I had a Bryston 9b and it really did not seem to like lower ohm loads. The speakers I had were rated at 6 ohms and dipped to ~3.4 ohm.
This does not really matter if you don't crank things up. Also the 4b is a larger amp also.
Marty
This does not really matter if you don't crank things up. Also the 4b is a larger amp also.
Marty