How about this botique 4-watt monster at $289?
http://www.youtube.com/watch?v=Oc89qquzEp4Is this claim valid?
"PIC WILL UPDATED! UNIT shown is very similar.
WILL FIT IN THE EPIPHONE VALVE JR (head or combo) or BUILD YOUR OWN CABINET FOR IT!
Think 1978/79 EVH. Or perhaps Round and Round by Ratt. Or even Appetite for Destruction.
This is designed as a drop in replacement for the *really* substandard stock Epiphone Valve Junior. Just remove the back plate, remove the 4 screws from the top, slide the stock one out, slide this new one in, and voila, you have yourself a wolf in sheep's clothing. This is an entire amplier head, and nothing from the stock Valve Jr is reused apart from the case. OR, if you are good at woodworking, make yourself and dandy little head cabinet for it out of a solid wood. I can give you some dimensions.
This is not your typical guitar amp. It is a high-gain 3 watt guitar amp with a PP pair of 6AQ5 output tube. I have built a ton of high gain circuits recently and this is the latest. Truly world class high gain sound. If you are into the Soldano's, Mesa's, Bogners, hot-rodded Marshalls, JCM900/2204, High Octanes, even Dumble overdrives of the world then this is absolutely in their league, and IMO, this elegant, simple, tested amplifier would not be out-done by ANYONE. I spent an eternity tweaking the balance of this circuit, both the tonal balance and distortion balance. I started with a Soldano slo100 circuit, then a Bad Cat X-treme Tone, then a Bogner XTC circuit, then a Roccaforte HG100, then going back an tweaking cathode resistors, and coupling cap corner frequencies. So the preamp circuit could be considered a cross between the HG100 and the Bogner XTC. The sound is a cut above the 5150's buzziness. I am also very familiar with the Orange Tiny Terror and I would take this amp over the TT - mind you I really like the Orange but it just lacks a little grunt in comparison. Please email me if you need any more info Thanks for looking. Shipping is $23.99 for US48 and Canada. "