[quote name='bertbass' timestamp='1348764809' post='1817918']
Others may disagree, but in my opinion, valve amps have a sweet spot where the volume is just right for the valves to distort nicely, but not too much, the output transformer to saturate, but not too much and where the speakers distort, but again, not too much and that sound just can't be beaten. Unfortunately, when you have to turn down it all goes and it becomes a bit of a struggle to play because 'the sound' is just not there. I've found that adding a Behringer BD121 before the amp can compensate for the lower volume. It will never be as good as that WOW moment but it can come a close second and at a little over £20, is a cheap alternative to buying a new amp and you still have that sound when you can play loud enough.
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output transformer distortion sounds pretty bad, unless your into synths. Totally don't recomend a power break on a 150watt head either.
Use less speaker or less valves.
You can pull two of the valves out and use it on twice the load