Hi all....Happy New Year. I have tried contacting Ben on this but I suspect he is probably way too busy and overlooked my email......Curious if I can use a KT88 power tube in this amp? I know the tube chart says I can use 6V's, 6L's and EL34's but am looking for some feedback on if a KT88 is too much for this amp? My amp is an old, initial version which was made back in '03. Thanks in advance for your reply!!