I have Q5’S, for about 4yrs powered by sia-025. Never wanted for power. Sound great. Until recently used the sia-025 as preamp and amp. Now, just as a power amplifier. I now use my MSB reference as dac and preamp. I believe the sia-025 (until maybe now) is the best integrated amp there is. For me the issue with the new sia-030 is it‘s size. Huge! If it were just an amp you could put on the floor. As a preamp, that doesn’t work for me. I am certain it sounds great though. Hope this helps.