If you want a DIY style 300B amp already built, I have two suggestions. Dennis Had and Young Ahn build great 300B amps with point-to-point component wiring methods. Here are the links for each:
If you can solder, I would suggest looking at an Elekit 300B amp like the TU-8600 300B Tube Amplifier Kit. The exciting bonus of this amp is that you get a 300B headphone amp in the bargain. The Standard Version is about $1300 and Lundahl output transformer Version is about $2000. Visit this website: ELEKIT TU-8600 (vkmusic.ca). Victor is a great guy and can help you get started. I think tubes are extra but Victor can help with bundle prices. Careful, slinging solder is lots of fun...
If you want a DIY style 300B amp already built, I have two suggestions. Dennis Had and Young Ahn build great 300B amps with point-to-point component wiring methods. Here are the links for each:
STEREO TUBE AMPLIFIER INSPIRE by DENNIS HAD CLASS A 300B SINGLE ENDED AMPLIFIER | eBay
300B SE + 6SN7 pre tube amplifier sound test Sorrento Italian sing along, model B-4i FLUXION audio - YouTube
Both build to suit their buyers; you may have to wait a few months for them to order parts and build the amps.
If you can solder, I would suggest looking at an Elekit 300B amp like the TU-8600 300B Tube Amplifier Kit. The exciting bonus of this amp is that you get a 300B headphone amp in the bargain. The Standard Version is about $1300 and Lundahl output transformer Version is about $2000. Visit this website: ELEKIT TU-8600 (vkmusic.ca). Victor is a great guy and can help you get started. I think tubes are extra but Victor can help with bundle prices. Careful, slinging solder is lots of fun...