LB
WOW Barry. Speaking from experience, that's an awesome piece of kit you have there. I can't see why you would want to swap for a Studio Preamp or a V-twin. I mean the 'Quad' knocks the balls off both those babies anyday. It even blows the Triaxis away in my opinion. I mean at least it has knobs on it. Try twiddling with a Triaxis halfway through your live set (forget it!). Quads were around 1500 sobs back in 90/91. I mean 4 channels man. Nowadays that kinda boutique stuff will cost you well over ?2000 for a fancy switching combo or head like a VHT, Bogner or a Soldano etc.