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Originally Posted by aluren
i don't see why its ok when someone says the mids are good (or bad) but someone else saying they don't hear a difference is not...
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Seems to be at least partially in that the first sort of statement doesn't offend the integrity of the hobby or people's beliefs that their purchases and decisions are meaningful, whereas the other type of comment does. Not to say I think that condones the response it receives, but this seems to have something to do with why people react as they do.
As far as the OP's question goes, it isn't clear to me whether a portable amplifier is mandatory here. If you do want a portable, I'd favour something like the Xin amps as customisability affords more versatility in the amp, which IMHO increases price/performance ratio considerably (in addition to increasing service life, since you can retune it as you change headphones etc.). If you're trying to replicate the TBH/Hornet sound, it may be sufficient to try an AD8397 on the L/R channel and different op-amps in the 3/4 channel slot on the Supermini (such as another AD8397, or LMH6622/6642, AD8058, etc.), or whatever is the equivalent configuration on the Supermacro (and there you could use others, such as LM6172, AD8620 (I think someone tried this), etc.). I actually would favor a different configuration as I'm not a huge fan of the 8397, but it does appear at least several people are fond of its general signature. If you want to experiment with some other op-amps, I'd try maybe the LM6171/LM6172, AD8057/AD8058, AD8655/AD8656, AD8651/AD8652, or THS4051/THS4052...or some combination of those

Yeah, it seems overwhelming at first, but after a little bit it's really not that big a deal. I have a bunch of op-amps and I decided to install dip-sockets on my DAC I use at home so I can tune the sound signature (pretty dramatically) for different types of music, thereby greatly increasing its versatility. I do the same with my amps. It's pretty easy and saves a lot of money since you aren't having to buy a bunch of amps to get different sound signatures.
For a desktop amp, though (in case you don't need a portable), I'd probably look at the M3 or Gilmore Lite (or maybe PPA too?).
Chef - Of any the amps discussed on head-fi, I've observed RSA's amps probably receive the greatest level of vocal, extensive endorsement and enthusiasm from their supporters, but I don't think it would be accurate to say the Hornet is the best in any sort of absolute sense. Some people do seem to be very fond of it, but people definitely have different tastes, and additionally I've found that there exists some level of information vacuum on these forums about what sorts of options people really have available in terms of both products and in terms of what they can really achieve in this sector of amplification.