I got hold of an Onix Alpha the other day, and can't seem to get the DAC to go above 384kHz upsampling.. I'm hoping someone here may have some pointers. I doubt I could hear much/any difference between 384kHz and 768kHz, but I'd like to test to see.
The Alpha came with the latest firmware (which I don't need as I don't like Apple products), and have found and gotten hold of the earlier firmwares in case that turns out to be a recommendation.
I'm not particularly familiar with using DACs (I still can't shake thinking of them as external sound cards).. I have a few different pieces of equipment that have similarities (they too have DAC chips), and just assumed the Alpha would behave similarly, but with OTG capabilities, and that seems to ring true up to 384kHz.
Sources are a Win10 PC and a phone. The PC didn't see any change when installing the official driver - set in the device's settings in Windows, not trying to run as ASIO as far as I'm aware (would rather avoid ASIO-type drivers if I can). PowerAmp app on the phone can be set to 384kHz, but Eddict Player's even worse at max 192kHz.
I have no source material with that kind of sample rate, the best I have is 192kHz (but it's not on the phone yet). I use foobar as the PC player, but again, I don't want to enable ASIO if I can avoid it, which is why I haven't really tried looking into DSD playback via foobar. The PC is full modern hardware, the phone's aging, but I would've thought it'd cope fine (it's internal DAC is 384kHz). Unless using the computer to do solely one dedicated thing well (at the expense of everything else), kernel level stuff in Windows tends to bring me more headaches than it's worth.
Any comments/suggestions would be most appreciated!
EDIT: I've found others way back in July '24 making similar observations, and no one refuting them.. Perhaps the Alpha isn't actually up to spec? Can someone confirm they've had it running @ 768kHz and if so, on what transport, please?
General story and impressions that may assist others:
As my phone's starting to age, so is it's battery, and I want to make it last as long as I can. As such, grabbing a cable/adapter to allow external powering of the Alpha was the obvious solution. I wouldn't've even bought the Alpha if that wasn't possible; I've seen other DACs with separate power in ports and nearly pulled the trigger on one of those for that very reason, then I found the iBasso CB19 cable. Reading through this thread has certainly helped confirm my suspicion that external power would be preferable, but in practice it doesn't seem to need as much juice as I thought it would.
Initially (the first use/test session) I got a weird sound that I thought might be a single BA in the left IEM clipping - but only on certain tracks at specific times (I'm guessing a specific frequency was being hit, and there wasn't much else going on so it was noticeable and irritating). The issue was 100% repeatable. The Alpha became fairly hot to touch. I found turning the 4.4mm jack ever so slightly in the socket would cause audio to stop, or come back, sometimes it would sound thin as if half the data was missing. After unplugging and replugging a couple times all these issues disappeared. I must of spent 30mins trying to troubleshoot the weird single clipping BA sound before finally turning that jack - certainly didn't expect a jack to need 'burn in' or a bit of manhandling for it to make a proper connection. And now it makes a fine connection every single time, and the Alpha is barely warm to touch while running.
With the first USB cable I tried that didn't come in the box the PC would randomly reboot unexpectedly after a few mins of listening (no blue screen, just straight soft reboot without warning). After this happened 3 times I wasn't very impressed. The first thing I thought to do was swap the cable, and it's been fine ever since. I'm not unfamiliar with tech; I've even had a couple of IT jobs over the years. We get used to a rapid fire trial and error approach to troubleshooting. I can't enunciate why I first went to the USB cable as a possible cause for a PC reboot (completely bypassing the usual first step of cycling power), or even why it actually was the cause. The first cable I tried was overspec'd to handle the Alpha with ease. It was a fresh cable, perhaps it was cheap and not actually up to it's claimed spec.
The 3rd cable was a longer one that again should've been spec'd to handle the Alpha even with the length and the power drop that brings. I was experiencing mini/micro drop outs every few seconds, and they weren't consistent in their timing; as frequent as it was annoying. This was on a different port however, so I can't confirm there was enough power on the bus as there could've been other devices hanging off it - I didn't investigate that far. Adding the power up the line with the iBasso cable solved it.
If you're having troubles with the Alpha, try a different (hopefully better) cable and ensure it's sufficiently powered, cycle power, perhaps try jiggling things round a bit and allow a few hours for it to settle down.
Gotta say I'm impressed with the Alpha's performance; really enjoying what I'm hearing so far..