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

[howard416]

I think they are pretty clear? What specifically do you not understand?

The B100 is a quantitatively better performer, but they both have reported reliability issues.

 

[HakanC]

The B100 is a quantitatively better performer, but they both have reported reliability issues.

Since I have two B100 on order I hope you don't mind explaining in more detail about the reliability issues regarding Topping B100
I know that other Topping amplifiers have reported reliability issues but I have not been able to find any about Topping B100
Could you help me?

As others have written here

I can’t speak to having much experience with Topping products, but so far, absolute 100% reliability for me with the stuff I own from them (two B100s and an E70 Velvet, with an L70 on its way already).

The reliability problems of the A70 Pro cannot be transferred to the B100, as the B100 does not have any modules cast with casting compound.

 

[ICIETDIYEUR]

Hello howard416 .

Don't worry about me, I PERFECTLY understand the graphs I have shown here although I should have put those of the TOPPING PA5 II which costs less than this 3eAudio with also better measurement results

By the way, you mention problems with the TOPPING B100 but I'm looking for where you could have read that...

I have TOPPING equipment (E70 VELVET and PA5 II plus) and although connected 24/7 and used for a long time during the day (I work from home on a PC and they reproduce the sound), I have NEVER encountered the slightest problem with them

I would ask myself the question more with an amplifier whose OPAMPS are plugged into a DIP8 support with the head down, especially if the user has carried out many tests with different OPAMPS (which is 'fashionable' -> 'OPAMP rolling').

This option can be very regrettable (amplifier in the trash) if people don't know what they're doing (and usually, they don't know it) knowing that the manufacturer clearly specifies that it 'gets rid of' responsibility if a bad handling is carried out: which leaves a wide 'field' of non-responsibility to send a device by proving that nothing has been done on that side...

These openings are simply a 'marketing argument' (for some) and I don't understand how it could have passed a CE certification in view of the size of the openings.

This is an amazing possibility because 3eAudio offers its 'DIY' PCBs (99% perfect) with the OPAMPS soldered on them, so why did you offer this here if it's only for a purely marketing reason ?

It is also useless to talk about the fact that the signal is not fully symmetrical up to the TPA chip since I have already done so, but also the two flaws I mentioned just before...
... the 'funniest' is the amplifier which automatically cuts off during modulations of too low amplitudes to return to service after 5 seconds (LOL)

Personally, my choice is made

 

[Audionaut]

Personally, my choice is made

yes? namely?
I appreciate your expertise a lot, dear ICIETDIYEUR, but i doubt that you will grasp all the subtleties of the acoustic experience and the differences between audio devices with your JBL studio 230.
Or do you have even higher quality speakers that are not in your signature?

 

[Deleted member 72219]

Since I have two B100 on order I hope you don't mind explaining in more detail about the reliability issues regarding Topping B100
I know that other Topping amplifiers have reported reliability issues but I have not been able to find any about Topping B100
Could you help me?

As others have written here

The B100s don’t have a very robust production against input signals which exceed their limit. Due to the nature of using a source that functions as both, digital preamp and bass manager, the power amps directly connect to the DAC without a preamp/attenuator in the middle. If your DAC has a particularly strong output that cannot be limited (for example, Geshelli J3 Pro which has 3V/6V RCA/XLR output), it is possible to accidentally send a signal which can damage the amp. I experienced a strange design issue with the J3 Pro where pressing the power button to change the LED colors (no, I am not kidding) sent a full voltage (3V) pop (yes, just a pop, not a constant signal) to the amps, and that killed the B100s, which I was fortunately enough to receive replacements for under warranty. If you’re using a preamp or attenuator between the DAC and your B100s, you may well be fine. If you’re relying on your DAC or source for digital volume control, so it hooks straight up to the amps without anything in the middle, be sure that the voltage can be adjusted down. The WiiM Ultra, for example, has adjustable voltage output. I use a separate, external DSP for room correction, and it has digital out, which is why I need to use a separate DAC and not my WiiM’s. Due to these issues, I’m selling my Geshelli and got a different DAC to replace it which has only 2V/4V output level.

I also sold the brand new in box replacement B100s and bought a pair of SMSL PA200 amps instead.

-Ed

 

[ICIETDIYEUR]

Hi Audionaut (AUDIO NOTE would have been better ).

Do you have any JBL Studio 230s to talk about it ?

Do you know their qualities (or defects) ?

Do you know the conditions under which I listen to them ?

I also own JBL XPL 200s but you may not know them ?

What do you know about my understanding of the intricacies of the acoustic experience and my differentiation towards audio devices ?

I can only tell you that I know how to fix them, optimize them or even design them but that's about it, sorry...

... Moreover, I do not make any connection between your intervention and the actual observations that I have listed concerning the above-mentioned devices.

 

[Audionaut]

Do you have any JBL Studio 230s to talk about it ?

Do you know their qualities (or defects) ?

Yes, of course.
otherwise I wouldn't be writing about it.
They are good speakers for their price - but they are not the end of the line

 

[ICIETDIYEUR]

'The end of the line' is only useful if you need it and the conditions for its proper use are met

 

[Galliardist]

yes? namely?
I appreciate your expertise a lot, dear ICIETDIYEUR, but i doubt that you will grasp all the subtleties of the acoustic experience and the differences between audio devices with your JBL studio 230.
Or do you have even higher quality speakers that are not in your signature?

