Speakers:
Sound Lab A-1 PX Bass Focus (90 degrees)
Sound Lab A-3 PX (120 degrees)
Amplifiers:
Audio Research VT-150 SE mono 130w (GE 6550 output, Telefunken E88CC input)
Audio Research Reference 160M MKII mono 150w (KT-150 output, 6H30 input)
Audio Research Reference 150SE stereo 150w (KT-150 output, 6H30 input)
All three of these amplifiers systems sound exceptional driving both pairs of the Sound Lab speakers and I find the 16 ohm and the 8 ohm outputs provide a somewhat different balance and dynamic…both output taps sound excellent.