Lemme start a thread ... I know what a 450 watt stereo and 2 1K watt amps bridged mono does along with the SDA interconnect .... btdt... love them both ways.
On the larger two pairs... at various times... 4 Carvers.
My oldest SDA 1A pair sound awesome with 200 watts stereo... a 50 lb Sony ES for decades.
Not trying to re-invent the wheel... btdt.. just fixin some blow outs