Best Ti3255 Amplifier >>>Aiyima? Fosi Audio? O-Noorus?

[AudioX3]

It really doesn't matter as when you go to Aliexpress to buy you will see the extra cost of the Tarrif is staggering. Even if it is 30% or 55% for under $800 goods it is rediculous to buy. So enjoy your tax to the average joe as China is not absorbing it.

Not the price listed is the same as usual but then go to checkout and see the Additional Cost and there is you Tarrif tax.

 

[brunoccj]

Sound-wise, Fosi products tend to be warmer than other brands, and Aiyima tend to be colder.

 

[Guddu]

Sound-wise, Fosi products tend to be warmer than other brands, and Aiyima tend to be colder.

Sound-wise, Can you tell why is that?

 

[Roland68]

Sound-wise, Can you tell why is that?

This is due to the orange knob on the Fosi amplifiers

 

[brunoccj]

This is due to the orange knob on the Fosi amplifiers

I don't get the joke. Hope the "orange" is not about Trump. Differrent designers has different tastes. Fosi used to manufacture Class A/B amps, like the hd-a1 (tube like HDAM discrete circuit).

 

[Bruce Morgen]

Sound-wise, Fosi products tend to be warmer than other brands, and Aiyima tend to be colder.

 

[Roland68]

I don't get the joke. Hope the "orange" is not about Trump. Differrent designers has different tastes. Fosi used to manufacture Class A/B amps, like the hd-a1 (tube like HDAM discrete circuit).

Orange is generally considered a warm color, which is what the joke was referring to. Next time, just use Occam's razor, because I can't understand the jump to Trump.

A different warm sound in two TPA3255-based amplifiers almost always comes from an expectation. Especially because the components and circuitry are very similar and don't offer the possibility of altering the signal in such a way.
Try finding the "warmer" of the two amplifiers in a real blind test.

HDAM modules were always a big joke for me. A tuner friend of mine made a fortune for a long time by selling tunings for the HDAM modules in Marantz devices. However, he first let his customers decide for themselves in a blind test which sounded better to them.
The tuning consisted of a simple circuit board with an inexpensive op amp that bypassed the entire HDAM circuit.

By the way, HDAM modules never had anything to do with tube sound; someone invented that to fool audiophiles.
The Marantz HDAM (Hyper Dynamic Amplifier Modules), and there are no others, are nothing more than discrete op-amp circuits in which Marantz wanted to achieve greater dynamics, more detail, and better soundstage reproduction with faster rise times and wider bandwidth.
Everything else is just fairy tales.

 

[Bruce Morgen]

By the way, HDAM modules never had anything to do with tube sound; someone invented that to fool audiophiles.
The Marantz HDAM (Hyper Dynamic Amplifier Modules), and there are no others, are nothing more than discrete op-amp circuits in which Marantz wanted to achieve greater dynamics, more detail, and better soundstage reproduction with faster rise times and wider bandwidth.
Everything else is just fairy tales.

Shades of the "Analog Cell" front ends in PS Audio's Class D power amps: total nonsense.

 

[anonyless]

i'd like to add my 2 cents here -
my first class D amp Aiyima T9 Pro (TPA3250, tube preamp) sounded pretty good to me connected to Q Acoustics 5010 desktop speakers, but it seems to me not to have enough power to really move the speakers at higher volume.
then got 3e Audio A5 (TPA3251x2 PBTL) and it sounded way way better to me, including at higher listening volume.
one huge thing I noticed is the A5 does not have any humming noise while no music is playing - unlike the T9 Pro which does have a quiet hum.
After 2 months or so with the T9 Pro stored, I connected it again in the exact some configuration (SU1 DAC on RCA input, WiiM Ultra) and got that quiet hum again .
I assume this has to do with power supply circuitry or the power supply itself. don't think i'll ever buy another Aiyima amp again.

 

[Bruce Morgen]

don't think i'll ever buy another Aiyima amp again.

In contrast, my two Aiyima A07s have been performing flawlessly pretty much 24/7 for 4+ years. Go figure...

 

[anonyless]

In contrast, my two Aiyima A07s have been performing flawlessly pretty much 24/7 for 4+ years. Go figure...

maybe they arrive with a much better power supply..?
good to know about their reliability though

 

[Bruce Morgen]

maybe they arrive with a much better power supply..?
good to know about their reliability though

I bought them without a PSU -- I don't trust those sealed "power bricks" manufacturers provide and use a single 48V 10A industrial SMPS to run both A07s. That requires a little DIY to wire up, but IMO it's worth the effort -- but you have to know what you're doing to stay safe because mains voltage is involved.

 

[douede]

.../...
A different warm sound in two TPA3255-based amplifiers almost always comes from an expectation. Especially because the components and circuitry are very similar and don't offer the possibility of altering the signal in such a way.
Try finding the "warmer" of the two amplifiers in a real blind test.
.../...

