I have owned Van Alstine equipment for 30 t years. Currently have Insight 440 Amp, Insight Preamp and DAC. Also use an older FET Vavle Pat 5 pre-amp in a different system. The stuff sounds great. The pieces are rugged as the mountains. Frank Alstine is always willing to answer questions and suffers this fool with patience. You should also be aware that upgrades are available and seems reasonably priced. Can't recommend highly enough.
