The T-amp is a unique product with limited application, but it certainly *does* produce high quality sound and *is* more than good enough for "critical listening". I believe it has special appeal to budding high efficiency speaker enthusiasts that haven't dropped the cash yet for a single ended triode amplifier (that typically cost from around $600.00 to $(THOUSANDS).00. Some of those high-end amplifiers only deliver 3 clean watts. 6moons.com and many others on the audio forums have raved about circuit in this amp for months now--the enclosure may be cheap and the price certainly is, but the quality sound the circuit itself is capable of is not hype.
That said, I don't use mine to drive a subwoofer--that would be rediculous. I only power my ~89dB Paradigm bookshelf speakers with it and they play loudly and cleanly, to the point where my wife regularly tells me to turn it down. That's in a 10 x 14 home office. I couldn't have a block party with my system, but I could go deaf with it in my room, if that was my goal. I DO have a 12" subwoofer, but it has its own 250-watt amp. The amp/speaker combination sounds really great.
So, as has been said several times now--the T-amp performs very well _within its limits_. If your goal is to lose your hearing half a block away, look elsewhere. If it is to enjoy great sounding music with moderate to high efficiency speakers on a tight budget (recommend 89dB sensitivity and higher), then it's worth a listen. Read the 6moons article. Check out the discussions on the other audio forums. You can always add a separate, powered sub later if needed.
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