New here and looking forward to finishing my first build. I want to have a ES9023 dac and found this
Does anyone have experience with these boards? Do they come with oscillators? If not, can you recommend an inexpensive but decent oscillator to go with it? Thanks!
I’ve got this board. It runs out of the box by selecting hifiberry driver. No need external oscillator. It sounds good for the price !
But no hardware volume control.
Thank you sir! That is exactly the kind of info I am looking for! I am gonna try it out as it only costs about the same as two burgers.
One more question for you sir, I see it needs to be wired to the RPi, does the board come with wiring diagram?
No diagram at the time I bought it. But easy to find. Have a look at Audiophonics site. I’m not at home, but tomorrow I’ll have a look if you still haven’t found…
One reviewer on ebay seems to like this board a lot. I am attaching the review for anyone interested:
The sound is good to the price as is, but with a few modifications, it can compete with DACs costing several times this little gem.
I recommend a little soldering for best results.
You can power it from a Raspberry Pi or the like, in which case you should only connect ONE gnd or else you might end up with a noisy ground-loop. I would recommend a CLEAN 5V supply instead (USB battery power banks proves to be good and stable low-noise power supplies).
I also recommend to keep the I2S-cables as short as possible to avoid picking up noise. This results in a cleaner digital signal with less error-correction (jitter), hence a better sound.
If you have the nerve to solder directly onto the SMD components, you could do my modifications AT YOUR OWN RISK. I have more than 30 years of soldering experience. Keep in mind, you could easily fry the board instead …
YOU HAVE BEEN WARNED!!!
All modifications are done AT YOUR OWN RISK, and I take NO responsibility for destroyed boards!
I soldered small capacitors (8,2nF, though other values might prove better) directly onto the SMD-mounted DAC- and XO-chips. Especially the XO-mod made a huge audible difference. The impact of the DAC-mod is a smaller, but still gives a significant improvement to the sound.
I have deliberately NOT pointed out which pins to solder, as you would need a good knowledge of CMOS and SMD-circuits before even switching on your soldering iron, unless you deliberately want to burn your board instantly.
Specs for the SMD-chips, along with following the PCB and using a voltmeter, would lead to finding the right pins in minutes or seconds.
The unmodified board sounds fine, however the modified version is in a totally different league.
@cohomology! BTW, quite cryptic…
I have some soltering/electronic experience (basic example, I’m gonna solder the DAC pins on RPi, since have the old model without P5 header). I know what the SMD DAC is, and I suppose the XO is the oscillator. But the hint to solder a capacitor directly “onto” the components sounds a little vague to me…
Power filter? (capacitor between VCC and GND)
Output filter? (OUT R/L to GND?)
Can someone guess the right pins?
I mean, we have been warned enough in the message… Shame on me if I fry something.