Rare Quad 405 Mk II mono block power amplifier. This will deliver 200 watts rms  into 8 ohms flawlessly. PAT tested and service this year by Retrophonics of Coventry this amplifier will provide excellent service for years to come. This was originally part of a 405 system as pictured and is being sold separately. I have a second mono block and tuner available,equally in good condition (not listed) The pre amp 44 (listed) .  All with original boxes.