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

[melomane13]

@Douk Audio , please send a sample to @amirm for test.

 

[Totemis]

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!

@Douk Audio Good news ! congratulation ! i read your specs on your website (impressiv), But why you don't implement a right and left speakers level adjustment ? Why ?

 

[Hellboy.]

@Douk Audio If the remote control breaks, all the settings can be changed with the knob?

 

[Archguy]

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!

This may be a naïve question, but using the PRE OUT doesn't disable the power section and its speaker terminals does it? Since it's advertised as "Engineered for True 2.1 Systems" I'm probably worried about nothing but otherwise I need to cancel the order I placed yesterday! I intend on connecting a sub, naturally.

Meanwhile my A5 arrived today (very quickly I might add) as well as some powered speakers for another system so I may be up late this evening. "Pig in slops" is how a friend put it.

 

[mhardy6647]

Super excited about being able to easily roll op-amps

awesome!
Gotta be pin compatible with these, though...

EDIT: 30May... dang. Missed my window of opportunity!

 

[pickyAudiophile]

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

Agreed, either LDAC or aptX Adaptive would have been nice to see implemented, now, in late 2025. I like the display, rest seems like one more sidestep... Low-noise-no-tone-control NJW1195A instead of NJW1194 implemented (see older SMSL SA400 e/g for reference) would have been a standout feature, too.
LDAC is still my preference, too, since I don't have experience with aptX Adaptive right now.
LDAC has it's downsides, especially at 990 kbps when it eats up almost all of the bandwith available, with other BT connected devices like keyboards, mice, standalone volume controls, remaining almost like unresponsive "at the sidelines" in a Windows 11 environment with that A2DP driver in use streaming at that maximum rate of 990 kbps.
This should not be the case with aptX Adaptive when forced into 24 bits and 420 kbps transmitting, surpassing 660 kbps LDAC as claimed.

 

[daniboun]

Agreed, either LDAC or aptX Adaptive would have been nice to see implemented, now, in late 2025. I like the display, rest seems like one more sidestep... Low-noise-no-tone-control NJW1195A instead of NJW1194 implemented (see older SMSL SA400 e/g for reference) would have been a standout feature, too.
LDAC is still my preference, too, since I don't have experience with aptX Adaptive right now.
LDAC has it's downsides, especially at 990 kbps when it eats up almost all of the bandwith available, with other BT connected devices like keyboards, mice, standalone volume controls, remaining almost like unresponsive "at the sidelines" in a Windows 11 environment with that A2DP driver in use streaming at that maximum rate of 990 kbps.
This should not be the case with aptX Adaptive when forced into 24 bits and 420 kbps transmitting, surpassing 660 kbps LDAC as claimed.

As per measurements, LDAC vs AAC vs SBC (source : link here)

 

[Douk Audio]

@Douk Audio , please send a sample to @amirm for test.

Hi, thanks for your advice. In fact, if Amir is willing, we would be happy to provide him with any product to test. I will email him later to see if he is interested.

 

[Douk Audio]

@Douk Audio If the remote control breaks, all the settings can be changed with the knob?

Hi, except for the Bluetooth reset function, which can only be performed via the remote control, all other operations can be performed via the knob.

 

[Douk Audio]

@Douk Audio Good news ! congratulation ! i read your specs on your website (impressiv), But why you don't implement a right and left speakers level adjustment ? Why ?

Hi, thanks for your comment on the D1. For the left and right level adjustment, our previous H7 had this feature, but because it used a potentiometer, there could be inconsistencies, and very few users reported taht they need this function, so we didn't consider adding it. Is this function important? D1 is adjusted by an encoder, so it's not difficult to implement.

 

[Douk Audio]

This may be a naïve question, but using the PRE OUT doesn't disable the power section and its speaker terminals does it? Since it's advertised as "Engineered for True 2.1 Systems" I'm probably worried about nothing but otherwise I need to cancel the order I placed yesterday! I intend on connecting a sub, naturally.

