What is the BEST Class D, TPA, TDA chip amp available?

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Those are good tubes. No long ago they were $5 each. The price went up due to so many Chinese amps that came with the 6j1 tubes.

I am excited to try it out this weekend. I will mate it to the current Volt+ I have but will most likely be purchasing the +D in the next couple of days because Allo is having a 10% BF sale.
 
I'll do my best here to explain the sonic differences (at least from my experience).

I use the STA-6 in my main living room system, but that's not necessarily because I think the STA-6 is so much better than the Volt+D. It is better suited for that particular room, though. The STA-6 has a somewhat laid back presentation while still having a great bass. I use big waveguide speakers in my living room, and that combined with the fact that my big open living room/kitchen area has a lot of hard surfaces (lots of big windows, hardwood floors, kitchen countertops, etc.), makes it necessary for me to pair my speakers with an amp that is not too forward in the treble and upper midrange. The STA-6 is great for that purpose. I had used it for awhile in my upstairs media room, which has big couches, thick carpet with a thick pad underneath, and not many straight/hard corners, and the STA-6 sounds almost boring and lifeless in that room. In my livelier (sound wise) living room, however, it sounds amazing.

The Volt+D, on the other hand, has slightly better imaging and separation of instruments than the STA-6. I'd also say the sound is just a touch livelier than the STA-6, especially in the high frequencies, but it is by no means a "bright" amp. It still works fairly well in my main living room system when I've used it. The main and most immediately obvious difference is that it's lacking the bass slam that the STA-6 has. The bass is there, but it's not nearly as powerful.

All in all, I have found that STA-6 sounds like what most people who aren't really into tube amps think a tube amp sounds like: Laid back with a warm sound signature. I will say, though, that the bass is better than most tube amps I've heard.
However, the Volt+D sounds eerily similar to some low-powered tube amps I've heard, including a Magnavox console tube amp I used to have. Voices and midrange sound really, really good on the Volt+D. The high frequencies also have some good sparkle without being too intense.

I hope that helps a little.
Should we have the short run Parts Express FX252A in this discussion?
I fave fooled with it for a couple hours in comparison with the Volt+D and find the comparative differences somewhat similar to your description of the NuPrime STA-6 to the Volt+D in the short term.
 
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Should we have the short run Parts Express FX252A in this discussion?
I fave fooled with it for a couple hours in comparison with the Volt+D and find the comparative differences similar to your description of the NuPrime STA-6 to the Volt+D somewhat similar in the short term.

I stupidly waited and missed out on the fire sale of the FX252A. Sounds like a nice little amp for a very low price. The value of that 252A bundle with the power supply, from what I've read, is incredible.
 
I stupidly waited and missed out on the fire sale of the FX252A. Sounds like a nice little amp for a very low price. The value of that 252A bundle with the power supply, from what I've read, is incredible.

I tried to get the word out on this excellent close out amp deal. It's 24v power supply alone can easily run $20.
 
I tried to get the word out on this excellent close out amp deal. It's 24v power supply alone can easily run $20.

I know! I even saw your post and visited the parts express link, but I waited a day or two...and then it was gone. My own fault. :whip:
 
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