I tweaked a lot of (FDA and D-class) amplifiers, and any components swap (especially caps, even small value MLCC, or coils/beads) results in a noticable sound modification, even on the voltage support rails.
Sometimes very noticable : Just replace a FC with a Simic II or a FG, or then a KZ...
It takes me 10s to find the "warmer" in a blind test, with no fault.
( No need to answer me that i imagine the differences i hear...)
And: Just take a look at the creator of the hereunder thread... :
https://www.diyaudio.com/community/threads/best-electrolytic-capacitors.151392/

 

[Bruce Morgen]

I tweaked a lot of (FDA and D-class) amplifiers, and any components swap (especially caps, even small value MLCC, or coils/beads) results in a noticable sound modification, even on the voltage support rails.
Sometimes very noticable : Just replace a FC with a Simic II or a FG, or then a KZ...
It takes me 10s to find the "warmer" in a blind test, with no fault.
( No need to answer me that i imagine the differences i hear...)
And: Just take a look at the creator of the hereunder thread... :
https://www.diyaudio.com/community/threads/best-electrolytic-capacitors.151392/

There's no debating that replacing components can alter the performance of an amplifier -- the question is, do such alterations yield an actual, objective improvement or simply an audible change that pleases a particular listener? Let's not forget the definition of high fidelity -- that being great faithfulness to the source media -- and the attendant ideal of "a wire with gain." I for one want my amplifier to simply present a faithful replica of its input suitable for driving my speakers -- any "seasoning," e.g. "warmth," "brightness," "punch," "richness," "brilliance" is a function that belongs elsewhere in the signal chain IMO. I certainly don't want an amplifier to impose a default "sound signature" as a default lens through which any and all input will be processed -- IMO an amp is an amp, and should be designed to avoid functioning as a de facto processor to whatever extent that is technically feasible.

 

[Roland68]

I tweaked a lot of (FDA and D-class) amplifiers, and any components swap (especially caps, even small value MLCC, or coils/beads) results in a noticable sound modification, even on the voltage support rails.
Sometimes very noticable : Just replace a FC with a Simic II or a FG, or then a KZ...
It takes me 10s to find the "warmer" in a blind test, with no fault.
( No need to answer me that i imagine the differences i hear...)
And: Just take a look at the creator of the hereunder thread... :
https://www.diyaudio.com/community/threads/best-electrolytic-capacitors.151392/

I absolutely don't believe in modifying devices' sounds with components. Replacing an FC with a Silmic is like swapping one evil for another.
We discovered 22 years ago what nonsense it is to make completely uncontrolled interventions and changes to the music signal. That's what DSPs are for.

 

[brunoccj]

i'd like to add my 2 cents here -
my first class D amp Aiyima T9 Pro (TPA3250, tube preamp) sounded pretty good to me connected to Q Acoustics 5010 desktop speakers, but it seems to me not to have enough power to really move the speakers at higher volume.
then got 3e Audio A5 (TPA3251x2 PBTL) and it sounded way way better to me, including at higher listening volume.
one huge thing I noticed is the A5 does not have any humming noise while no music is playing - unlike the T9 Pro which does have a quiet hum.
After 2 months or so with the T9 Pro stored, I connected it again in the exact some configuration (SU1 DAC on RCA input, WiiM Ultra) and got that quiet hum again .
I assume this has to do with power supply circuitry or the power supply itself. don't think i'll ever buy another Aiyima amp again.

Maybe the humming comes from the tube?

 

[anonyless]

Maybe the humming comes from the tube?

it doesn't work properly without its 2 tubes

 

[Batmobil3250]

i'd like to add my 2 cents here -
my first class D amp Aiyima T9 Pro (TPA3250, tube preamp) sounded pretty good to me connected to Q Acoustics 5010 desktop speakers, but it seems to me not to have enough power to really move the speakers at higher volume.
then got 3e Audio A5 (TPA3251x2 PBTL) and it sounded way way better to me, including at higher listening volume.
one huge thing I noticed is the A5 does not have any humming noise while no music is playing - unlike the T9 Pro which does have a quiet hum.
After 2 months or so with the T9 Pro stored, I connected it again in the exact some configuration (SU1 DAC on RCA input, WiiM Ultra) and got that quiet hum again .
I assume this has to do with power supply circuitry or the power supply itself. don't think i'll ever buy another Aiyima amp again.

And is there an additional text in the pipeline? coz I try to figure how come the Aiyima T9Pro now is a A5???

 

[anonyless]

And is there an additional text in the pipeline? coz I try to figure how come the Aiyima T9Pro now is a A5???

easy, you go on Aliexpress and buy a new amp. i wrote "then got 3e Audio A5". i think it's pretty clear