1:34:17

Quad 405-2 Amplifier Repair and Refurbish - Step by Step

15:55

When Good Amplifiers Go Bad! Quad 405-2 Blown Channel

14:09

Technics Amp repair with NO PARTS!

30:10

Quad 405-2 Power Amplifier (with clone boards): Vintage Audio Review Episode #121

14:40

Another Quad 405 clone board to build & test.

56:38

QUAD - The Crème de la Crème of Audio - Can I FIX it?

14:38

A Neglected Stereo Icon! NAD 3020 Series 20 Overhaul - Retfurb Retro Audio

12:33

Unboxing A Restored Original Quad 405 Power Amplifier