I was going to build solid-state amplifiers but have gone to the dark side and want to build tube amplifiers instead.
2- 8610 AR
2- 8620 AR
7-EL2044CN unity gain buffer
An ST Sample Kit for Test and Design of Rail to Rail Op Amps with 34 different types of op amps in mixed packages.
4 each- 1N5822 Diodes
Some other lesser-known models of op amps
$50 shipped. I take PayPal and can be emailed thru the boards.