Douk Audio G7 is Coming! TPA3255 Amplifier with a Built-in Power Supply!

[Saponetto]

Have to say, I was expecting something similar from Aiyima.
This device diverges noticeably from the recent rounded Fosi style, so I had some difficult on promptly recognize it as one of their products.

Anyway, it's a smart POV on the "amplifier affair" and I could be one of their potentially interested customers.

 

[UA8890]

The power supply has been simplified by removing the filter. There are two TPA3255 chips inside.

 

[UA8890]

Power supply. There are questions about the quality and longevity of the capacitors.And the absence of components in place of the filter.

 

[tineared]

For anyone interested in this amp, Douk Audio Direct is currently selling it via Amazon for $299

Amazon.com: DoukAudio 600W 2/4 Channel Amp: 3-IN-2-OUT Speaker Selector | Digital Amplifier for DMP-A6 with Dual TPA3255 | Balanced XLR RCA Inputs | Tone Bypass | VU Meters | Remote for Home Theater Speakers (G7) : Electronics

Amazon.com: DoukAudio 600W 2/4 Channel Amp: 3-IN-2-OUT Speaker Selector | Digital Amplifier for DMP-A6 with Dual TPA3255 | Balanced XLR RCA Inputs | Tone Bypass | VU Meters | Remote for Home Theater Speakers (G7) : Electronics

www.amazon.com

 

[Batmobil3250]

PFFB have become selling point for good reason, should be on product page in big bold letters.
If it has almost flat frequency response like Douk A5 then thats another point to highlight on front.

But it seems not to be as flat as the A5. I use A5 ion my electrostats instead of a Fosi ZA3. Big difference.

 

[Batmobil3250]

The use of two TPA3255s with two channels and the resulting load stability of up to 2 ohms would have been the most important feature of this amplifier for me personally.
Why didn't you make this switchable so that you can switch between 2 and 4 channel operation?

Exactly. Just my thoughts aswell. I had hoped it would be so each TPA3255 was coupled in a sort of floating balancdd mode and by have plus/minus 48volt supply where the circuit could deliver a total of 20 ampere. Because the market need an affordable amp that can handle low impedances. I use the A5 on my electrostats because the PFFB tame the frequency response. I use the 48v/5a supply. Consider to add a 48v/10a, add more capacity and use a very short cable with higher gauge. But still a balanced TPA3255 pr. channel each with 48v/10a would be a hit. Sp Douk what do you say? Is it possible to couple up the 3255 like this. Could it be an potential upgrafe?

 

[Audionaut]

 

[Jimster480]

Is there a way to update the firmware? If so can we get a firmware where I can turn off the lights on the VU Meters? They are very bright for movie nights, I have to go and set something in front of the amp so it doesn't blind us while we are watching movies.

 

[Douk Audio]

Is there a way to update the firmware? If so can we get a firmware where I can turn off the lights on the VU Meters? They are very bright for movie nights, I have to go and set something in front of the amp so it doesn't blind us while we are watching movies.

Hi, I've just confirmed that the G7 doesn't support firmware to update, and the backlight of the VU meters cannot be turned off...

 

[truth_soldier]

Hi, I've just confirmed that the G7 doesn't support firmware to update, and the backlight of the VU meters cannot be turned off...

well I bet some DIY guy will figure out what wire or trace can be cut to turn it off (permanently).

 

[truth_soldier]

Is there a way to update the firmware? If so can we get a firmware where I can turn off the lights on the VU Meters? They are very bright for movie nights, I have to go and set something in front of the amp so it doesn't blind us while we are watching movies.

you could use some kind of translucent (semi-transparent) tape or lightly spray paint over the plastic covers to lower the brightness. Paint is more work and irreversible but prob would look better. Maybe sanding the clear plastic with fine sandpaper would do similar.

 

[john61ct]

dot of nail polish on a Qtip ?

 

[Jimster480]

well I bet some DIY guy will figure out what wire or trace can be cut to turn it off (permanently).

If I knew the wire maybe I could just open it and add a switch. It's definitely an oversight when the meters are so bright.

you could use some kind of translucent (semi-transparent) tape or lightly spray paint over the plastic covers to lower the brightness. Paint is more work and irreversible but prob would look better. Maybe sanding the clear plastic with fine sandpaper would do similar.

Some kind of tint? I could look, but that would be all the time. In the daytime it's not overly bright, but at night it is blinding if the room is totally dark for a movie.

 

[MCH]

By the looks of it, seem those encapsulated meters that don't give access to the inside, so paint might not be am option. But most probably they have the wires that power the LEDs exposed, like in this example that could very well be a very similar model (black wires):

 

[Jimster480]

By the looks of it, seem those encapsulated meters that don't give access to the inside, so paint might not be am option. But most probably they have the wires that power the LEDs exposed, like in this example that could very well be a very similar model (black wires):

View attachment 539284

Yep, maybe in the future I will open it up.
I considered putting it away for now because of the meters brightness, and I will use it again when I get my atmos speakers for the tops of my floorstanders. Right now I am only using 2 of the 4 channels this amp has.

 

[EJ3]

you could use some kind of translucent (semi-transparent) tape or lightly spray paint over the plastic covers to lower the brightness. Paint is more work and irreversible but prob would look better. Maybe sanding the clear plastic with fine sandpaper would do similar.

There exists spray tint. (Unless it has been banned since I last used it). The more passes you make with it, the darker the tint gets.

 

[john61ct]

An ordinary single hole punch, black electrical tape.

If not wishing to completely cover, a tiny hole (Xacto "X"?) in its center

 

[Jimster480]

An ordinary single hole punch, black electrical tape.

If not wishing to completely cover, a tiny hole (Xacto "X"?) in its center

What is this for?

 

[antcollinet]

What is this for?

Creating a circle of black tape to cover an LED? Probably not that useful for an entire display

 

[EJ3]

you could use some kind of translucent (semi-transparent) tape or lightly spray paint over the plastic covers to lower the brightness. Paint is more work and irreversible but prob would look better. Maybe sanding the clear plastic with fine sandpaper would do similar.

Just use a piece of the varying shades of automotive window tint (then it's removable and you could try different levels of tint).
It seemingly seems not particularly complex to do. Maybe I just don't understand the complexity involved in this.