I have owned a lot of great amps and it's rare that anything blows me away. I love the LJ20 but all it does is does tweed deluxe, albeit it better than any amp around. Because I like the TK Imperial, I've been running two of them However, the other day, I scored an LJ40. I have NEVER heard an amp with this amount of punch, power, detail and clarity. It's utterly astonishing- like Brownfacey tones and the power is limitless. If ever you get the chance, this $4500 monster just rules. My gast is flabbered.