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

[BlueGuerrilla]

The price difference between A5 and D1 is too big.
I'd like you to put only 12V TRIGER in A5 and give me an upgraded model.

 

[genkinaojii]

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.

I also think that left and right level adjustment is necessary.

The original H7 was the best!
The independent left and right volume controls were great!

 

[raif71]

Hopefully Douk has a similar amp like this but for headphone usage with xlr and rca at the back. Headphone in with 4 pin xlr and/or 4.4mm balanced and 6.35mm single side.

 

[EJ3]

I also think that left and right level adjustment is necessary.

The original H7 was the best!
The independent left and right volume controls were great!

@Totemis (and others) are correct: Because many peoples speakers are not in the position of being perfectly a mirror image of each other in referance to their location in the listening room (due to the vageries of home build, furniture locations, partener acceptance of said locations and 1000's & 1000's of other vageries of speaker location, in something that is to be used as a pre-amp or an integrated amp (pre-amp + amp), not having a balance control is an absolute no go. (despite of all the other wonderful features).
Perhaps in the future.

 

[Schlippwhip68]

Has anyone found a way of switching off the display on the D1?

I have on here but can’t seem to find a way of switching the screen off.

Arrived with the ‘fluffy sound’ of the Ti NE5532 op amps. So whipped those out and stuck in the not so fluffy opa828 and fed it from my Fosi Audio P4 with opa1656 in there and boom!
No it didn’t explode, it arrived at instrumental precision and clarity without a hint of fluff!

Very nice. Now, that screen is great but the option for a 10 second switch off would be good. Someone said look for an ‘A4’ setting to do this but I cannot find one myself.

 

[Schlippwhip68]

Very nice small amp. Well built. Looks good. Had it here a couple of hours now. I whipped out the NE5532 op amps and went through a variety and they all sound good.
I like a more precise sound so I stuck with the opa828 in the D1. The sound is accurate, distinct leading edges on the notes, excellent bass, great clarity, no fuzzy sounds at all.

I also experimented with the Fosi Audio P4 as a pre amp which has the opa1656 in place of the NE5532. It complimented the opa828 in the D1 perfectly adding a little more width and depth to the soundstage.

Bluetooth is very good, especially with the opa828 as it’s a super clean sounding op amp, virtually transparent adding no colour to the sound so Bluetooth is coming through very, very clear, even in AAC from the iPhone.

Great little amp.

 

[ICIETDIYEUR]

Hello.

We are all happy for you that you hear a difference by performing an 'Op-Amp Rolling' although Amir has shown that it does not add anything to the measurements...

... That said, it's important not to write anything since it's going to be read by the readers:
you cannot replace an OP-Amp NE5532 which is a 'double' Op-Amp with an OP-Amp OPA828 since it is a 'single' Op-Amp in its case.

By doing this, the device will not work, will create a loud 'noise' or at worst will be destroyed depending on the implementation of these circuits !

The TI Op-Amp which is a 'dual' version of the OP-Amp OPA828 is the OPA2828, which was important to clarify.

I won't go into the details of the circuit but the device must be 'studied' to work with the NE5532: you can't change an Op-Amp 'at the moment' just because you've read about it on the forums or whatever, it's important to know the circuits and their functions.

To do this correctly in order to, perhaps, improve your device to measurements, you need to have knowledge that you obviously don't have otherwise you wouldn't have written all this down insisting with two repetitive messages, but maybe you're an Op-Amp reseller?

In which case it's even worse since you're writing nonsense, without 'particular' knowledge and in contempt of users who will lose their warranty by opening their device and maybe destroy it as well!

That said, I don't know you, I have nothing against you, but I thought it was important to keep readers informed.

Have a nice day.