Douk Audio Invite You to Create Another Amplifier with Both HPF and LPF together!!!

[cbracer]

Please start incorporating a sleep mode into your products. It has now become one of the features on my must have list.

 

[Vlad4444]

Hello all ASR members,

Last year, we got inspiration here and we released the A5 amplifier with a high pass filter based on all your opinions.

We are happy to let you know that it is very popular, it is your valuable opinions that made it available in such a short time. On behalf of the Douk Audio Team, we want to express our sincere thanks to all of you.

Now, we collect some ideas in the A5 thread and from some A5's users and decide to design another amplifier with both HPF and LPF. If you have any other suggestions please feel free to leave your ideas and we believe that your valuable opinions will help create another popular amplifier.

Here are some initial thoughts not determined yet.

1. Chips: TPA3255 or Module design (Purifi/NCore/Infineon)
2. Inputs: RCA and XLR
3. Outputs: speaker jacks and AUX or RCA (SUB or Full-frequency)
4. With volume control and support bypass
5. With a high pass filter to control (with scale value) the main speaker output
6. With a low frequency filter (with scale value) to control the main speaker output or AUX/RCA output
7. With 12V trigger input
8. With loudness adjustment
9. Internal or external power supply
10. What is the acceptable selling price?
11. The chassis may be bigger than all the TAP3255 amplifiers we sell now.
12. We may create the matched DAC/Preamp with this amplifier in the near future, any advice on them?

Thank you again! All suggestions are welcome!

Hello! The Douk Audio Ampapa D1 amplifier's needle-style meters are a very interesting idea. They're also very beautiful! I'd like to supplement them or replace the less interesting ones with a monochromatic green running meter like the Audiolab m-dac and a colored running power meter with colored LEDs like the stereo equipment of the 70s.I'd like the amplifier to have a full digital path with inputs: optical for connecting a computer, coaxial for connecting a CD player, and analog with RCA connectors.It would be better to increase the amplifier's size. Hi-Fi equipment is the most attractive part of the interior, and the toy-sized box isn't suitable. It's better to place the power supply in the main enclosure.A transparent backlit cover is unnecessary. It's not a toy. A small amplifier is only suitable for computer desktop speakers. A miniature amplifier won't be able to fully realize the benefits of beautiful needle-style meters. I wish you to revive the wonderful spirit of stereo equipment of the 70s, incorporating the latest achievements in sound reproduction electronics.

 

[ICIETDIYEUR]

Maybe a very next one O-NOORUS D4 Pro...

 

[EJ3]

Are you looking for feedback on the A5 that might be useful for the new model? If so, here are my subjective impressions of the A5.

• The loose window (sans sticker) seems like a hazard to me since it isn’t secured. It should have a friction hinge or some other means to stay attached and closed when installed. AFAIK, there is no precedent in other brands for a loose compartment door.

'No precedent': makes it a unique feature (for me, a great selling point). Making it friction hinged ads expense. Perhaps a dab of clear silicone for you to DYI if it bother's you so much.
I think that for your own piece of mind and both mental & physical health, you shouldn't buy things that stress you out so much.

 

[EJ3]

Please start incorporating a sleep mode into your products. It has now become one of the features on my must have list.

Why?
Do you use everything running on batteries, installed in a vehicle or something?
Also, an extra engineering & manufacturing expense, making the price higher than it needs to be, going against the grain of having an inexpensive piece of gear.

 

[eddantes]

Stripped down 200w stereo amp. Only a power switch n power LED. High SINAD. Give Topping a run for their money.

Team it with a DSP enabled streamer that gives WiiM a run for their money.

I you want to get fancy - make the amp auto sense the signal for on/off or add trigger.

 

[EJ3]

Stripped down 200w stereo amp. Only a power switch n power LED. High SINAD. Give Topping a run for their money.

Team it with a DSP enabled streamer that gives WiiM a run for their money.

I you want to get fancy - make the amp auto sense the signal for on/off or add trigger.

I don't mind paying a little bit extra for features that I want and/or deem needed (and I have things that have this feature) but I have no want or need of it.
My post is just to remind folks that added features (perhaps when desires become "needs") cost money, possibly taking the item out of the 'inexpensive' category.

