Jimster480
Major Contributor
Nice newer measurements. Pretty competent overall considering the price. Sad that it puts some $3000+ Dedicated units to shame.
What headphones do you have? Because the dongle does not have that much power, so I would imagine you mostly use IEMs.It's pretty much all I use around here and cheap enough that they just remain on the end of the headphones as they get moved around!
Heaviest thing is a DCA Aeon 2 Noire and on my computer I run it 30-40% volume. I have to max it out on android though as the dongle is not as loud on there.What headphones do you have? Because the dongle does not have that much power, so I would imagine you mostly use IEMs.
You can use USB Audio Player Pro to get the full volume even on Android.Heavest thing is a DCA Aeon 2 Noire and on my computer I run it 30-40% volume. I have to max it out on android though as the dongle is not as loud.
??You can use USB Audio Player Pro to get the full volume even on Android.
See here: https://www.audiosciencereview.com/...luetooth-dac-headphone-amp.17386/post-1302123??
It doesn't seem to work for me.
Or I don't know how to do it.
Forgot to say before: thanks for doing this. It's great to see these accurate measurements.A2155 -20dB (50mV) 16 ohm SINAD
View attachment 370104
A2049 -26dB (50mV) 16 ohm SINAD
View attachment 370105
(ADC is the RME UFX III - Mic inputs 40dB gain - for the above)
NB: @staticV3 Your measurements are 20Hz-20kHz, the above are <10Hz-24kHz, which gives a 0.8dB lower SNR (and SINAD) for a flat white noise.
So they are coherent.
For two years so far...Apparently there is a bug that is open and assigned for this https://issuetracker.google.com/issues/242221770
That's what I figured...but then why can the laptop output more voltage?EU "don't want to damage hearing" argument is stupid, but is the reason for the lack of voltage.
So the hardware in the EU Dongle is capable of full 1 Vrms, but only with devices in Apple ecosystem? Any idea how Apple is implementing this on a hardware level, considering Non-Apple devices are locked at 0.5 Vrms regardless of any changes made on the software level.See here: https://www.audiosciencereview.com/...luetooth-dac-headphone-amp.17386/post-1302123
This only gets rid of the additional Android limiter btw.
The EU voltage limit stays intact. Only some Apple computers can disable that.
Correct.So the hardware in the EU Dongle is capable of full 1 Vrms, but only with devices in Apple ecosystem?
Sadly, no.Any idea how Apple is implementing this on a hardware level, considering Non-Apple devices are locked at 0.5 Vrms regardless of any changes made on the software level.
I cannot, sorry.Also can you share some insight regarding Apple DAC on the newer MacBooks here?
I am thinking that we're in this odd situation because of things like this:That's what I figured...but then why can the laptop output more voltage?
So the hardware in the EU Dongle is capable of full 1 Vrms, but only with devices in Apple ecosystem? Any idea how Apple is implementing this on a hardware level, considering Non-Apple devices are locked at 0.5 Vrms regardless of any changes made on the software level.
The Apple dongle defaults to -20dB UAC2 hardware volume.After reading the measurements and review of the Apple USB-C to Headphone adapter, I figured it would be worth the $9 USD to try it out with a little Raspberry Pi music player I'm putting together. The local Best Buy had the Apple dongle/dangler in stock, so I went for it.
I figured it should sound decent with its output connected to my stereo system, which consists of a passive input selector/volume control (50k dual-gang log-taper stepped attenuator) with RCA jacks for ins and out feeding a Behringer A800 amp and JBL Studio 530 (passive) speakers.
I normally use an older version Topping D10, which I'm pretty happy with. I think it sounds good and it's been completely reliable. I knew the Apple dongle would have only 1/2 the level out compared to the D10, so I compensated by turning up the volume when listening to the Apple. (I don't get bent out of shape if I have to turn the volume up to 2 o'clock for a moderate listening level.) The Apple dongle was recognized by Moode Audio with no issues. I tried it out and I think Best Buy must be selling the EU version, because the output level was really low. To my ears, the sound from it seemed 'thin' and 'washed out' (sorry for the non-technical descriptive language, but I can't communicate what I hear any other way). The bass seemed kind of weak and the general presentation seemed a little fuzzy. It just wasn't any fun to listen to. The sound was probably acceptable in technical terms, but it seemed just blah to me.
I went back to the D10 and there was that nice sound again, immediately apparent and obvious. All I can say is that the D10 sounds 'bigger' and more 'full sounding'. Definitely more fun. I was listening to a FLAC-8 rip from CD of Sarah Vaughan "Brazilian Romance" at 16bit/44.1kHz resolution. Sassy sounds closer to me from the D10, more forward in the mix. There's more of a sense of depth to the recording. There's a lot going on in that recording; hand percussion, nicely recorded drum set, piano, electric keyboards, horn solos, electric bass, a string section, studio reverb on some things, all sorts of stuff. I played the same song ("Romance") through all the various DACs, at a fairly low level, with the level balanced as best I could without measuring.
To me, the two DACs do definitely sound different, even with the D10 turned down two stops on the attenuator. That really bothered me. Shouldn't the Apple dongle sound just as good as the D10 if I turn up the volume to match levels? Perhaps the Apple dongle I got is limited to 0.5V rms max out from a Raspberry Pi (??).
The next day I hooked up two other little DACs I have hanging around, one a Turtle Beach Atlas Edge USB-A to 3.5mm headphone dongle based on an AKM codec (discontinued, sold as a PC gaming accessory) and the other a Behringer UCA-202 (USB sound card with fixed level RCA outputs). To make a long story short, I ended up liking the Behringer better than either the Turtle Beach or Apple dongles. I actually liked the sound of the Turtle Beach dongle better than the sound from the Apple one. (That was a surprise.) NwAvGuy measured the UCA-202 max output at just shy of 1.2V rms (13 years ago), which might be >+6dB compared to the max output of the Apple dongle if it's an EU version.
Anyway, long story short, as a DAC from a Raspberry Pi running Moode Audio into a stereo system, I like the sound from the Behringer UCA-202 better than either dongle, but (perhaps predictably) not as much as the sound from the Topping D10.
However, I have to admit this could be a case of liking the loudest one best, as this was a sighted, completely subjective comparison. But I didn't have a pre-determined favorite, and I expected the Apple was going to be very good (they have such a good reputation for making quality stuff). Oh well. Take it for whatever it's worth, or not worth. I'm just sharing my experience with the thing, that's all.
Any direction on what commands to enter at the terminal?