Oneplus 7pro external usb dac - OnePlus 7 Pro Questions & Answers

I bought an external usb dac, i did plug it to Oneplus 7pro (with usb c to c otg cable, which came with dac), so far OP7pro only charging the dac, don't recognized it, sound coming only from phone speaker (Hiby music player), OP7pro is operating on DotOS v.5.1.3 rom (Andr. 11). Any sugestions?

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USB on the go

Hello, does USB on the go work with the s6? I am into high end audio, and I want to plug an external DAC into the usb port in order to bypass the phone's DAC chip.
USB OTG does work with the S6, not sure about the DAC bypass though...
I've tried 3 different DACs (Fiio Q1, Cayin C5, Schiit Fulla) with the S6 and OTG cable using USB Audio Player PRO and I was never able to get it to work unfortunately.

is there definitely a dac in the usb c dongle?

can anyone confirm! Is it a dac and amp
thinking of using it for an s8
or is it just a bog standard afapter
The dac is inside the phone itself.
There is definitely an amp in adapter and S8 sounds "better" (subjective opinion).
I can't get it to work
I've attached the dongle and it's not finding anything or playing via usb c
developer mode I've selected audio usb
Hello
The signal coming out from the usb connector is numeric and the sound coming from the earpiece is analogic. So by definition a DAC is mandatory in the dongle, it wouldn't work otherwise.
I even got a firmware upgrade for the dongle yesterday. So yes, definitely has a DAC inside.

Audio over USB

Has anyone tried an "Y" style audio and usb c charge cable with G5? Such as this one ( https://www.amazon.com/dp/B07176LPDT/ref=cm_sw_r_cp_apa_cxOHzb2QDXMWE )
I like to use my H850 in my car with a win sheild mount hooked to my car stereo through the top 3.5 mm headphone jack. I tough something like the above adapter might be nice and I could charge the phone at the same time.
I'm not sure if the G5 supports analog audio out over USB or if the above adapter has a cheap DAC in it as I could not find documentation on it. I have read elsewhere that the G5 does not work with USB DACs but that it does work with USB C headphones, which may be using a different standard.
Thanks.
Ok, just remembered I have a small USB audio "card" that I tried with my USB OTG cable. As long as I kept the USB setting on "power external device" it worked just like an external audio device. The card has its own volume up, down, and mute button which worked. It treated it as a "USB audio / dock" and responded to changes to that section of viper4android. The only downside is I am sure it draws more power (since the card has an LED light) and with this setup I cannot charge the phone.
I haven't tested the cards mic input or spdif output yet. It is based on the VIA Envy VT1620A chioset.
I use a USB headset through a USB-A to USB-C adapter and it works fine. I don't know about charging at the same time.

How to connect Pixel 2 to Fiio DAC/AMP?

Looks like the bundled male USB-C to female USB-A adapter's intended purpose is to help users transfer their data from old phone to new Pixel.
However, I have a Fiio Q1 Mark II DAC/AMP that has micro USB as input so I used the bundled USB-C to USB-A adapter to connect my Pixel 2 to this DAC but audio still comes out from the phone's speakers.
How can I output the audio through USB-C? In developer options, I select USB Configuration to "Audio Source" but nothing changed. Or I need to use a USB-C to micro USB cable?
To clarify things, here is my configurations: Pixel 2 <-> bundled USB-C to A adapter <-> normal micro USB cable <-> Fiio DAC <-> Headphones (3.5mm jack)
Thanks.
You should be able to use the combined line-in/line-out port instead of the micro-USB, though this would require you to first use the bundled USB-C to 3.5mm adapter. This is problematic if you're not rooted since the Google DAC has terrible distortion, and can only be fixed with root. The setup would be:
Pixel 2 -> Google USB-C to 3.5mm DAC (digital gain <75%) -> 3.5 male to 3.5 male -> Fiio Q1 DAC using 3.5mm line-in -> Headphones
A USB-C to micro-USB cable may work.
Telperion said:
You should be able to use the combined line-in/line-out port instead of the micro-USB, though this would require you to first use the bundled USB-C to 3.5mm adapter. This is problematic if you're not rooted since the Google DAC has terrible distortion, and can only be fixed with root. The setup would be:
Pixel 2 -> Google USB-C to 3.5mm DAC (digital gain <75%) -> 3.5 male to 3.5 male -> Fiio Q1 DAC using 3.5mm line-in -> Headphones
A USB-C to micro-USB cable may work.
Click to expand...
Click to collapse
Thanks for your reply.
I have finally made it work. USB-C peripherals must be connected in order. You need to power on the DAC first, connect the micro USB input then connect the USB-C to the Pixel last so the Pixel would recognize the device on the other end.
Another question raised. I have also tried connecting Fiio DAC to iPhone via micro USB to Lightning cable. It worked instantly. iPhone wouldn't let me adjust volume on the phone. Everything was handled by Fiio. Which I think is the correct way to do it since iPhone is just sending digital signal to the DAC and let it do all the work.
But with the Pixel, I'm still able to adjust volume on the phone. I wonder why the phone could do it since it should not do anything with the digital audio signal. I also would like to know how loud should I set the volume at phone and adjust the rest at the AMP.
Also, Pixel's battery is draining fast! Because USB-C supports charging connected devices. I'm not able to disable USB-C power output. The LED light on Fiio indicates that it's charging. The reason that I didn't want to use Google's USB-C to 3.5mm DAC is because the distortion issue. I believe Fiio DAC is much more powerful and audio quality is better.
BlackMiracle said:
Another question raised. I have also tried connecting Fiio DAC to iPhone via micro USB to Lightning cable. It worked instantly. iPhone wouldn't let me adjust volume on the phone. Everything was handled by Fiio. Which I think is the correct way to do it since iPhone is just sending digital signal to the DAC and let it do all the work.
But with the Pixel, I'm still able to adjust volume on the phone. I wonder why the phone could do it since it should not do anything with the digital audio signal. I also would like to know how loud should I set the volume at phone and adjust the rest at the AMP.
The reason that I didn't want to use Google's USB-C to 3.5mm DAC is because the distortion issue. I believe Fiio DAC is much more powerful and audio quality is better.
Click to expand...
Click to collapse
Apple I believe uses a line level, the Pixel's is amplified so you can still control it on the phone.
I'd recommend hopping over the the Pixel 2 XL forum, there are technical details that might answer your question. Objective sound measurements.
Regarding the Google DAC, the distortion goes away below about 75% digital gain. In that chained setup, you'd be looking to send as pure a signal as possible with little to no digital gain to the Fiio, which would then cleanly amplify it for playback.

Question POCO X4 Pro 5G - No HDMI image

I have a 9-in-1 USB-C adapter that includes three USB-A ports, USB-C charging port, card reader, 3.5 headphone jack, HDMI, and ethernet.
I have been trying to connect my POCO X4 Pro 5G to my TV through the HDMI port but I can't get any image, the phone only indicates that a USB audio unit is connected: "Playing sound over USB".
What can I do to get image through HDMI?
Thanks in advance.
You can't.
This is not supported.
Oh... Come on!! Seriously? Are you sure?
Is the ROM that doesn't support it or the hardware?

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