 

[PoorAudioGuy]

About the price, make sure your Amp + preamp/DAC will be well below WiiM Amp Ultra. Because that product is all of that plus streaming, room correction and Multiroom software

 

[effj]

'No precedent': makes it a unique feature (for me, a great selling point).

The feature itself (the clear, removable window) might be unique, but the fact that it’s loose makes it half-baked. Are you saying you like products that have loose covers, specifically? I can’t imagine most people would consider the complete detachment a feature.

Making it friction hinged ads expense.

Cutting out a hole and adding a window adds expense. What’s your point?

Perhaps a dab of clear silicone for you to DYI if it bother's you so much.

I used Scotch tape actually. Quite hideous.

I think that for your own piece of mind and both mental & physical health, you shouldn't buy things that stress you out so much.

Where did you ascertain that it stresses me out? That’s incorrect. Douk asked for product feature suggestions and I gave one by using one of their existing products as an example. Which by the way, Douk is the one who warns owners to keep it closed and not to tinker in there when the unit is operating. I’m just saying, either make it safe for removal during operation, or secure the darn thing a little.

 

[EJ3]

The feature itself (the clear, removable window) might be unique, but the fact that it’s loose makes it half-baked. Are you saying you like products that have loose covers, specifically? I can’t imagine most people would consider the complete detachment a feature.

Cutting out a hole and adding a window adds expense. What’s your point?

I used Scotch tape actually. Quite hideous.

Where did you ascertain that it stresses me out? That’s incorrect. Douk asked for product feature suggestions and I gave one by using one of their existing products as an example. Which by the way, Douk is the one who warns owners to keep it closed and not to tinker in there when the unit is operating. I’m just saying, either make it safe for removal during operation, or secure the darn thing a little.

What is wrong with complete detachment? That is a great feature. Yes, cutting a hole & adding the feature of a removeable window adds expense.
Then making that window non-removable adds more expense (and defeats the benefits of having a removable window [which, presumably, you have no desire to have].
Therefore you are advocating for a non-removable window, I guess (personally, I do not care whether it is removable or not {although I kind of like the idea that it is readily removable, without tools, just to have something different}).

What is your problem with it?
Do you have pets, or children that may remove it either accidentally or intentionally while it is in use? Are you prone to losing things (such as the nice, clear lid)?
Or maybe you are thinking about sticking your fingers into live circuits (after you some how unintentionally had the lid come off)?
If so, that is not the manufacturers problem.
Since you give no explanation of what you believe that the hazard is & why:
That is your problem for buying it if you think that it is an issue for you or your family.
You are the one complaining about it:
That indicates that to me that something about it stresses you. Or you wouldn't be complaining about it.
There are many other ways to secure something than a way that you consider hideous.
Maybe try thinking of one that works for you.
As to buying something that (in your mind) has a problem (even though that feature/problem) is fully explained & the things NOT to do are right there in the paperwork (which I think would be self-explanatory even without anything or anyone explaining it):
It just befuddles me as to why you would have knowingly purchased an item with a feature that, for you, is a detriment.

 

[effj]

What is wrong with complete detachment? That is a great feature. Yes, cutting a hole & adding the feature of a removeable window adds expense.
Then making that window non-removable adds more expense (and defeats the benefits of having a removable window [which, presumably, you have no desire to have].
Therefore you are advocating for a non-removable window, I guess (personally, I do not care whether it is removable or not {although I kind of like the idea that it is readily removable, without tools, just to have something different}).

What is your problem with it?
Do you have pets, or children that may remove it either accidentally or intentionally while it is in use? Are you prone to losing things (such as the nice, clear lid)?
Or maybe you are thinking about sticking your fingers into live circuits (after you some how unintentionally had the lid come off)?
If so, that is not the manufacturers problem.
Since you give no explanation of what you believe that the hazard is & why:
That is your problem for buying it if you think that it is an issue for you or your family.
You are the one complaining about it:
That indicates that to me that something about it stresses you. Or you wouldn't be complaining about it.
There are many other ways to secure something than a way that you consider hideous.
Maybe try thinking of one that works for you.
As to buying something that (in your mind) has a problem (even though that feature/problem) is fully explained & the things NOT to do are right there in the paperwork (which I think would be self-explanatory even without anything or anyone explaining it):
It just befuddles me as to why you would have knowingly purchased an item with a feature that, for you, is a detriment.

