Hi Jim;
The 3B SST2 has 40,000 uF of capacitance per channel, or a total of 80,000 per stereo amplifier
The 7B SST2 has 80,000 uF per module, and there are of course 2 modules per channel, for a total of 160,000 per channel, or 320,000 per stereo pair. That's a lot.
cwr