Yeah, I'm still on the forum daily. Reading on amps,usb dac. Was trying to find a usb dac with pre-amp + subwoofer pre-outs.
Using sr605, it does have eq,distance,x-over for sub, high pass for fronts, L+R summing for subwoofer,mic calibration,etc
I use bi-amp on the Klipsch, with the front...