Why not set it to the highest bit rate and frequency as I have here at 32bit and 384000hz
Also, fiddling with anything in the Realtek HD Audio Manger doesnāt do anything as it doesnāt read my USB Dac as a source
Also Iām running the DAC and AMP through fully balanced, so USB --> DAC --> Dual XLR Output --> Dual XLR Input onto AMP --> XLR Output to headphones
Oh, OK, yes, thatās also true. Thank you for pointing it out.
The principle is the same as described above, except that you plug in a cable with a 3.5 mm jack and then connect it to the Loxie via Rca.
What may still be missing is the Xmos driver.
Have you installed it?
Wait, why am I plugging with a 3.5mm jack and connecting to loxjie via RCA when I want to run this setup fully balanced?
And I donāt know what the Xmos driver is?
Iām questioning this tooā¦ 0_o
Just to make sure there is no problem with any xlr ports ( unlikely) in either the sdac or the loxjie. Some manufacturer defect which are unusual 
What are your thoughts on the APO Drivers and/or audio enhancers?
I have not use one yet 
.
I like to use headphones for their stock capabilities. There is a guy from YouTube I think his name is resolve. He likes to squeeze the potential of the headphones by eq. Also, look at oratory1990 he have tutorials to get the peace equalizer ( skin for the Apo) and have eq settings for a bunch of headphones.
Very interesting! Iām trying to follow his EQ presets, but heās using 10 bands, but on the APO EQ with Peace it has 13 bands in total
Okay, there are probably two versions of the Loxie.
Then the connection is to connect the Sdac to the PC via USB and then the rest via Xlr, which fits so far.
Then it is not the way you have connected it.
The Xmos driver is responsible for the audio output in the Usb class 1&2.
On their website:
āWindows 10 and Apple OSX version 10.6.4 and above natively supports USB Audio Class 2.0 ā no driver install is required.ā
I have windows 10, so I think I donāt need to install the driver
If you donāt install the driver you only get the 32 bit depth modes, and those can cause issues in some windows apps.
what does this driver do?
A driver lets ācommunicateā the OS to access hardware connected to the PC.
Before new OS like windows 10, pc users have to use cd with the drivers for each hardware microphone, webcams, Graphic cards ( graphics card came with a cd with drivers).
Now, most modern OS automatically looks for drivers over the internet and update your peripherals to the latest driver.
Sometimes certain peripherals drivers used from Windows are not the latest ones or in some cases the wrong ones, which could affect the functionality of the devices. Like when you open Nvidia game ready that looks for the latest drivers for you and tells you to update.
What our friend @Deleeh is trying to tell you to look for the latest specific driver (xmos web site, for latest) for the sdac-b hardware. That way we could discard the possibility of driver malfunction.
We are trying to solve the trouble with your DAC. That is why we are suggesting things like changing cables, switch inputs, verify from the software end on your pc, and some other stuff. It has happened to me and some other users when a simple input switch or what happen to me when I bought an RCA cable from a reputable seller (inverted channel) mess my setup 
I see!
There are two available drivers for download on that website, which one should I download?
Edit: oh, probably the one thatās free 
This free version has a āBeep tone every 5 minutes after 60 minutesā
Anyone know about this? This would be very annoying
I have no idea. Better stick with the windows one lol. How does your audio chain sounds? Any better or different after a day
Actually, I fiddled with Oratoryās EQ presets to my liking and I am enjoying music again
BeBe -
Iām running essentially the same setup - Grace Balanced SDAC into a Loxjiie P20 driving a pair of HiFiMan Devas setup for balanced operation via the front 4-pin XLR connector.
Youāre right, USB ā2ā does sound the better of the two USB options. When I took a look inside of a P20, it appeared that they had prioritized the XLR signal chain over both the single-ended and balanced headphone jack outputs - so I built a pair of 3-wire XLR jumpers using $8 worth of connectors from Amazon and some wire I had in my junk box.
This setup works well & sounds so decent, that Iām planning to upgrade the P20 with new 5670 tubes and an op-amp swap. This little ampās basic circuit topology, layout, and parts quality is far, far better than itās price would suggest - itās like the audio folks designed it & then the marketing weasels brought it in at a price point by using the cheapest tubes and op-amps they could source.
All the more modding fun for us ā¦
Cheers
Jim - KJ7QT
