Agree the katana is fun to play...BUT i would venture to say the id260tvp is WAY diff then the tvp15 amp. They are completely diff sound wise to me. I have tried the mono tvp amps and the id260 really is much better sounding then the tvp15.Thats just my take on it. I wonder if the katana 2-12 would sound better then the 1-12? I have the katana 100 1-12 and i so like the ease of use and simpleness of it.