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Here are the specifications for a Sansui product I bought in the spring of 1980. Note particularly the at or below full power in the distortion specifications. Attached for comparison is a link to the specs for a current Denon integrated amplifier advertised and sold at online retailers like...

I agree completely with pjug, in the western world a home amplifier is going to be operated in a room of 75 degrees F plus or minus maybe 3 degrees and with reasonable humidity. The original U.S. rule conditions seem fine to me and are probably only there to prevent companies from testing their...

Gross negligence! If it were me, back they go, and if you bought them someplace like Ebay, file a a complaint action so you get the shipping as well.

You mean you are both familiar with and adhere to the appropriate regulations? How very old fashioned of you !

Feeling cranky today, so to answer the OP's question, it appears that no one on here has any actual experience to offer with this specific product, which I have the same questions about. Unfortunately, that has not kept them from suggesting other products, or other system configurations, or...

Are the measurements at spinorama.org flipped? The summary says the smaller version goes deeper, is flatter and has a higher tonality score.

If you want to be the technically superior TPA3255 amp vendor don't follow Fosi down the changeable op-amp path, just choose the best performing part for your circuit. The kind of people who believe in magic are not your market.

Sure, I'm interested. Finished or even having something like the Ghent case kits for Hypex amp's would be good.

Thank you, listening to it now.

And you are sure that active speakers are safe to use in an operating room and won't interfere with the equipment? I'm sure there are standards for things like electrical noise in that environment and I'm guessing consumer products would not meet those standards.

Do you know if they are multi-voltage like the old ones? If so, I'm in! Just because I wanted and couldn't afford them as a kid.

Why are you out of your sector citizen?

So this seems like progress, the load dependency is mostly gone. My remaining question about these TI chip amps is: is the rising distortion at high frequencies something that is built into the chip, or can it also be cured with external circuitry? I want good behavior, not "good for class".

I have no background in electronics, so feel free to correct me if I am wrong. I would like to question whether or not the gain adjustment mentioned early in this review is a good thing. Yes, you get a slightly better measured (and probably inaudible) SINAD result. The technical reasons for...

And in a different vein:

I don't know if you consider Americana/bluegrass country. The banjo is a traditional American instrument

I agree that load dependency is THE issue with 3255 amps, but I don't think going to hypex is necessary. 3e has shown the way: https://www.audiosciencereview.com/forum/index.php?threads/3e-audio-tpa3255-260-2-29a-amplifier-review.50208/ For a few extra dollars and a little more design...

Thanks for your reply and suggestion. I have looked at TPA3255 amps but have not found one I really like yet. My Topping DAC (D50s) is fine, but their amps seem suspect. or at least there is a lot of negative talk about them.

Thanks for your helpful reply. I did find some measurements here: https://alpha-audio.net/review/the-best-amplifier-for-1000-euro-2022-edition/9/ which are somewhat underwhelming: meets the power spec at 4 ohms but not 8, and the distortion also seems a bit high. All of which may have little...