In general almost all Android phones are not compliant with the UAC (USB Audio Class) Specification. 99.999% of them do not handle the volume control correctly and are actually not compliant at all in that area unless you use the Extreme Audio driver which fixes that, but then some apps don't...

That sounds like the amplifier is having a hard time driving your IEMs. So most of these IEMs are really low impedance and using any phone with an external amp will probably have a hard time driving them. You may want to check with the company and see if you may have a defective unit. This has...

Jason, Nice post and I second your emotion! Why is it that audiophiles are always so mad? I can't spend 10 seconds at Computer Audiophile without my blood pressure exceeding it's maximum limits. So I design for Pro Audio and Audio. Over in the Pro Audio realm there are no wrong ways of doing...

Gang, So USB is really simple. It has three types of frame types but really all of them work the same way. The feedback pipe which is the problem with the clicking here is of the type isosynchronous. Well also the sending of audio samples is also isosynchronous so this is not a hardware issue...

Mark, Received and the email did not bounce so you should get the info. Thanks, Gordon

Mark, Yes all applications vary a bunch on Android. It's the most troubling audio system on any mobile device. I think the last 5 updates we did all had to do with Android. UAPP, Onkyo and others will take over the audio playback system from the OS and adjust the sample rate accordingly...

Mark, First all my emails to you are bouncing. Second, the Onkyo app works at a much lower level in the audio stack than the new Amazon app and that could be why it is working. But I would really talk to Cyrus and not Samsung about this. If the SoundKey is Adaptive USB and not Asyncrhonous USB...

Mark, Black, Red and Cobalt all basically have the same code in them. They differ in dac chip and associated passive components. Support at AudioQuest said that the Extreme Audio driver fixed all the problem users were having with the S10 series. To me that would indicate some kind of USB...

I find it a little weird that Cobalt would work and not Red. While the DAC chip and supporting circuitry are different, the code base is almost identical. Can you email me at: gordon@audioquest.com ~~~ Some questions to consider are: Does the distortion time frame change with sampling rate...

Davy's USB Audio Player Pro is more than an app it is also a device driver which will help with the async feedback problem you are experiencing. It will also sound better if the DAC has hardware volume control because android OS uses a software volume control which of course is not bit true and...

RZ, Well it seems the S10 has a little wacky USB-C port. On the spec the HS/FS/LS are located in the center and mirror imaged on the other side so that plugging the cable in either way will work. We have some people that have cables that only work in one direction. We have another user who has...

RZ, Hey pops and clicks usually indicate that the feed back pipe for the Asynchronous USB is failing. The feedback pipe is like a sample regulator so that the dac does not under or over run it's buffers. Because if it under or over runs then you get pops and clicks. I would try some other...

Yes correct it will, unless you have added some kind of upsampler. Thanks, Gordon

In Windows, Linux or macOS the application is really the only thing that will kill bit perfect output. So if you use Roon, J River, the new Audirvana or any other application if you set your configuration to WASAPI it should be bit perfect in the output. Thanks, Gordon

All, I posted a new version 1.07 for DragonFly about a month ago. This fixes some of the volume control problems with Android devices when using apps that don't support the low level device volume controls like youtube and others. If you are using the eXtream USB driver for Android you should...

Chefano,   Thanks for looking at this again! But your numbers and methods are still not correct. While you can with an oscillator and a DVM come up with a specific impedance at a given frequency, this is not the way to do it. Also that is not the way to do it with a Tube Amplifier either...

Guys,   Look the output impedance is 0.8ohms max... you cannot measure this kind of low output impedance with a freaken fluke meter.   Common guys get with the plan!   Look headphones and headphone amps are personal. Not all are going to work to the ability you want them to. If you...

Gang,   Someone just emailed me the link... Since I know a little about clocks and oscillators let me tell you a few things.   First it is correct that any change in the circuitry can change the sound, even with a USB to SPDIF converter. Using batteries of any kind can be a real hit or...

Quote: Originally Posted by audioengr There is more to it than that. I have yet to hear an equivalent PC-based system that sounds as good, and I am primarily PC-based. I just got a Mac Mini two weeks ago. The experiments that I have done using WiFi devices, reclockers, Firewire and...

Quote: Originally Posted by ile So... I guess this is what I'm trying to get at: Wouldn't all the jitter problems (that are caused by the transport) be resolved by a bit of buffering/latency? But latency in itself is a no-no and jitter is less evil and that's why there is jitter...

Ilkka, It really depends on how the USB receiver generates it's Audio Clocking output (I2S etc..). If for example it uses a frequency synthesizer and adaptive mode USB (changing this frequency every 1-4ms) then there will be two components of jitter. One from the Adaptive mode and one from...

Gang, The Proton was released last Monday for full shipment to all the dealers with pending orders. I am not really sure what you people are thinking about when you talk about the Electron. That has not been assigned to any product as of yet, nor was it ever. Originally the Proton was...

Quote: Originally Posted by Bostonears Some factory (in China) churns out these low priced glass fiber optic cables for various brand names. I own three of them. I purchased mine at Sound Professionals, and they are often available on eBay (just search for "glass Toslink"). SPDIF...

Quote: Originally Posted by EliasGwinn Their amplifiers are basically operating in bridged-mode. Nothing new there. In fact, most audio engineers will tell you to avoid bridged-mode unless you're desperate for power, since it will double the output impedance, distortion, noise, etc...

Quote: Originally Posted by EliasGwinn Summing ground connections at the jack is the same as remaining seperate until the circuit ground. That has been my arguement against the isolated ground arguement. The Sennheiser HD650's, for example, have isolated grounds that remain isolated...