@stereo5 You're welcome, and thank you as well. Yes, as I had mentioned above the Super KT88/120 can be outfitted with additional inputs and a volume control and when used with 6SL7 Input tubes, can be driven to full output directly from a source. I can add a set of RCA line level outputs as well to allow driving a powered subwoofer. I'm not sure if you need remote capability for volume as well? If you'd like, please contact me using the Contact Us (through my website) and let me know what options/features you may like and I can try my best to help.
Best regards Aric