I bought this head a few months ago from a local GC. I haven't had time to really give it a good play through. I did a few times in my small room but it was so loud there was no way to verify it sounded proper. I have used it as a power amp with my JMP-1 and the power amp section sounded fine. Today I decided to run it with a load box and profile the amp with my Kemper. I also have a SV20H that I have profiled recently. So, in theory it should sound some what like the SV but probably a bit more bigger. This one does not sound anything like the SV. My SV on the High treble channel has much more bite/Gain and treble to it. In other words, this one has less gain and treble than the SV. I swapped in the same exact tubes to see if maybe that could be the difference in sound. No, it still sounds way different. So, I opened it up to take a look and uploaded a pic for you guys to see. I can see some areas on the board that look like parts are missing: C5, C7, R18 and C2 looks a little suspect. What do you guys think is going on here?