Excellent amp with downright horrible speakers and few idiotic design elements.

This amp is an underrated gem of an amp. I was genuinely surprised by the low prices at which they sell in the used market. Even I bought mine used at a surprisingly low price. It's a versatile amp, from old-school Blues to Hard Rock, this amp pulls off all those genres with aplomb. However, its stock Celestion Tube 10 speakers were utter pieces of junk. At low volumes, they sound lifeless, at high volumes, or when you switch to overdrive channel they not only sound muddy but also fart out. So, I replaced them with a quartet of Weber 10F150-T speakers, at first I thought about getting the 10F150 but then decided to go for the 10F150-T because they were bright like the old Jensen speakers. To say that the difference in the tonal quality was phenomenal will be an understatement. These Weber speakers stay clean and tight even at high volumes, they never fart out. If that ain't enough the amp sounds substantially louder, with the new Weber speakers it's even louder than a Fender Twin Reverb. Do note that despite being a channel switching amp it's by no means a modern high gain fire breathing monster. The tone of its overdrive channel can be best described as an old-school hot-rodded Fender Blackface tone. Think of JCM800 levels of gain with Fender Blackface style tone and you'll get the idea. With the stock speakers, it had a bit of a Marshall like tonality, but with the Weber speakers, it sounds like a hot-rodded Fender Blackface amp. As for its clean channel, all I can say is that it's perfect. It has excellent Fender Blackface style cleans, think of a Super Reverb with the headroom, and quick response of a Twin Reverb and you'll get the idea. With the brightness and expander switch on and the bass and treble dialed back by a hair, and mids dialed back you get the nice scooped John Mayer style guitar tones. This amp truly deserves a lot more recognition among Blues and Blues Rock guitarists than what it has right now. If you swear by Fender Blackface amps then try this amp, you'll be highly impressed. If I need to pick flaws, I would say that a tremolo could have been a nice addition, a Blackface style amp feels a bit incomplete without it. The knobs for adjusting the send and return level of the effects loop could have been bigger, I find it tough to turn the diminutive trim-pots because I have thick fingers. The design of the standby switch is awkward, I wonder who the heck gave them the bright idea to not only use a small push-button switch as the standby switch but also tuck that darn switch in a tough to reach position under the power indicator. The design of the power switch is awkward too, it's located at the rear of the amp and it's a mini-rocker switch, yes you read it right, it's not even a full-size rocker switch or toggle switch. Whenever I have the amp placed near a wall I need to feel around the back for the power switch.