I picked this ST-70 up with a load of other gear. The large caps have been replaced and was fully checked out and serviced. I currently have it paired with some Dynaco A25’s that I recapped and freshened up. I’ve had a lot of fun listening to this set up, the lowend is plenty strong, while the A25’s don’t go all the way to 20khz they sound great with the ST-70. I’ve so far just used my phone with a line level matching transformer.