The amp will output 40 watts, just 20 (or 22 or whatever) per channel. That means you can get the volume of a 40 watt amp, but only with the headroom of a 20 watt amp. It can sound clean, just not totally clean when cranked up high. Don't expect it to have the same kind of headroom as a 50 or 100 watt amp, because it doesn't have it. 40 watts into efficient speakers is still LOUD! Triaxis and 20/20 is a sweat combo. However, if you love those big fat blooming fender twin reverb type of clean tones at high volumes, I'd go with something with a bit more power. If you love a Fender deluxe reverb kind of snappy gritty clean, the 20/20 will do that great at high volumes.