I’m sorry you never received a reply to this post. Had I seen it last year I would’ve replied because that’s when I purchased the Audio Nirvana 300 B amplifier. I’ve owned a number of audio amplifiers over the years many have been big names, some were kits, some were tube amps and some were class A mosfet amps. The AN 300B is part of my current listening room system which consists of a Kuzma turntable and tonearm combo with a Lyre cartridge, as Pass DIY Pearl Two phono stage, and a pair of DIY Cornscala 3 way Speakers. The point of the build up is to say, WOW! This is hands down the sweetest stereo amplifier I’ve heard, period. Audio Nirvana is an appropriate name and is the feeling I get when listening. Truly remarkable. I did use a different tube compliment than what comes with, as I installed KRAudio 300B balloons, and swapped out the rectifier and 6SN7 and 6SL7. I’m not sure the tube swapping was necessary but I had them on had from my other 300B amplifiers. If you are still considering a 300B SET, this is a choice you won’t regret. The price for the build and sound quality is ridiculously low. Also of importance, David Dicks, of Common Sense Audio, is a very helpful guy and a pleasure to chat with.