I have an Art Audio Quintet for sale it's the triode mode Mk 1 facelift version 20 watts per channel. I've been using it for many years and it's a great amp.  I now have the two new Art Audio monoblocs two MF P 140s and two Yamaha studio power amps plus some active speakers, so much as I would like to keep this, I'm out of space. This came back to me from Tom Willis a couple of months ago, but has only been used twice as I have the Monos.  It's been serviced and completely re-valved.  I'm going to put it on eBay starting at £800.00 but I will do it for TAS Members for £750 cash on collection.