"but if the amp sounds that much different/better why buy it in the first place ?"
hype
i bought my ace after watching a guitar player video demoing all the amps
various settings and modes.
the player used what appeared to be a stock gibson explorer for for all demos. the amp sounded warm, smooth and musical in all modes. the ultimate hotrodded marshall sound.
i bought a new ace, plugged in my stock explorer, and the sounds were
horribly brittle, harsh and very non musical.
i have heard cheap peavy transistor amps that sounded better.
i plugged my entire guitar collection into the amp with the same results.
i spent a week tweaking with no improvement at all. i was ready to puke and ebay the new ace.
then, someone in this forum reccomended i call dougs tubes. i did, and now my ace is warm with no brittleness at all.
it is possible that my ace was worse off than some of the others but i can tell you that after the tube change, my ace now sounds exactly like the demo video that persuaded me to buy it in the first place.
otter