• WANTED: Happy members who like to discuss audio and other topics related to our interest. Desire to learn and share knowledge of science required. There are many reviews of audio hardware and expert members to help answer your questions. Click here to have your audio equipment measured for free!

3e Audio TPA3251 TPA3255 Finished Amplifier with PFFB is coming!

For how much did you order? I seem to remember the A5 was something like € 238 with tax to Germany just a week or two ago. With the new winter sale and coupons on Jan 1, it jumped to € 277.99 or $ 273.69. I know, since it is above € 150, they will discount the 19%, but that doesn't make it any better because I will need to pay the 19% VAT on (sales price + shipping) to the parcel service and a brokerage fee on top.

What is also strange, prices in € in Aliexpress used to be just $ converted at the interbank rate. Since Jan 1st, Aliexpress seem to turn a pretty penny on currency conversion, just as Paypal does, i.e. the € prices are about 5% higher compared to the interbank rate. Coupons are still being displayed but are all gone with almost three days to go for the sale :(
I payed 360€ for 2 A7 Monos plus 80€ import taxes delivered into Germany.
 
Thanks. The A7m is currently sold out and lists at €205.39 * 2 / 1.19 --> € 345. Did those € 360 contain shipping?
 
Bildschirmfoto 2025-01-05 um 21.06.49.png
order summary here. price adjustment was made by Ali Express since they know about import taxes to be covered by customers.
 
ok, so price went up, but only by a few % which is just how much Aliexpress are adding now for not paying in USD.
 
For how much did you order? I seem to remember the A5 was something like € 238 with tax to Germany just a week or two ago.
This price has been shown as being discounted, not the regular sales price. We might have come to expect that everything is always discounted on AliExpress, but in this case the price is simply back to normal (exactly as it was for those of us who purchased during the first days ...).
 
Hi Amigos:

It has been for around 2 years after we release TPA3251 and TPA3255 series amplifier DIY kits with post filter feedback design that improve the overall performance of the single chip itself.
With many buyers(diyer) enjoyed our diy kits and having so many fun from their own diy project or share to many other members. We know that there are many users also interesting on some finished unit that without involve deep diy experience but still maintain some entry level like op-amp change base on their private favorite on the expected sound quality.

Along with out diy kits was reviewed by ASR, there are also some people are interesting on the high performance, high quality, high maturity design implementation that we are keep moving forward with our mission,with this background and our past experience, now we are planning to build a fully new finished amplifier that combined with our successful experience on DIY kits and learning from other great brand.

This new finished amplifier will more focus on a pure amplifier, with high-performance, high-quality design but keep a simple form factor to achieve a better cost performance.

  • Include both TPA3251 and TPA3255 SKU
  • Most of the design are leverage from diy kits but integrated with more feature as one finished product that plug and pay easily.
  • TPA32xx chip configured as PBTL per channel to achieve best audio performance and thermal efficiency, providing higher current driver capability that can support 2ohm load.
  • Input buffer Op-amp use DIP-8 footprint given more feasibility for user perform different op-amp anytime, which is the funniest of this amp in terms of diy capability.
  • Launch schedule - Q3/2024
  • With and without PSU options (no need to buy a new one if you already have one)

View attachment 372005
View attachment 372006

View attachment 372007

View attachment 372008
Great i saw in AliExpress https://es.aliexpress.com/item/1005007964184254.html looking forward measurements here im super Happy with my 3e-Audio tpa3255 PFFB stereo DIY module (150€) reviewed here 102 SINAD i asebled to a linear psu and box... If this measures even better and is same flexible regarding power supplies (i LOVE linear ones) i might buy also
 
My second A5 has arrived and is currently getting some playing time into my Radiant Acoustics Clarity 6.2. I'm using my Lyngdorf TDAI-1120 as the streamer and "preamp" only right now. Sounds absolutely great. Not having done any real side by side comparison to the 1120 used as an integrated amp there's nothing I'm missing.

