When Don heard the Streamliner, he REALLY liked it, and is actually considering buying a 600 for his shop as his primary 'test head', since he is all about 'clean tube tone'. He loves my TecAmp Puma, which has at least a bit of that 'sweet' tone also (big, warm low end and a 'sweet' sort of non aggressive top end), but the Streamliner has replaced the TecAmp as his favorite small amp at this point.
Yeah, when I hear that low end of the Streamliner, it seems to sit just perfectly in the performance range of those 3012LF and 3015LF drivers, and there is enough top end to really open up the mid drivers nicely in the lower treble region. The power at 8ohms is a good thing to for those cabs, which can use it.
Nice! I'll watch for you post on this.