ES9038Pro: New ES9038Pro out !! HIFIME UDA38PRO DAC (ES9038PRO + SA9227) 219€

hi there !! 😉 ,
came by chance about this gem->HIFIME UDA38PRO DAC (ES9038PRO + SA9227) with an ES9038pro !!
just absolutely fresh out->yesterday or so->“HiFimeDIY:
07/02/2018, 07:06:32 AM
Hi everyone, it’s now available to order! https://hifimediy.com/uda38pro-usb-dac-es9038pro Some more data will be added to the description soon. We do have a few units available now, and more after Chinese New Year. And we managed to get the price down to 219€„..

 

https://hifimediy.com/uda38pro-usb-dac-es9038pro
„The Hifime UDA38Pro utilises the ESS Sabre ES9038Pro DAC chip that has received a lot of attention and praised as the most important new DAC chip in ages…We have paired the ES9038Pro with OPA1622 output stage amplifier that can drive a wide range of loads including low and high impedance headphones and also line level loads like preamps and amplifiers… it can achieve up to 140dB !! dynamic range, -122 dB (0.00008%) total harmonic distortion plus noise (THD+N) in mono mode

Specs: (to come..)

ES9038Q2M: „Project 2“->building a BT-controlled HW-Volume-control (digital pot 10kOhm) MCP4131

so, 😉
because its a little bit silent around here lately, we still don´t know if the „Blue“ ES9038Q2M has a „shitty“ pcb and the „green“-ones sounds better, i have still buffer/“lock“-problems in windows using the V4.36 Singxer-driver on the Skysong-XMOS-USB in sample rates above 16/44 i wanted to use the onboard-HW-volume control, to which u can connect a normal 10kOhm-potentiometer (see pictures) easy..

 


i tested it here, and it works far not so good as expected and i guess u have a very small range of about 20% or so (in my feel) too..
i thought i could easy use the Arduino with analogwrite () and connect one pin to the middle of the onboard-3 pin but what i´ve read so far is that the Arduino can only send out PWM-signals so u need an external digital potentiometer (thats what i´ve read so far, don´t know if its true) and control it via the (in this case) SPI-bus/protocol..
for this u can buy a cheap MCP, in this case a MCP4131 of around 0,89€ and a Dip-8 socket (0,51€) etc.,etc..(more to come..)


(very good tutorial for this right now:
http://www.learningaboutelectronics.com/Articles/MCP4131-digital-potentiometer-circuit.php)

i will post here any „improvements“ (and (maybe) a full tut) asap..!! 😉