Re: Peavey Classic 30?
The internal speaker is 16 ohms, and the ext cab jack needs 16 ohms as well. I have one, and it's a great amp. I was looking at Atomic 16/Astroverb when I ran into reviews about the PC 30, and it's been great so far. With Groove Tubes and high output humbuckers, it had a killer distortion. I've since changed to JJ tubes, swapped pickups in my Les Paul to Seth Lover bridge and Antiquity neck. The clean is beautiful, the drive is great for blues, and there's some good ol rock crunch like ZZ and ACDC. I kinda miss the distorion with the old tubes and pickups, but the sound is so much creamy and glassy at the same time, and like you said, there are pedals for the higher gain stuff.