These Clarity 6.2 are not exactly easy to drive. Sensitivity is rather lowish (82 dB @ 2 V rms, 1m, 85 db @ 2,83 V rms, 1 m) and the impedance is on the low side, dipping into 2 ohm in the treble:
CL62 impedance.png


The A5 has absolutely no problems driving them to levels my neighbors are not too happy about.

The thermal design looks excellent to me. The temperature on the top is 38° C when it's 44° C at the bottom, right where the heatsink attaches to the case. Ambient temperature was 20° C.

So, the first impression is impressive.
 
Last edited:
My second A5 has arrived and is currently getting some playing time into my Radiant Acoustics Clarity 6.2. I'm using my Lyngdorf TDAI-1120 as the streamer and "preamp" only right now. Sounds absolutely great. Not having done any real side by side comparison to the 1120 used as an integrated amp there's nothing I'm missing.

These Clarity 6.2 are not exactly easy to drive. Sensitivity is rather lowish (82 dB @ 2 V rms, 1m, 85 db @ 2,83 V rms, 1 m) and the impedance is on the low side, dipping into 2 ohm in the treble:
View attachment 419215

The A5 has absolutely no problems driving them to levels my neighbors are not too happy about.

The thermal design looks excellent to me. The temperature on the top is 38° C when it's 44° C at the bottom, right where the heatsink attaches to the case. So, the first impression is impressive.
Good info ... just wondering what your 1st A5 is driving?
 
Finally,Amir had spent his time perform A5 test.
thanks everyone for the patience.

 
Finally,Amir had spent his time perform A5 test.
thanks everyone for the patience.

Impressive measurements indeed. Congrats @3eaudio ! If I am not mistaken, it's the best measuring TPA-based amp ever reviewed on ASR.

I guess they will sell like hot cakes, which may boost your willingness (and capital) to launch new versions with integrated power supplies (and 12V trigger) .
 
Impressive measurements indeed. Congrats @3eaudio ! If I am not mistaken, it's the best measuring TPA-based amp ever reviewed on ASR.

I guess they will sell like hot cakes, which may boost your willingness (and capital) to launch new versions with integrated power supplies (and 12V trigger) .
Yes please! Especially after Amir's stellar review, I'd love to see a larger offering by 3E with those features (and maybe without the volume control - as a pure power amp)

Or @3eaudio just send me one of your demo units with 12v trigger ;)

Seems like prices on Audiophonics are up btw! Also showing product shots with 12v trigger :')
€279 incl VAT for the A5
€379 incl VAT for the A7
 
Last edited:
Good info ... just wondering what your 1st A5 is driving?
The first A5 is driving a pair of "Cyburgs Needles". The Needle is a pretty famous mini TQWT that suits a wide range of 4" full range drivers. In this case I'm useing the Dayton Audio RS100-4 and they're great.

Here's one example of the construction plans:

IMG_20211120_233938.jpg
I did not built these myself but got them 2nd hand for 20 bucks. For the pair! The ugly non-fitting screws have been replaced in the meantime.

There are two more reasons why they sound so good:
1) The bass is offloaded to a cheap Monoprice "Premium Select 8in 200-Watt" Subwoofer. So the TQWT is mainly a convenient integrated stand :p. I got it even cheaper than cheap for 99 bucks during an Amazon sale.

2) A WiiM Ultra (the most expensive piece of kit in this chain) is handling subwoofer integration and RC equalization (manually developed using REW in this case). If WiiM would finally hear my plea and implement separate speaker EQ and room EQ (like Lyngdorf do) I could even get rid of the passive notch filter.

This combo has previously bee powered by a pair of V3 Monos. Without making any further claims I will just report that I enjoy more listening time since the A5 arrived. :D

In this use case there is really not much demand for sheer power, but the legendary "clean first watt" is what matters most. Spending most of the budget on the front-end and the least on speakers goes against conventional ASR wisdom (which by coincidence matches neatly with dealers' sales margin being the highest with loudspeakers). Nevertheless I'm absolutely sure it was the right thing to do.
 
