Discussion in 'Geek Cave: Computers, Tablets, HT, Phones, Games' started by Elnrik, Jul 31, 2017.
Evaluation of the audio implementation of V30
Well these landed in S.A. so I picked one up, upgrading from the V10, and I've noticed a similar issue/behavior as with the V10, only worse on the V30 and I'm curious if anyone else has this.
The issue is at low volumes there is a hissing which is some sort of distortion/interference and follows the general structure of the music. I notice this with my Andromedas, and weirdly enough on my V10 it disappeared after about a year of ownership. On the V30 it is much more noticeable and barring using an IEMatch makes the phone a no-go for low volume use with Andros.
The interesting thing is on the V30 I can hear it clear as day on the built-in speaker too. It is there with the DAC on or off, but much louder with the DAC on, especially if you trick it into hi gain. Mucking with a pigtail lead and plugging and unplugging will make the sound badly distorted on occasion. I'm not sure exactly how to repro that yet, though.
To reproduce using the speaker, take a fairly quiet passage and drop the volume to as low as it will go (without muting of course). That seems to be a '5' without the Quad DAC. Put the speaker to your ear and if you have the issue you should hear the ghost hiss. Now with the Quad DAC on using Andros it's actually straight up irritating on lowish volume listening.
I'll recheck my V10, but I remember being pleasantly surprised that this phenomenon seemed to just go away on it's own. I've mucked with every setting I can think of to no avail, so I;m interested if anyone else notices this behavior.
When I get back from travelling I'll upload a short clip with the intro to 'The boy next door' by Stacey Kent that does a great job of showing this issue.
Auxiliary information, I see this with UAPP and Onkyo HF Player, with and without the Quad DAC on but worse with it on as gain is higher.
Lemme know if you hear it too. Thx.
I asked my coworker to let me use his andromedas to test this, and the hiss is there and now I cannot unhear it until I crank the volume way up.
Wasnt really a problem for me before since I dont really listen to music at such low volumes or with good quality headphone\IEM, but dang I hope it does go away at some point.
Thanks for the verification! My V30's headphone jack crapped out so it's in for repair under warranty. They'll hopefully have it back to me in a week or so.
I haven't tested mine on any IEM,
But so far on portables and larger I have a black background without any hiss..
Also I have tested it extensively against my Mojo and the LG30 surpasses it on every level except center image depth and overall output power.
The LG30 also better than the GOV2 I had which was more dynamic than the Mojo but lost out due to having least soundstage depth and a more fatigue upper spectrum.
So for me the LG30 is way superior to any portable dac, with exception to using IEMs which ad stated above some have issue.
According to others using iems and the andromedas, there should not be any noise or hiss..
There are two likely culprits being the DAC is not turned on (check settings) even when plugged in.
And the other possible issue is using Tidal,
the LG30 upsamples as it does not natively play back 44/16, so it up-samples it to 48/16 and that can be a cause.
Best sound is from your own files thru native player or using Neutron.
Thru my headphones I experience clean sound thru Tidal and Neutron,
But with native player I noticed poor sound until I turned on the DAC in settings.
Separate names with a comma.