Ampapa x Douk Audio D1 is in Development and Need Your Advice!

[Douk Audio]

Hello all ASR friends,

The final version of D1 has been finalized and officially released last week.
It is a collaborative effort between Douk Audio and Ampapa. Building on the success of the Douk Audio A5 amplifier, the D1 takes performance and functionality to the next level with some impressive upgrades:
1. OLED display screen, supports 7 VU Meter modes and real-time status.
2. Bluetooth 5.2 and TRS balanced input.
3. Treble and bass control, 12V trigger input.
4. Remote control, default with 48V5A GaN power adapter
...

More details please click:
https://doukaudio.com/AMPAPA-D1
https://amzn.to/3I8E5G4

The above information was updated on September 19th.

Hello ASR members,

Hope all of you are doing well!

Last January, we exchanged product inspiration and design with Ampapa’s engineer and decided to design an amplifier product with a digital VU meter, HPF circuit and acrylic transparent top window which has been applied in the Douk Audio A5.

Since software design has always been our shortcoming, we studied and learned from many different digital displays on the market.

Finally, in January this year, we made significant progress. Among the many VU display modes, we chose a spectrum mode and six classic VU meter modes.

Below are the specifications of the D1:
Audio input: Bluetooth / Stereo RCA / TRS Balanced
Audio output: banana speaker jacks / PRE OUT
Amp chip: TPA3255
Frequency response range: 20Hz-20kHz (±1dB)
THD+N: 0.007%
SNR: ≥110dB
*The THD and SNR is not the final data.

Features
1. Top window design, easy to replace op amp
2. 6 types of digital VU meter display optional + spectrum
4. Add HPF filter
5. Built-in NJW1194 chip for treble and bass control
6. TPA3255 amp chip, with 48V5A power adapter
7. PFFB circuit
...

Recently, we are going to launch it but still worry about its TRS balanced input that won't be accepted by most audiophiles. Limited to its ultra compact space of the rear panel we cannot add the standard XLR balanced input there, so our PD is going to add an optional TRS to XLR cable, is this solution feasible?
Please leave your opinions below, any suggestions are welcome. Thank you!

Here are some pictures of the D1:

 

[MCH]

I don't think people here mind too much about the trs inputs, they might bark a bit at the NJW1194 and also at the +-1dB frequency response though.

 

[Audionaut]

our PD is going to add an optional TRS to XLR cable, is this solution feasible?

A very good idea that offers additional choice.

 

[melomane13]

HPF filter , 2nd order at least, after tone control
pre out, after volume & tone control, without hpf

 

[Sir Sanders Zingmore]

Super excited about being able to easily roll op-amps

 

[daniboun]

Below are the specifications of the G9:
Audio input: Bluetooth / Stereo RCA / TRS Balanced

Will LDAC be available on the menu since it has not been implemented on the A5 and A5 pro..... ?

 

[jmc06]

hpf is good！！

 

[Totemis]

@ Douk Audio​

Tone control is nice but don't forget left/right speaker channel adjustment please !
TPA3255 amp chip... one for each balanced channel ?
One Audio input with Spdif optical should be apreciate...
Do you have an idea when this Ampapa G9 will be available ?

 

[Scrivs]

Wow, free market research galore. ASR should be compensated for the platform on which said market research, gratis, is carried out on.

 

[ICIETDIYEUR]

Hi.

It seems like they took inspiration from someone else...

I think that for the sake of customers, all manufacturers should do this

These days, the internet and its many possibilities are so 'poorly exploited'

 

[jmc06]

Hello ASR members,

Hope all of you are doing well!

Last January, we exchanged product inspiration and design with Ampapa’s engineer and decided to design an amplifier product with a digital VU meter, HPF circuit and acrylic transparent top window which has been applied in the Douk Audio A5.

Since software design has always been our shortcoming, we studied and learned from many different digital displays on the market.

Finally, in January this year, we made significant progress. Among the many VU display modes, we chose a spectrum mode and six classic VU meter modes.

