Want a TPA3255 Amplifier with a Built-in Power Supply? It is coming!

[Matt_Holland]

Who is we?
I would very much welcome these features that the amplifier has to offer. This makes it an integrated amplifier, not just a power amplifier.

We is me. But possibly lots of other potential customers. Apologies for the rather arrogant use of “we”.

What I don’t understand is these amps that are ostensibly power amps, but have some compromised additional inputs/controls/DSP that sort of make them integrated amps, just not very good ones. For example, if this Douk amp doesn’t have a remote control to adjust volume and input selection then it’s useless for non-desktop applications. It’s a similarly odd situation with the Wiim Vibelink.

 

[Guddu]

Is there really a customer demand for such simple tone controls? Surely EQ is a pre-amp function and most users will have a pre-amp and/or source with this.
Similarly, why is there a volume control?

Having volume control (and tone controls) is helpful for some or not for others, as long as a bypass is available then both the camps should be happy.
@Douk Audio mentioned NJW1194 in one of their response in this thread, which is a decent budget digital controller (with respectable noise/distortion stats) providing all these basic functions:
- Digital volume control, I would say its better than the potentiometers based volume control in many ways
- Input selector
- Bass & Treble

A bypass switch will make things right.

 

[Matt_Holland]

Having volume control (and tone controls) is helpful for some or not for others, as long as a bypass is available then both the camps should be happy.
@Douk Audio mentioned NJW1194 in one of their response in this thread, which is a decent budget digital controller (with respectable noise/distortion stats) providing all these basic functions:
- Digital volume control, I would say its better than the potentiometers based volume control in many ways
- Input selector
- Bass & Treble

A bypass switch will make things right.

That’s fair enough. But what about remote control?
I don’t think this is a desktop amp, so if it has integrated amp features it should have a remote control.

 

[Guddu]

That’s fair enough. But what about remote control?
I don’t think this is a desktop amp, so if it has integrated amp features it should have a remote control.

Agreed, a remote will be a useful addition indeed. It adds great comfort with functionality, and it does have to be super complicated like an AVR remote.
Not many would want to go to amplifier for manual adjustments like switching input/output, changing volume levels for different inputs if amplifier cannot remember that setting, etc.
Believe me or not, many products get ignored for not having a remote. Aiyima corrected it with A80 for good, WiiM realized it rather quickly and so as Arylic, Fosi learned it as well, and many more. Personally I think Arylic have a better designed remote, simple and effective.

@Douk Audio
Don't know if its too late or not feasible to consider a remote control but remote control is an unconscious deal breaker for larger audience.

P.S. Worst part it you don't realize it until you have it. I absolutely love Geshelli Labs DAC that I have but hate it every time I have to switch the input.

 

[Jimster480]

Yea honestly for me the Sub Out would be the biggest differentiator... but other than that... basically a remote would be a big thing (even if I don't need one because my DAC has a remote and preamp).

 

[Crook]

Not sure about other users but speakers and and subs out with filters would imo be better than a/b speaker outputs. I think you'll find more users with speakers/subs than 2 seperate sets of speakers.

 

[ICIETDIYEUR]

Hi 'DOUK'

To make an amplifier with excellent measurements and sufficient power for home use, you would need to use three TPA chips:
two TPA3251s in PBTL mode for the two stereo channels and one TPA3255 also in PBTL mode for the subwoofer channel.

The power supply should be 1200W, provided that these aren't peak watts...


You would also need to use an NJW1195 chip (not an NJW1194) to ensure fully balanced transmission of the corresponding inputs (XLR or TRS).


Finally, you would need to integrate a DSP circuit (or even better a PEQ in 'real time') to modify the signal levels and their cutoff frequencies to the respective TPAs

In terms of cost (not to mention development) we cannot offer such a device for 'only' 300 dollars:
I think that such a device would probably be offered for close to double that, provided that it is really well implemented and with good components...

 

[Guddu]

Hi 'DOUK'

To make an amplifier with excellent measurements and sufficient power for home use, you would need to use three TPA chips:
two TPA3251s in PBTL mode for the two stereo channels and one TPA3255 also in PBTL mode for the subwoofer channel.

The power supply should be 1200W, provided that these aren't peak watts...


You would also need to use an NJW1195 chip (not an NJW1194) to ensure fully balanced transmission of the corresponding inputs (XLR or TRS).


Finally, you would need to integrate a DSP circuit (or even better a PEQ in 'real time') to modify the signal levels and their cutoff frequencies to the respective TPAs

In terms of cost (not to mention development) we cannot offer such a device for 'only' 300 dollars:
I think that such a device would probably be offered for close to double that, provided that it is really well implemented and with good components...

Does it match with the idea in the original post, seems like not.
This one, if proceeds, is going to be more like an integrated stereo amplifier with multiple SE/balanced inputs.

 

[Jimster480]

Not sure about other users but speakers and and subs out with filters would imo be better than a/b speaker outputs. I think you'll find more users with speakers/subs than 2 seperate sets of speakers.

I agree. I have speakers and a subwoofer, but the subwoofer is not active. So I would need something with a sub out.
Right now I actually use both my XLR and my RCA channels out of my DAC so that I can feed my subwoofer and so I can feed my speakers. However, it would be better if my amplifier had a subwoofer out because then I could use the RCA channels to drive atmos speakers.

Hi 'DOUK'

To make an amplifier with excellent measurements and sufficient power for home use, you would need to use three TPA chips:
two TPA3251s in PBTL mode for the two stereo channels and one TPA3255 also in PBTL mode for the subwoofer channel.

The power supply should be 1200W, provided that these aren't peak watts...


You would also need to use an NJW1195 chip (not an NJW1194) to ensure fully balanced transmission of the corresponding inputs (XLR or TRS).


Finally, you would need to integrate a DSP circuit (or even better a PEQ in 'real time') to modify the signal levels and their cutoff frequencies to the respective TPAs

In terms of cost (not to mention development) we cannot offer such a device for 'only' 300 dollars:
I think that such a device would probably be offered for close to double that, provided that it is really well implemented and with good components...

Well, this definitely sounds interesting. I don't think it'd be exactly the same product as what they were talking about in the original post. So while something like this could definitely be made, I don't know if they would be building it, considering.

 

[ICIETDIYEUR]

Or maybe O-NOORUS ?

One day...
...the future will tell, perhaps

But it will be necessary to buy a lot of D3 PROs in order for Alexander Lin to get the necessary budget for such a device

 

[Guddu]

Or maybe O-NOORUS ?

One day...
...the future will tell, perhaps

But it will be necessary to buy a lot of D3 PROs in order for Alexander Lin to get the necessary budget for such a device

Absolutely, best wishes.

Now let’s use this thread back to support @Douk Audio.

 

[ICIETDIYEUR]

That's what I do: I support them by giving them ideas, even though they have already proven that they have plenty of them

 

[jmc06]

Equipped with hpf, it is convenient to assemble 2.1-channel

 

[pieterv1]

It’s a similarly odd situation with the Wiim Vibelink.

It's strange you say that. The function set/design as proposed by Douk Audio is exactly what I hoped the Vibelink to be:
- bypassable volume control
- vu meters are a nice touch
- no on-board DAC, analog input only

My next amp will either be this or the 3e Audio with built-in PSU they've been teasing for quite some time now.