Thanks Jerry ! I love this thing, definitely the last stop on the amplifier merry go round for me. Only "con" if there is one is that I'm married to high efficiency speakers for life. I doubt I'm using a watt with most listening so the "first watt" school of thought is really at play here.
Matt and I discussed a preamp early into this build. About a month after i got the amp he reached out saying he was moving forward with the project and I said I'm in.