Below are the specifications of the G9:
Audio input: Bluetooth / Stereo RCA / TRS Balanced
Audio output: banana speaker jacks / PRE OUT
Amp chip: TPA3255
Frequency response range: 20Hz-20kHz (±1dB)
THD+N: 0.007%
SNR: ≥110dB
*The THD and SNR is not the final data.

Features
1. Top window design, easy to replace op amp
2. 6 types of digital VU meter display optional + spectrum
4. Add HPF filter
5. Built-in NJW1194 chip for treble and bass control
6. TPA3255 amp chip, with 48V5A power adapter
7. PFFB circuit
...

Recently, we are going to launch it but still worry about its TRS balanced input that won't be accepted by most audiophiles. Limited to its ultra compact space of the rear panel we cannot add the standard XLR balanced input there, so our PD is going to add an optional TRS to XLR cable, is this solution feasible?
Please leave your opinions below, any suggestions are welcome. Thank you!

Here are some pictures of the G9:
View attachment 453623
View attachment 453624
View attachment 453625
View attachment 453626View attachment 453627View attachment 453628View attachment 453629View attachment 453630View attachment 453631View attachment 453632

Shall we explain that bad HPF on the douk a5 first?

 

[Blair]

When does it go on sale?

 

[genkinaojii]

I want to display knobs for volume, bass, and treble.
I want to display three knobs on the screen.
I can just reuse the A1 design.
The knobs will move in conjunction with remote control operation.
The screen will automatically change when the remote control is operated.
It's a very simple solution that will free me from inconvenience.

 

[Douk Audio]

When does it go on sale?

Hi, thanks for your attention to the Ampapa x Douk Audio D1. It will be released next week, stay tuned.

 

[Douk Audio]

I want to display knobs for volume, bass, and treble.
I want to display three knobs on the screen.
I can just reuse the A1 design.
The knobs will move in conjunction with remote control operation.
The screen will automatically change when the remote control is operated.
It's a very simple solution that will free me from inconvenience.

View attachment 474660

Thanks for your suggestions! D1 will display the treble, bass, volume and input channel.

 

[genkinaojii]

Thanks for your suggestions! D1 will display the treble, bass, volume and input channel.
View attachment 474694

This is great!
You can see four pieces of information on one screen.
The font for the equalizer numbers is small, but I think it's within acceptable limits.

If you move even a little bit away from the amp, you can't see the bass and treble numbers.

 

[EJ3]

Wow, free market research galore. ASR should be compensated for the platform on which said market research, gratis, is carried out on.

I guess that some will always need some cheese with their w!ne, when others have found a way to make things better & more inexpensively.

Which seems to be the goal of ASR.

I'm guessing that if it did not align with ASR's goals & was a problem, it would most likely be stopped.

 

[Jimster480]

I guess that some will always need some cheese with their w!ne, when others have found a way to make things better & more inexpensively.

Which seems to be the goal of ASR.

I'm guessing that if it did not align with ASR's goals & was a problem, it would most likely be stopped.

I think this is the entire point of ASR.... to advance audio through science and collaboration.
This product also looks very nice. Even though I am not a person who specifically cares about VU meters; I think this is a very cool design and if the measurements match the claimed performance then it should be another great winner!

 

[EJ3]

I think this is the entire point of ASR.... to advance audio through science and collaboration.
This product also looks very nice. Even though I am not a person who specifically cares about VU meters; I think this is a very cool design and if the measurements match the claimed performance then it should be another great winner!

I have always liked VU/Watt meters, but I've rarely had them.
If all the other parameters were equally good, a good set of VU/Watt meters in the same general price range that I was looking into, could easily sway me into that direction.

 

[Douk Audio]

Hi, thanks to all attention to the D1.

We're excited to announce that D1 is now live. You can find most of the information in the following links

Ampapa D1 HIFI TPA3255 Amplifier with Digital VU Meter

Features Ampapa × Douk Audio Collaboration: Built on the acclaimed Douk Audio A5 amp, the D1 retains core features like TPA3255 chip, HPF, PRE-OUT, socketed op-amps—now upgraded with digital VU display, TRS balanced input, Bluetooth 5.2, treble/bass control, remote and more for next-gen HiFi...

doukaudio.com

If you have any questions, feel free to ask them here. We welcome your comments!