Interesting you mention the speaker. I have read that in reviews many times. But I actually thought the stock Celestion sounded pretty good! But being the "tweaker" I am, I upgraded to a WGS Invader 50 4 ohm speaker. I'm very happy with the results, and you can read more about it in this thread.Cool! I have an AVT150 (it’s my dad’s, I’m storing it at my place). And the first ever amp I purchased for a band was an older Valvestate, so I have a soft spot in my heart for them.
Biggest issue is the speaker. I think the ones that come stock aren’t the best. Couple times I’ve run it through Vintage 30s and it was a huge improvement.
But yeah, those amps can sound good, I especially had good success in cranking the gain on the clean channel and using boosts with that. Much more open and less compressed that way.
Here you go!
In the first, I took it with a grain of salt since Johan could plug into a toaster and make it sound good.
This guy plays thru some different styles, both clean and dirty. Playing starts at about 5 minutes in.