iBasso DX220 Does Not Work Properly Over USB

Sep 9, 2019 at 7:51 PM Thread Starter Post #1 of 14

sf_hifi

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Dear community,

This is part plea for help and part negative review.

I recently bought an iBasso DX220 from another Head-fi'er. Great transaction and the DX220 was provided nearly as new with box, paperwork, cables, etc... I use a number of amps/dacs with my DAPs at home. One setup is through a Chord Hugo2 (direct from DX220 via Toslink to Hugo2 - out to IEMs/phones). I also have a Woo WA8 Eclipse. At times, I will run DAP into Hugo2 (in DAC only mode) into WA8 as the amplifier. Again, the DX220 is connected to the Hugo2 via optical. Both these setups work great. Also have a Questyle 400i that when connected via Toslink works without issues.

However, with certain iems/phones and sources, I like to use the WA8 as a stand-alone (its a combo amp/dac). The only input on the WA8 for use in dac/amp mode is a USB B input. In the past, I have used a Pioneer XDP-300r via USB without issue. That's a direct connection from the XDP300 (microUSB out) via cable with a USB B male plug into the WA8.

With the DX220 I have found it impossible to use the USB connection to either my WA8 or Questyle amp. Because the DX220 is USB C (out), I first took my available cable (recall above) which was microUSB to USB B. I had a small microUSB to USB C adapter and when I used that with the previously functional cable there was no connection recognized and no output to the amps. I assumed it was because I was using a generic adapter (microUSB to USB C). So, I purchased a cable online (not terribly cheap but not audiophile) that was USB C to USB B so I could connect the DX220 directly to the WA8 or Questyle (I note that Schiit dac/amp combos also utilize USB B in exclusively which I don't understand but that's for another day). With this newly purchased cable, the DX220 was immediately recognized as a source. By the way, throughout this tale I have been using Hiby Music, Mango Music and Deezer streaming to try to solve the problem. When I played any file (using any of the three s/w players) there was a significant amount of static/popping/clipping/cutouts - basically a ton of noise making the setup unusable. Having started with the WA8 I went to my Questyle amp/dac to see what the culprit was. Same problem so the issue is not with the amp/dacs.

Assuming I had just bought (or been sold) a crappy cable I then bought an Audioquest USB C to USB B cable - not their totl but a 200-300 dollar three foot USB cable from an audiophile company. I was disappointed that the same problem occurred with the high-end cable. Again, it makes not difference which amp/dac or which s/w player I'm using. And because I know someone will ask - the files are CDs ripped to FLAC at various bit rates - some low, some higher but nothing exotic. And Deezer claims to stream in CD quality so again, nothing like hi-res, DSD or other.

Now, having gone through a few setups with different equipment, my frustration led me to the forums, both here and elsewhere and unfortunately none were terribly helpful but one did mention Paul at iBasso and suggested he was helpful. I have now been going back an forth with Paul for almost two weeks and he (and iBasso) have done nothing to solve the problem.

Paul's first suggestion was that I was using bad cables/connections. I explained that I had used a variety of cables including one that can arguably be considered audiophile quality (audioquest). After multiple emails, Paul told me that iBasso had only been able to get the USB connection to work if they use a USB C to USB A OTG cable and an adapter to go from USB A to the USB B male connector needed to plug into the WA8 or Questyle amp. Even though this made no sense to me, I took a look online and (because they are inexpensive and I wanted to solve the problem) ordered six different adapters - most just a short input/output plug setup but a couple had a little bit of cable, like six inches or so. I first used the USB cable that iBasso ships with its TOTL, 900 USD DX220 ( which is USB C to USB A) and tried with all six adapters and the DAP isn't even seen by the amps (or vice versa, doesn't matter). Turns out that the cable that iBasso includes with its TOTL, 900 USD DAP is not an OTG cable but merely a charging cable. I'll let you decide if that's good business or not.

However, I assumed it was a crappy dumb cable so I reached for another cable I had laying around that I knew to be OTG (USB C to USB A) and I again tried with all six adapters and the connection is not even made.

