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The absence of the 32bit is puzzling as the SU-1 supports 32-bit over I2S, hmm.
Interesting, does this mean one can use a XMOS driver from another device? I thought the drivers were locked to hardware, after all you can't just get a generic full driver directly from XMOS.
I can't speak to other XMOS drivers but the current HOLO driver is compatible with SU-1 running latest firmware. Works flawlessly for me.
I agree. I installed the latest Holo driver for Windows - Version 4.35 - this morning without incident.
Even though the Singxer SU-1 is the "first" device in the USB signal path, the Holo driver is able communicate with the XMOS based SU-1.
Thanks folks, good to know unlocked XMOS drivers do exist.
Singxer have made their own driver 4.36 and it sounds much better than any other drivers I've tried so far (DIYINHK, Holo). It also has even 8 packets in the buffer (which means very low latency). So far I could only had 64 packets with the Holo driver.
Is there a 16-bit setting on the "Format" tab in the driver control panel, if there is the "Format" tab at all?
Yes, you've got the choice of 16 and 24bits.
Thanks, but no 32 bits? Odd as it is spec'd to support 32 bits over I2S. My Marix X-SPDIF 2 has 24 and 32, but no 16. It sounds like these devices should have all 16, 24, and 32 listed to be able to restrict capabilities based on the downstream hardware.
There are no commercial audio recordings at 32 bits, nor any DAC in existence that can resolve 32 bits. Even if there were, the minimum listening level would be 192 dB. Of course you could say, I just want more than 24, but that would mean you are listening at more than 144 dB which would literally make your ears bleed. With 16 bit, you may get some short bursts of sound that exceeds 96 dB so you want a few more bits for headroom, but still well below 24.
If you look at the specs of your DAC, you are likely to see something in the 120 dB dynamic range so well below 24 bits even though it may be spec'd for 24 bits. Schiit will tell you that their flagship Yggy "only" resolves 21 bits. Chord Dave is spec'd at 127.5 dB which is also about 21 bits.
Of course for native DSD the bit depth is 1 so the resolution increases with just the sampling rate.
I get it, but if the device is spec'd at 32 bit I want to be able to send 32 bit to it, after all there are DS dac chips that can take 32 bit words and digital filters that can produce them. I'm more frustrated because of the missing 16-bit mode on my Matrix however.
It can be done. Under Windows, I can use JRiver to upsample to 32 bits and use the ASIO driver to output 32 bits to the SU-1. But as I said, there is no point to it.
In my case I use forced 32bits in Jplay settings.
Dumb question - what do I need to connect the optical output on the SU-1? I have a standard toslink and mini (looks like a 3.5mm jack from Fiio) cable.