Stay away from Vtl. I was the second owner of a Stereo 50/50 . When It was built they offered a "lifetime transferrable warranty"The first time the amp failed ( a popping noise) not only would they not honor their warranty but it cost $250 for new input caps.The second time it was a resistor that I replaced.Finally the right ouutput transformer failed. They wanted to charge me $400 for matched transformers.The irony is that the first time it failed I was auditioning a vtl 2.5 pre and St 85 amp. I would have bought them both if they had taken care of me.I bought a McIntosh pre and power instead. It was the best decision I've made in a long time. As for the Stereo 50,I sold it for parts/repair on ebay. VTL lost a customer for life!