Icon's exuberant literature makes many claims for the Stereo 60 Mk 3 amp, including higher output power than most KT88 models can muster: 65-watt ultralinear or 35-watt triode. There's nothing outrageous about that, though, and indeed we've seen 100-watt amps using just a pair of KT88s.
The relatively high output power is partly responsible for the considerable weight of this amp, but the chassis is very substantially built too, complete with a solid copper top-plate around the valve area.
