Scored this guy today for $650 and my Ibanez sz520 and I'm pretty stoked. It's the 1959 model as opposed to a 2203 or 2204. It's loud as balls, and I mean it gets unbearably loud really friggin' quick. I can't turn it up enough in the house to get it to naturally distort, but holy shit does it sound beautiful even at lower volumes. The serial number on the back verifies that it was built in 1978 and it appears to be unmodded. I did some reading up on it and it seems that these guys are becoming a rare item so I'm gonna leave it alone and just use distortion pedals to get the gain up when I need it. I'm thinking a new change of tubes is in order for this beast, so does anyone (Lasse?) have a recommendation for me? What about a nice distortion pedal to pop in front of it? Enjoy a few pics Playing together with my Mesa. Back panel None of the outputs were labeled with an ohm rating, which really confused me. I searched around and found that the knob on the right of the 4 outputs sets the ohm rating. I actually had to pull it out to change positions like a jumper connector. Cause that's what it is apparently. **EDIT** Finally got around to opening up the guts.