Don't know about modding, but if the circuitry is identical as stated, can't imagine why not. For me however, the stock version is quite satisfactory.
Now for the price: yes, it is sold at all the large on-line stores for $299, but for non-factory sealed is $269, and
if you can find one in the "scratch and dent" category it's $225. AMS is the only on-line store that I deal with that offers the full factory warranty on either the non-factory sealed or "scratch and dent". So, I got mine for $225 with the full 5 yr. factory warranty and, I was unable to find the blemish. I think it's quite a value!
Yesterday, my new speaker cab arrived from
http://www.lopoline.com/catalog/item/4254823/6931490.htm Another great deal due to their once a yr. 'Black Friday' sale with 30% off. Got this cab for $330 (normally $475) plus shipping. Celestion V30 and G12H30 are great sounding, quality speakers and go for around $145-$149 each at the on-line discount music stores. The 112 speaker cab I've been previously using has a Celestion Seventy80 speaker which sounds very good, too, but not quite the quality of the V30 nor the G12H.
Only thing I didn't do quite right was I ordered the Lopocab in white tolex thinking it matched the TSA15H when in fact the TSA is off-white or cream. Vanilla would probably have been a better match, but as it is, it doesn't look bad. And of course, the new 212 vertical slant cab can be used with any other head I may decide to buy.
