4xKT88 head with a smaller chassis?

[Walt-Dogg]

Did Sunn ever make a four power tube, specifically KT88 heads that use the mid-size or smaller chassis as opposed to the extra wide 2000s/1000s/1200s chassis? Just trying to help someone out with this knowledge.

[BassHog]

Hi Walt, it's Scott your amp tech.

To answer you question, yes there is such a rare bird. It's called a Coliseum PA head.
Here is a link to a couple of pictures, you can see it has much bigger transformers and 4 KT88 power tubes.

http://www.vintageguitaramplifiers.net/for-sale/vintage-rare-1969-sunn-coliseum-p-a-head-amplifier-amp/29985/

Here is another one that has a "Studio PA" name badge.

http://www.mygear.com/items/view/35062/false/Very+Rare+1967+Sunn+Coliseum+PA+head+Price+Reduced+

Here is the schematic.

http://www.4tubes.com/SCHEMATICS/BY-BRAND/Sunn/Coliseum%20PA.gif

I have seen a few of these beasts on eBay before, but I don't think they made too many of them and they are certainly not cheap.

Scott