My 4B SST clipped after playing for a half an hour at volumes of 95+dB on Aerial 7B (4 ohm minimum) and Von Schweikert VR4 Gen III HSE (3.5 ohm minimum).
If you listen at more normal volumes...mid to high 80 dBs, then you'll probably be OK.
If you listen at more normal volumes...mid to high 80 dBs, then you'll probably be OK.

