All- I just got my new Classic 400 and before firing it up, I went into the head to make sure that all of the tubes were socketed properly. As for the power tubes, they appear to be the KT88's with the straight sides. Here is where I think it gets weird. My pre-amp tubes are as follows (looking from the front): My front 3 are Electro Harmonics 12AX7EH's The rear 3 are (starting from the left) 2 - Sovtek 12AX7LPS's and then the last one on the right is a JAN Phillips ECG 12AT7WC AGX. Is this tube setup from the factory unusual? I don't recall others having this setup from the Peavey factory (I could be wrong). I thought that most if not all said that theirs came with all Chinese pre-amp tubes. My Classic is one with the non-pointed Peavey (newer) logo on the front and it had a hang tag on it that read: "Classic 2001 World Tour" "Access All Areas" In any event, the head fired up and works like a champ! I only have about 10 minutes on it.