Are there decent legitimate TPA3255 amplifiers?

H

hard-mule

Active Member
I want to replace my class-D amplifier which uses tas5756m amplifier chipset.
I just want to drive a pair of bookshelf speakers with sensitivity of 87dB and impedance of 4~8 ohm.
If an amp can pump out 10~16W into each channel comfortably, I would be satisfied.

It seems the holy grail of affordable class-D is now TPA3255. So, I'm looking for TPA3255 amplifiers.

If I search aliexpress.com for tpa3255, I find two kinds of generic no-name amplifiers.
I don't know if they are fake or legitimate since they are no-name amplifiers.
Right now, I'm waiting for allo.com to release a TPA3255 amplifier.

If you know any decent options, let me know.
 
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take a peek at parts express...any pay attention to the tech docs. I am about to pull the trigger on a D or mebbe a smaller 15 w a/b. This will go in a a receiver where L/R common is tied...many class D and bridgeable a/b cannot tolerate that without smoke.

Id say the parts express units are more reputable in terms of MTBF...
 
I've been running two Aiyima A1001 mono tpa3116 for several months now. They just came out with a more powerful tpa3255 version - model A3001.
Search Amazon for ""aiyima" in electronics" and you'll see their complete amps and power supplies. There's a thread on here involving the A1001 (I'm part of it). Can't remember the thread title, though.
 
imral3 said:
I've been running two Aiyima A1001 mono tpa3116 for several months now. They just came out with a more powerful tpa3255 version - model A3001.
Search Amazon for ""aiyima" in electronics" and you'll see their complete amps and power supplies. There's a thread on here involving the A1001 (I'm part of it). Can't remember the thread title, though.
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AIYIMA and many other selles sell no-name stereo TPA3255 amp.
AIYIMA sells https://www.aliexpress.com/item/32996463571.html
 
hard-mule said:
Right now, Allo Volt+ seems to be the best option with TPA3118 which is very similar to TPA3116.
Allo will release TPA3255 amps soon.
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You remind me of another guy who had post after post regarding the TPA amps and power supplies. I'll tell you like I told him, wait for the Allo version which should be released around the first of the year.
 
Poultrygeist said:
Is English your second language?
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Yes, it is. I'm not strong at english idioms. I probably don't know more than 20,000 words. I cannot read novels written by elite english writers fast because I have to constantly look up english dictionary.

Poultrygeist said:
When one uses the phase "the first of the year" it's understood that it's the year that's closest at hand.
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I still don't know whether you mean 2019 or 2020.
2019 is closest to me right now.

I guess your english idioms came from a regional dialect. I'm experiencing lingual relativism among english users.

By the way, how do you know allo's release schedule?
 
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hard-mule said:
Yes, it is. I'm not strong at english idioms. I probably don't know more than 20,000 words. I cannot read novels written by elite english writers fast because I have to constantly look up english dictionary.



I still don't know whether you mean 2019 or 2020.
2019 is closest to me right now.

I guess your english idioms came from a regional dialect. I'm experiencing lingual relativism among english users.

By the way, how do you know allo's release schedule?
Click to expand...

In America today, the first of 2019 was nine months ago, while the first of 2020 is only three months in the future, thus 2020 is closest to us. Check a calendar specific to your locale.
 
So, is allo actually going to release its TPA3255 implementation around 2020-01-01?

I contacted allo.com, but they never replied.
 
E.Man said:
Does it have a name yet?
Is it still coming Jan 1st ?
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One of the members on the diyAudio forum is a rep. He posted a few months back that it would be introduced around the first of the year.

But that probably does not mean 1-1-20. You may be able to find out a date by contacting allo.com. I emailed them about something else and they promptly replied.
 
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Recently, I wanted to purchase the Aiyima TPA3255 2.0 amp (without Blue Tooth) through eBay, but the seller in China could not ship the amp due to the COVID-19 virus outbreak. They were great about it and refunded my payment. That left me with the only option to purchase the Aiyima TPA3251 2.0 amp through Amazon.com who had some inventory of these amps in the US.

I connected this amp to my main system using my Audio Research LS7 tube line stage preamp and modified Klipsch Forte II speakers. This is where I started my critical music listening and discovered that the right and left channels are reversed, so I switched my right and left hand RCA interconnect connections. My reference power amplifiers are a rebuilt McIntosh MC240 vacuum tube amp and Pass DIY Sony VFET Class A solid state amp I built with the diyAudio.com store kit offered several years ago.

Both of my reference amps are excellent and I am quite pleased with the low distortion, highly musical performances of both amps in my system. I connected the Aiyima amp to the Audio Research preamp and my speakers, and I have to say this little amp is impressive. First of all, it is very quiet with no music playing through it. I held my ear close to my efficient Klipsch speakers and heard no noise. As for the sound, it is not as good as my reference amps, but it wasn’t that far off either, which is astounding considering that this amp is only $50 USD. The fact that the channels are reversed is my only real complaint about this amp.

I have my volume on the Audio Research set in my normal listening level position, and I have the volume pot on the Aiyima amp set to 2 to 2:30 o’clock with best results. I am very impressed with the frequency response from the lower registers to the treble. This amp has a smooth, neutral frequency response and tone. What is surprising is the separation and detail I hear with this little amp. The soundstage is large, but could have more depth. I am satisfied with my purchase even with the mislabeled channel connections.

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I have placed an order for the OPA1622 op amps on DIP8 adapters, and I will try those. If I hear a significant improvement, I might be tempted to try the NJR MUSES02 op amps.
 
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