With respect, the vast majority of actual sonic differences between electronic audio devices, today, can be heard through speakers as "high end" as the KEF Coda II budget speaker from 1981. And much of the rest is about amplifiers being able to drive tougher loads, or having a lower noise floor for sensitive speakers.

Better speakers and presentation can stress difference more, and headphones may show up lower level differences.

There is no need to be condescending about lesser speakers in this context though.

 

[ICIETDIYEUR]

Hello.

Go check out the topic: "3eAudio A5 Stereo Amplifier Review", then read this ->

@ Tofffsy.

When I saw the picture you posted above, my stomach hurt too much from laughing...

... Finally, I'm sad that you spent a lot of money to decrease the performance of this amplifier in order to get more distortions out of it, which you seem to enjoy, but that's your choice.

I think that you must live alone to be able to present a device in such a visual state: do not show it !

 

[FanatNsk]

People hi

How should these graphs be read/interpreted ?

These graphs were made on different equipment, so they cannot be compared. On my graph, the maximum power is measured via the AUX port of the Cosmos ADC Grade 0, the sensitivity of which is 0dBFS at 43Vrms. The measured power of 70.5W is achieved at 22.8Vrms, which is half of the entire range. This graph is just an illustration that the peak load of 70.5W corresponds to 1% distortion, but anything less than 10W has nothing to do with the real distortion of the amplifier, since it is measured at -30dBFS, so the noise and distortion level on my graph is higher than on the graph made via the APx555 - where there is an automatic adjustment of the measurement range so that it always corresponds to 0dBFS.

In my review there is a table with the results of measurements at 4.5W on an 8-ohm load, where the SINAD is 104.3dB.

 

[ICIETDIYEUR]

OK but it's still not as good, we'll agree

In addition, the two TOPPING amps (B100 and PA5 II) do not have the main defect of the low level cutoff (LOL) and the PA5 II does not have any problems with significant level difference at low volume, which is unacceptable...

And their OPAMPs are not likely to fall to the ground !

 

[Audionaut]

the vast majority of actual sonic differences between electronic audio devices, today, can be heard through speakers as "high end" as the KEF Coda II budget speaker from 1981

That's an opinion, but I don't share it.
A loudspeaker has so many faults in itself that you should always use those that best realize the compromise between the fewest faults and the most advantages.
If possible, no phase errors, time-correct behavior, as linear a frequency response as possible in the free field from 20hz to 20khz. Linear dispersion behavior, clean impulse response, no compression up to high levels.
These are markers that are rarely achieved in reality, but should be aimed for.

However, if you assume that other electronic devices are more or less flawless anyway and that any differences are inaudible, then the 40-year-old KEF bookshelf loudspeaker will of course also suffice.

 

[Galliardist]

That's an opinion, but I don't share it.
A loudspeaker has so many faults in itself that you should always use those that best realize the compromise between the fewest faults and the most advantages.
If possible, no phase errors, time-correct behavior, as linear a frequency response as possible in the free field from 20hz to 20khz. Linear dispersion behavior, clean impulse response, no compression up to high levels.
These are markers that are rarely achieved in reality, but should be aimed for.

However, if you assume that other electronic devices are more or less flawless anyway and that any differences are inaudible, then the 40-year-old KEF bookshelf loudspeaker will of course also suffice.

I didn't say that the Coda II is somehow perfect though, or that better speakers aren't to be aimed for.

My specific point is that the Coda II - indeed, most speakers of any age, but the old KEF is a speaker I know can do this from experience - will still allow you to hear the vast majority of actual audible differences between those electronic (and other source) components that have audible differences, as indeed will the JBL Studio 230. There is no "if" about it. If you own better speakers and they are suitably set up, you will hear better presentation of the music, of course. That;'s a different thing.

 

[ICIETDIYEUR]

People hi

Regarding the selection of OPAMPS that you can use in this amplifier, you can read the values of the resistors (in fact it is impedance) at the positive and negative input 'terminals' of these and use the table below to select the most suitable OPAMP to obtain the least possible distortion (THD+N) at the outputs of the OPAMPS that will transmit the audio signal to the TPA32xx chip ->

 

[howard416]

Hello howard416 .

Don't worry about me, I PERFECTLY understand the graphs I have shown here

Shameless disingenuity. How much does Topping pay you to nonsensically shit on other products? Do we need to start a post counter to tally up how many times you screech about the same old crap?

I can't believe you are allowed to keep littering here.

 

[ICIETDIYEUR]

@ howard416.

Hi.

For my part, I don't understand two things about you:

- Why are you against real, measurable, and therefore objective facts that can be verified by everyone ?

- Why should you stay here so as not to accept the exchanges or points of view of others without being in bad faith but above all rude and vulgar with the words you write ?

We are here on a forum that checks and shows characteristics concerning devices, not on a social network where people can have 'offbeat' thoughts and behaviors it seems to me...

I think you have gone to the wrong place.

Good luck to you.

 

[howard416]

@ howard416.

Hi.

For my part, I don't understand two things about you:

- Why are you against real, measurable, and therefore objective facts that can be verified by everyone ?

Post as many facts as you want, but it's the bias and spin that is revolting.

 

[ICIETDIYEUR]

Hello.

For my part, what disappoints me ('revolt' is a verb a little too 'strong') on a forum are the useless interventions of some people who are only based on a 'personal feeling':

it's not at all an attitude related to science, don't you think ?

Regards.

 

[Jimbob54]

Lots of pointless and largely off topic bickering going on in this thread . Pack it in or I'll be doing some pruning and thread banning .

Thanks