Another project, all digital DDX amplifier

[udailey]

Dibs! I want one as soon as you can! Seriously.
Uriah

[hifimediy]

Just make all parts work today

[Tekko]

Whatz the lcd for ? Showing the volume setting and which input is active ?

What sample rates and formats does it accept on the digital input ?

[hifimediy]

Originally Posted by Tekko

Whatz the lcd for ? Showing the volume setting and which input is active ?

What sample rates and formats does it accept on the digital input ?

yes, I think lcd can display more infomation, but need more time to finish.
Optical and coaxial accept 96kHz/24bit and usb 48khz/16bit.

[hifimediy]

any idea to improve?

[jtjy]

Originally Posted by hifimediy

any idea to improve?

IMO blue LED would be nicer. Temperature abit reluctant.
Also which dac chip are u using?
My Idea would be something like this.


Time

USB/ Tor / Coa
24 bit - 92 khz

Volume : ||||||||||||||||||||||

[kc7wdg]

Sweet would love to test that thing out! I would run it 8+ hrs a day every day in place of another amp.

I like seeing the temp as I bet its showing temp near chips and in a case is a good thing to see.

[jtjy]

weird . my post came up wrongly. the USB and 24bit should be in the middle.

[hifimediy]

Originally Posted by jtjy

IMO blue LED would be nicer. Temperature abit reluctant.
Also which dac chip are u using?
My Idea would be something like this.


Time

USB/ Tor / Coa
24 bit - 92 khz

Volume : ||||||||||||||||||||||

Thanks for your suggestion.
We use sta320+STA50x as power DAC.
I will improve the lcd view. The LED is build-in so I can't change the color now, but I will use 2 different display later.

[hifimediy]

Originally Posted by kc7wdg

Sweet would love to test that thing out! I would run it 8+ hrs a day every day in place of another amp.

I like seeing the temp as I bet its showing temp near chips and in a case is a good thing to see.

The temperature sensor is included in MCU, so I just don't want to waste it.