this amp is for me the most successful amp at doing what it is designed for that i know of. it's the single most pleasing purchase i have made in 20 odd years of pro music, and the one which has exceeded the hype most satisfyingly. i unpacked the amp (50W), plugged it in to a large size bogner 2x12" cab with greenbacks, and immediately heard this beautiful warm full-range sound. spent the next hour trying to get a bad sound out of the amp, failing miserably. realised it could get so many great marshally sounds, i gave up trying to get well-known sounds early on not only because it was too easy, but mainly because it was so much fun just playing. the tone controls and switches are so responsive and gratifying - more bite, add a little treble or presence. duh. more body, add a little middle. duh. too much bottom end, roll off the bass. duh. point is, all this happens exactly as one would want it to. it's not rocket science, but so few amps are so just made to please. took it to a big show, it behaved perfectly, lots of compliments on the sound, and i don't even know it very well yet. i can't wait to record it! yes, i would love it to have some kind of footswitch option, maybe between vintage and modern, or maybe with a boost, but the basic sound is just so right at whatever gain level one chooses that i can live with it anyway. great with pedals, great for feedback, great for big fat (or lean) greasy chewy organic pure el34 tone. makes my rsa23 sound a bit thin and choked in comparison at higher gain points, although i shan't be getting rid of it just yet... emplex II - what a winner... highly recommended!