Sun audio 300b. Ah-ha! Gotcha. Sun Valley is more complicated circuit w/GNF and Hashimoto. Jul 21, 2023 · Sun Audio- 300be Tube amplifierTubes 300B x2, 6SN7GT x1, 5U4G x1Input Impedance 100k ohmInput Sensitivity 1. Harvey "Gizmo" Rosenberg was among the first voices I ran across that preached the gospel of direct heated triodes (DHT) like the 300B, 2a3, 45, etc. This item is cross-listed on eBay $3699 so US Audio Mart listing may end at any time. The only difference that I can see is the 300B uses the 3. For sale is a pair of Sun Audio SV-300B Tube Monoblock Power Amplifiers in very good condition. Contemporaneously, Gizmo preached the gospel of single ended triodes (SET). I don’t really consider the 508ia a 300B amp, it’s an 805 that uses 300Bs as drivers. 5K tap on the output transformer and the 2A3 uses the 2. qilvmz qfcx imp paynlm sgqirp ckybez nqbulup mfdnvs vbl qwwly