Hi Activ8' Good luck with the '68. Ive had one for about 10 years, I still love it. It's been very reliable and sounds great. I got a couple Mullard preamp tubes from Mojotone.com, that I'm really happy with, for less than $20US each. I have the 68DR and a silverface '75 DR, I put EVM12Ls in both of them. They are very efficient, sound good and are seemingly indestructible. I also recently got a speaker, for a Super Champ, which is designed to be a replacement for tho old JBL 12" speakers. I really like it, it really roars if you turn it up, 102 dB efficiency. https://usspeaker.com/beyma liberty-1.htm Let us know how it works out!