Motorized Volume Module / TDA1543 USB DAC

[yangsmm]

Motorized Volume Module

I'd like to introduce the motorized volume module.
It controlled by remot-controller and it supply the relay circuit for external power on/off.
The detailed explaination is shown on the below site.
www.digi-hifi.com

 

[yangsmm]

Tda1543 Dac with USB

I made this mtda1543 dac. This can accept usb and digital audio input. It is designed with eight of tda1543.
I found there were a few tda1543 da converter on the web. But I didn't found any module, which accept digital audio input and usb together. That's why I design this module.

Dimensions are 170 x 116 mm

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DIgi-Hifi

 

[yangsmm]

Simple and Powerful LM3886 Power amplifier module.
Attached file show it.

if it didn't show. then

visit this site.
http://www.digi-hifi.com/?pt=pview&st=local&pc=product&no=26

 

[yangsmm]

My LM3886 Power Amp Module

I designed LM3886 Power Amplifiers.
This power amp are in dual and the Watt is depends on the input power voltage.
8Ohm based, then 50watt need +/-35Voltate(dc).
Used capacitors are silver mica,wima etc.

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digi-hifi

 

[yangsmm]

My LM3886 Power Module

Simple and Powerful LM3886 Power amplifier module.
Attached file show it.

 

[oxoxbyx]

nice product....

 

[Groundloops]

What I can´t figure are the prices shown: For example let´s take the MVOL-300 remote controlled pot. On digihobby.co.kr the price is 98.000 Won = 78,34 USD (most current exchange rate). On digi-hifi.com the same is for 103,00 USD. Extra charge for customers from abroad?