I have a 2.5 that had a tube go bad. The tube took out the power supply that fried the board. It took VTL three weeks to just make the diagnosis. They said they had never seen that problem before but if this is a design that is common to the 5.5, I would be hesitant to purchase VTL. They will fix this problem for about $800 and wil NOT warranty their work. They were not helpful. So, if you want a mint, rebuilt 2.5, you could get mine out of hock for the cost of $900, which would cover the repairs, shipping, remote, original box, and good luck! P.S. I had a ST-85 amp that didn't go bad in a year, but it was sold and replaced with SS. And yes, the 2.5 had that warm, tube sound but that combo lacked bass control and clear highs. Great mids though!