Just managed to source an old Ashdown 550 Spyder several years after selling my old 330 spyder. I know these are long discontinued (why ashdown?) but ive always liked their core tone and simplicity - and that’s coming from a dyed in the wool all valve/ampeg player!
Question is on these - theres loads of contradicting info online about what valves should be in the pre-amp. Even Ashdown's site differs depending which bit you read. Seems commonly most places say its 2 x 12AX7's, some say its 1 x 12AX7 and 1 x 12AU7?!?. Obviously I know they are interchangable to a degree and different valves will affect the sound (presumably 2 x 12AX7's will increase output but lower clean headroom?).
Is anyone still using these amps and if so what valves do you have in it? Finally, once we've ascertained what the correct valve itinery is has anyone had much success with tube rolling in these?
Thanks for your time