Douk Audio A7 Multi-channel Amplifier - Looking for Your Input.

[Douk Audio]

Hi all members here,

Many of you are using amplifiers for home theater and TV audio setups. We've received numerous requests from customers asking for an amplifier with HDMI-ARC input. Based on that feedback, our engineering team has designed the Douk Audio A7, a fully-featured multi-channel amplifier.

Here are the basic specs:
Inputs: XLR (balanced), Bluetooth, RCA, HDMI-ARC
Outputs: Speaker outputs, SUB output
Power input: Dual DC 24V–48V
Chipset: TPA3255 ×2, QCC304X, NE5532

Key features:
Flexible channel configuration – can be set as 4.0, 3.0, 2.0, 2.1, 1.1, 1.2, or 2.2 depending on your needs.

Dual DC input support – if one power supply is insufficient, you can use two power inputs.

LPF potentiometer with on/off switch – when switched ON, OUT2 function as subwoofer outputs; when OFF, OUT2 become full-range outputs.

Three power-on modes – one fixed "always on" mode, and one trigger-signal power-on mode.

LPF switch – when ON, the unit operates in 2.1, 1.1, 1.2, 2.2 modes; when OFF, operates in 4.0, 3.0, 2.0 modes.

We are currently considering the subwoofer LPF (low-pass filter) and HPF (high-pass filter) frequency ranges.
Would 20–200 Hz and 20–300 Hz be reasonable choices?

Do you have any suggestions on better frequency ranges for home theater and music use cases?

Also, any other thoughts or feature suggestions for the A7 are very welcome.

Thank you for your input!

 

[Redacted]

The filter controls for sub and mains are good, especially if users are not running subs that have their own volume and XO point controls - but surely these are the minority of sub sales?

Many of us like to run two subs, so with amps that have only one sub-out port, we tend to use the pre-outs ports instead. So .... A good feature would be to have L & R sub-out ports, and a means of switching one to be mono (for those with a single sub).

Also with an ARC HDMI input, you should be clear that CEC is fully supported (or not).

 

[anonyless]

i think you should reconsider the product's name, as 3e audio A7 is basically using the same amp. chip with an external power supply

 

[Douk Audio]

i think you should reconsider the product's name, as 3e audio A7 is basically using the same amp. chip with an external power supply

This is indeed a point that needs to be addressed, and I've given that feedback to our PD.

 

[Redacted]

There's a product idea here, for fans of tubes, or vinyl or historical kit.
If you extrapolate the concept to just audio, for the processing power of a Pi (other SOC boards are available) you can get the sound some people crave, simply add 1000% markup, and you're golden!

Blockbuster new Raspberry Pi project turns any screen into old-school VCR

Who needs fancy menus and high definition? 240-MP will play your media files like it's 1999

www.theregister.com

 

[Moti]

A good feature would be to have L & R sub-out ports, and a means of switching one to be mono (for those with a single sub).

And pre-out, if RCA will not fit, please add 3.5mm mini-plug.

 

[MCH]

But, how can it be 4.0 if there are only stereo inputs? One needs to use the 2 balanced + 2 RCA simultaneously for 4.0??

 

[Redacted]

But, how can it be 4.0 if there are only stereo inputs? One needs to use the 2 balanced + 2 RCA simultaneously for 4.0??

Four speakers can be connected, if you look on the rear panel. I assume 2x TPA3255s can output to 4 channels....

 

[MCH]

Four speakers can be connected, if you look on the rear panel. I assume 2x TPA3255s can output to 4 channels....

I am talking about the inputs

 

[Redacted]

I am talking about the inputs

All he wrote was "Flexible channel configuration – can be set as 4.0, 3.0, 2.0, 2.1, 1.1, 1.2, or 2.2 depending on your needs." - which I assumed meant output in the absence of more detail...

Lets' see what the OP says...