I think the 2270 is overrated. Never been a big fan of it. It's also one of the worst units to power current hungry speakers with due to it's inadequate power supply. Aside from that, it's topology is quirky and prone to drift. Unless you've heard one that was completely recapped and dialed in properly, you probably have no idea what one should sound like.
I much prefer the 1976 to 78 units that reflect a more evolved understanding of transistors in audio gear. Great sound can be had from many of those once restored.
I much prefer the 1976 to 78 units that reflect a more evolved understanding of transistors in audio gear. Great sound can be had from many of those once restored.

