Ampapa x Douk Audio G9 is in Development and Need Your Advice!

[Douk Audio]

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:

 

[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?