Yeah, I own an AC30 and I don't think the sound of the TC-15 is much like it at all - more like the Matchless Amps I've encountered, but I think the TC is most similar to the Matchless in the top end... the lows and low-mids of the TC are different IMO. I would say the TC is reminiscent of a Matchless but not really a "clone". And for my money the TC is little more "special"... I own and have recorded MANY amps, and I put the TC-15 right up there in the top 2 or 3 I've had the pleasure of working with...
Hope this helps.
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Brent Bodrug
Producer-Engineer/Songwriter
www.slyfichapel.com