I've had this amp for about a year, It's incredibly inspiring. It's built by a local guy who's amp pop up every know and then around town. I've emailed him with questions to no avail. I've posted these schematics before and had varying responses. Some saying the amp is based off of a 5E3, others a Matchless Spitfire, a Vox AC15, etc.... Can anybody give me some definitative info on this baby. What amp is it based off of?