Newbie poster guy here - Due to all your input, feedback and reviews in this forum, Ive decided on the YBA200 coupled with an Avatar 2x10 Neo and exisiting 1x15LF Eminence cabinet. I cant wait for the big brown truck to arrive... Im hoping the rig will be prefect for the small places our trio will be playing, with fat bottom and crispy highs to fill out those guitar leads... After reviewing the 200 schematics, Id like to maybe clarify a couple things Ive read here, and some other observations... (techie section) 1. Yes there are fuses in the amp, but they are on the PCB, I cant find them on the layout diagram but will eventually. Two fuse the main power transformer for +-15V, I cant find where the other 1.5a slow blow is used.... they dont seem user replaceable. 2 There is solid state in this amp, even thought its advertised as all tube - theres a transistor for the tuner out, an op amp for the direct out, and what appears to be 4 transistors that must make up the "auto bias" circuitry for the power tubes. Theres a solid state +-15v supply for the op amps too. 3 The cooling fan is on the same supply at the 6v tube heater circuit supply, interesting, and funny. 4 The -78v bias voltage appears to be set by 2 zener diodes. So if you want to change power tubes that require different bias, theres no pot to twiddle, a diode would have to be replaced or piggybacked. Im not a tube tech but I believe thats whats happening, its pretty simple analog stuff. And, from all the info in the tube posts, Im ordering some of JJ 12ax, at, and ay7s to experiment with. Thanks guys, if this gives me the sound I think it will, in a smaller footprint and lighter to boot, I owe you all one.