Fi News
Quad - Vena II Play - Wireless Streaming Integrated Amplifier