Electro Harmonix 12AU7EH

I did not like the stock Psvane 12ax7 in the Joyo amps, both Bluejay and Tweedy so I tested with a few tubes and found the EHX 12AY7 as well as EHX 12AX7 sound best in the Bluejay as they bring out so much nice low end to die for :D These tubes have a scooped EQ curve so if you like that mid scooped Fender tone this is it for the Bluejay! However for the Tweedy the EHX 12AU7 sounded best and it took away that raspy tone of the stock Psvane 12ax7 and provided fine dynamics and softness. Very much rounded up the whole tone and removed that solid-state harsh attack. Tweedy is a mid boosted amp of course and this 12AU7 makes it less harsh as mids can be rather ... ouch in the ear hole! :D