This is absolutely the right thing to do, except no one else can follow your path because this equipment is nowhere available and not at this price ;)

I’m planning to add a subwoofer as my next step once the A5 finally arrives. Any recommendations for something affordable yet great for music?
I’m not looking to shake the room, but rather to gently enhance it with fast, well-controlled, and non-boomy low frequencies.
 
This is absolutely the right thing to do, except no one else can follow your path because this equipment is nowhere available and not at this price ;)

I’m planning to add a subwoofer as my next step once the A5 finally arrives. Any recommendations for something affordable yet great for music?
I’m not looking to shake the room, but rather to gently enhance it with fast, well-controlled, and non-boomy low frequencies.
I've seen Rythmik is often recommended to this end. I have no relation and have never heard them myself.
 
The first A5 is driving a pair of "Cyburgs Needles". The Needle is a pretty famous mini TQWT that suits a wide range of 4" full range drivers. In this case I'm useing the Dayton Audio RS100-4 and they're great.

Here's one example of the construction plans:

View attachment 419364
I did not built these myself but got them 2nd hand for 20 bucks. For the pair! The ugly non-fitting screws have been replaced in the meantime.

There are two more reasons why they sound so good:
1) The bass is offloaded to a cheap Monoprice "Premium Select 8in 200-Watt" Subwoofer. So the TQWT is mainly a convenient integrated stand :p. I got it even cheaper than cheap for 99 bucks during an Amazon sale.

2) A WiiM Ultra (the most expensive piece of kit in this chain) is handling subwoofer integration and RC equalization (manually developed using REW in this case). If WiiM would finally hear my plea and implement separate speaker EQ and room EQ (like Lyngdorf do) I could even get rid of the passive notch filter.

This combo has previously bee powered by a pair of V3 Monos. Without making any further claims I will just report that I enjoy more listening time since the A5 arrived. :D

In this use case there is really not much demand for sheer power, but the legendary "clean first watt" is what matters most. Spending most of the budget on the front-end and the least on speakers goes against conventional ASR wisdom (which by coincidence matches neatly with dealers' sales margin being the highest with loudspeakers). Nevertheless I'm absolutely sure it was the right thing to do.
That's quite a specialized system ! ... you are answering quite a few questions with both those systems of yours using the A5. I mean, you've got two 'extremes' going in parallel in the sense of 'not exactly mainstream'. And not majorly efficient either.

I'll also be comparing with a pair of V3 monos but I've got to go pick the A5 up 1000 miles away in a couple of weeks! Worth it for the discount now I see the prices on Audiophonics.
 
This is absolutely the right thing to do, except no one else can follow your path because this equipment is nowhere available and not at this price ;)

I’m planning to add a subwoofer as my next step once the A5 finally arrives. Any recommendations for something affordable yet great for music?
I’m not looking to shake the room, but rather to gently enhance it with fast, well-controlled, and non-boomy low frequencies.
I've gone down this subwoofer route, but you need to be careful with class D ... sorry if you have posted or had replies on this before. The Wiim Ultra has a sub out so with RCA connection you will be fine. Speaker level connections can be problematic because of how class D is earthed (or not earthed) on the negative speaker terminal.

I am using a lovely piano black MJ Acoustics Pro 50 MKii bought from a seller in Holland on Marktplaats a couple of years ago... they just underpin nicely while being small. They don't give you 'punch' though, but they have excellent integration / phase / volume / level options - and like new despite being 18 years old (or 20)? MJ Acoustics are a bit like the original REL's in concept where the whole emphasis was on quality and control - but not so stratospherically priced (I ended up with two).
 
I see the amps are now available at Audiophonics too but the prices are really high.....

@3eaudio Can we get a coupon code that works there too?
Thank you
 
I see the amps are now available at Audiophonics too but the prices are really high.....

@3eaudio Can we get a coupon code that works there too?
Thank you
Price incl VAT for the A5 is actually €3 cheaper on Audiophonics for me - €279 vs €282,39

And shipping cost to Belgium is around half.

A5 seems to be sold out on AliExpress currently.
 
Back
Top Bottom