Economy Mullard 3-3 stereo amp.

[Aerodyne]

I took a look at your video, Trevor, and it is impressive. The bass has that lovely rounded quality that is hard to find on other amplifiers. Truly a great design, the 3-3 and no matter how you build it, whatever component changes you make - within reason, of course - the amp always sounds great.
Thanks for going to the trouble of creating the video. Hopefully, others will see it and become 3-3 converts!
Tony