DIY Bluetooh headphone hybrid tubeamp Support LDAC APTX HD + PS "Battery LIPO4s"

music by request " Winterplay " from sportify.
On the basic board from SQ867 kit with Es9018q2m dac and preamp out used 12AU7.
Many parts i have add and replaced.

I was added 2X voltage regulator LM 2596 for fixed at 13Vdc, because i used Lipo 4s battery, it was not fixed supply.

And upgrade of the capacitors for replacement.

And the final out i used the cmoy board for increase the gain , but it not enough full power but better than no used it.

The Power Supply use 2X Battery Lipo4s, for separate PS. it not accepted on single PS becauae on the cmoy board have virtual ground chips, TLE2426 Rail splitter.
Resume:
It 's the BT 5.0 supported Bluetooth LDAC aptx high definition, and i heard so very clear and detail the sound but have agood lower too , it is better than begining..

Видео DIY Bluetooh headphone hybrid tubeamp Support LDAC APTX HD + PS "Battery LIPO4s" канала edSuwan DiyAudiophile