It’s really odd that you are talking to me like this. Do think the product is perfect and unimpeachable or something? There is no reason to come after me directly for speaking up about one of their product features that I think is poorly implemented. I am fine with the window itself, but think it would’ve been wise to make it attachable/detachable somehow. There are several options for Douk to do that, and they are all better than DIY options. It’s poor design, and I’m not apologizing for speaking up about it.

 

[EJ3]

It’s really odd that you are talking to me like this. Do think the product is perfect and unimpeachable or something? There is no reason to come after me directly for speaking up about one of their product features that I think is poorly implemented. I am fine with the window itself, but think it would’ve been wise to make it attachable/detachable somehow. There are several options for Douk to do that, and they are all better than DIY options. It’s poor design, and I’m not apologizing for speaking up about it.

That is fine, that you think that it is a poor design. I do not own one, as I have 6 of one type of amplifiers and 2 of another type of amplifiers that meets my needs.
I personally would like to have a clear top (or window in the top (attached or not), just so I could enjoy the architecture of the cool way mine are arrange with such precision inside (as if someone where going to be examining them for neatness).
I am just trying to figure out the why have you kept it despite having an issue with the way something about it is implicated.
Are other things with it so great that it minimizes your issue with it?
For me, if I had any issue with an amp, I would have returned it, letting them know what my issue with it is. And I would have bought something else, either from them or someone else that did not have the issue that bothered me.
I feel that there is some reason that you kept it (in spite of the issue that you feel could have been done better) vs getting a different unit.
And would like to know what thing(s) about it caused you to keep it instead of returning it.

 

[effj]

That is fine, that you think that it is a poor design. I do not own one, as I have 6 of one type of amplifiers and 2 of another type of amplifiers that meets my needs.
I personally would like to have a clear top (or window in the top (attached or not), just so I could enjoy the architecture of the cool way mine are arrange with such precision inside (as if someone where going to be examining them for neatness).
I am just trying to figure out the why have you kept it despite having an issue with the way something about it is implicated.
Are other things with it so great that it minimizes your issue with it?
For me, if I had any issue with an amp, I would have returned it, letting them know what my issue with it is. And I would have bought something else, either from them or someone else that did not have the issue that bothered me.
I feel that there is some reason that you kept it (in spite of the issue that you feel could have been done better) vs getting a different unit.
And would like to know what thing(s) about it caused you to keep it instead of returning it.

It’s an excellent budget amp, and there are lots of reasons why I never even considered returning it. It’s tiny, lightweight, attractive and stylish, sufficiently powerful (sounds just as good as my other amps), measured well by Amir, and cost me only $70. The reason I wanted it in the first place was the high-pass filter and volume-controlled subwoofer output; a killer feature combination, as far as I’m concerned.

 

[EJ3]

It’s an excellent budget amp, and there are lots of reasons why I never even considered returning it. It’s tiny, lightweight, attractive and stylish, sufficiently powerful (sounds just as good as my other amps), measured well by Amir, and cost me only $70. The reason I wanted it in the first place was the high-pass filter and volume-controlled subwoofer output; a killer feature combination, as far as I’m concerned.

I did not look into it deeply enough to realize it has a high pass filter. For me, that would be a big +.
I find that I have the need for much more power (my system is tri amped (one in stereo for the 2 main L & R & 1 bridged mono amp for each sub). I have been using an external filtering/Xover (pre out L & R with sub high pass at 65 Hz & Lo pass at 50 Hz. (summed to mono [I would like to have the capability of changing between summed to mono and stereo bass easily] max sub FR is 20Hz-80Hz): the mains are +-2DB 26 Hz-20 KHz (with no EQ of any type).
After Jan, I'll be taking a deep dive into the miniDSD FLEX (or possibly some other miniDSD products to see if I can use it to get rid of my analog Xovers, have steeper Xovers & run switchable stereo & mono bass.