Meanwhile my A5 arrived today (very quickly I might add) as well as some powered speakers for another system so I may be up late this evening. "Pig in slops" is how a friend put it.

Hi, thanks for your trust and support. The pre-out works simultaneously with the speaker output, so you can filter out the bass of the main speaker through the HPF, and then connect the active subwoofer through the pre-out to build a true 2.1 channel system.

 

[daniboun]

@Douk Audio

I think there are quite a few inconsistencies that need to be addressed... Don't forget that the competition is fierce, especially with the latest O Noorus D3 Pro, which is incredibly comprehensive.

You say, and I quote: "engineered for true 2.1 systems"? What about the LFE sub output?

• Ampapa × Douk Audio Collaboration
• Digital VU Meters with Retro Soul
• Engineered for True 2.1 Systems
• Premium Components for Superior Fidelity
• Engineered for Everyday Convenience

Are you really planning to add LDAC? You're announcing it in haste :

 

[Schlippwhip68]

This may be a naïve question, but using the PRE OUT doesn't disable the power section and its speaker terminals does it? Since it's advertised as "Engineered for True 2.1 Systems" I'm probably worried about nothing but otherwise I need to cancel the order I placed yesterday! I intend on connecting a sub, naturally.

Meanwhile my A5 arrived today (very quickly I might add) as well as some powered speakers for another system so I may be up late this evening. "Pig in slops" is how a friend put it.

Excellent little amp the A5. I use the SX52B op amps in that one with a Fosi Audio DC Power Filter on the power brick and my Q Acoustics 3020i reveal plenty of good, clean detail.

 

[gentlejax]

Single preout ?

 

[Schlippwhip68]

I like the look of this one, the D1. In collaboration with Amapapa and after owning the A1 which I thoroughly enjoyed aesthetically and sonically I think the D1 is going to be a very decent little amp and it’s built on the A5 structure which is already a great little amp that measured very well here on ASR.
I have my A5 playing today and I just cannot fault it. I do recommend using the Fosi Audio DC Power Filter with the A5. It cleans the power going into the A5 and the higher frequencies benefit with more clarity, cleaner notes.
It would be interesting to find out exactly what input Ampapa have towards the D1, not a lot of info on that at present….might just the support in adding more premium parts over the A5…

 

[Ismapics]

From the manual I found this,

 

[MMilan]

@Douk Audio


Hey Douk-Team! I have ordered an Ampapa Douk D1 amplifier. Super excited about it!

The default power supply is 48V 5A. I am considering upgrading to a 48V 10A power supply to increase the amplifier’s output power. Can the TPA3255 chip handle the higher current from a 48V 10A power supply safely without risk of damage? What numbers may I expect?

Also, how does the amplifier perform with a 2 ohm load?

Has anyone tested this configuration and what are the practical effects on power output, performance, and reliability? Thanks for your insights!

 

[Douk Audio]

@Douk Audio


Hey Douk-Team! I have ordered an Ampapa Douk D1 amplifier. Super excited about it!

The default power supply is 48V 5A. I am considering upgrading to a 48V 10A power supply to increase the amplifier’s output power. Can the TPA3255 chip handle the higher current from a 48V 10A power supply safely without risk of damage? What numbers may I expect?

Also, how does the amplifier perform with a 2 ohm load?

Has anyone tested this configuration and what are the practical effects on power output, performance, and reliability? Thanks for your insights!

Hi, thanks for your support to our D1.

Yeah, you can use 48V10A power supply, but the temperature of the outer case will be higher if the output is high.

D1 uses TPA3255 chip which works in BTL stereo mode and snd suitable for 4-8 ohm load, it doesn't recommend performing it at 2 ohm.

 

[celstark]

The variable high pass on the main out is great, but the min is 30 Hz. Can it be disabled? If so, how?

 

[Ismapics]

Credit to Dereck from Williston Audio Labs Channel on the Amp Dyno Test. It seems a good implementation fo the 3255 extracting good power from it.