Throughout all of this, I continued to ask Paul at iBasso for assistance. He continued (and continues) to repeat the same questions (what cable are you using? is it an OTG cable? it sounds like a cable issue . . . blah blah) despite knowing exactly with cables and adapters I am using from about day 2 of this joke of a customer service journey. I have included pictures of the setup and cables. I have done a factory reset and am using the most current firmware. I have used the bit rate lock feature in the Hiby and Mango s/w to limit to its lowest option. Nothing has changed the problem.

What iBasso and Paul have utterly failed to do is (1) acknowledge that the problem might be with the DX220, (2) offer to inspect it, or (3) offer to replace it. He has repeatedly said that iBasso has used the DX220 over USB (recall, they could only get it to work with A to B adapters which provide no output signal for me) but have never identified the cables they are using. He has repeatedly told me that other customers are using the DAP over USB without problems but has never told me what cable setups they are using.

After almost two weeks and hundreds of dollars in cables, I am done.

If anyone has any suggestions or experience with this I'd appreciate help toward solving the issue.

As for iBasso, I will never buy another of their products. I strongly encourage others not to buy their products. They have simply refused to engage in any meaningful customer service or to even acknowledge that the problem might be with their DAP even though they admit that they need to use a USB C to USB A cable with some janky adapter to even make it work in house.

It was a mistake to buy this DAP - unfortunately I relied on the positive reviews but not being able to use a simple, direct USB connection to an amp/dac is a design flaw of monumental oversight/stupidity.
 
Sep 11, 2019 at 2:11 AM Post #2 of 14
Sorry to hear that you have had such extreme problems trying to get your devices to play nice together and that you spent a lot of extra money trying to resolve the situation only to exacerbate your frustration. I imagine most folks reading this have felt this pain at some point or another in our digital adventures...

Here are some observations/comments:
1) The different USB connection types, revision levels, and associated communication protocols are not forward/backward or 100% compatible with each other. So trying to connect the USB C on the DX220 to the USB B on the WA8 is really pushing the envelope of signal processing in my opinion (just take a look at the pinout differences at the link below for starters - no direct 1 to 1 corresponding pins). Even with adapters that are out there it does not guarantee compatibility as you are painfully aware. You can read more at this link if you are interested: https://en.wikipedia.org/wiki/USB#Connector_types

2) It sounds as though you want music files on the DX220 to be sent to the WA8 to be decoded/played by the WA8 if I understand the scenario described above correctly. I do not believe that the USB C connection from the DX220 is intended to do this - but I could be wrong here. The Mini Optical/Coaxial Output port (SPDIF) would provide the digital output but obviously there is no way to connect SPDIF to the USB B on the WA8 (although there might be some kind of adapter/converter that does this if you do some searching).

3) Given the Dual ES9028PRO DACs in the DX220 significantly better than the single ES9018M in the WA8 - have you consider using the DX220 Line Out from the AMP1MKII to the Line In on the WA8? Given the exceptional audio performance of the DX220 you might find this combination will produce acceptable, maybe even pleasing, results for you.

Not sure if any of this helps - hope you can find something of use.

Cheers,
Tim
 
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Sep 11, 2019 at 2:26 PM Post #3 of 14
Wow! - that's my first reaction. Thank you very much for taking the time to send this response. It is extremely helpful and (whether it ultimately leads to a solution or not) it had an immediate calming effect on me. Thanks again!
 
Sep 11, 2019 at 3:13 PM Post #4 of 14
Wow! - that's my first reaction. Thank you very much for taking the time to send this response. It is extremely helpful and (whether it ultimately leads to a solution or not) it had an immediate calming effect on me. Thanks again!
Glad I could provide some information and hope it gets you to a point of enjoying the DX220. If you have further questions I can try to answer them as well.

Cheers,
Tim
 
Nov 14, 2019 at 8:03 AM Post #5 of 14
Dear community,

This is part plea for help and part negative review.

I recently bought an iBasso DX220 from another Head-fi'er. Great transaction and the DX220 was provided nearly as new with box, paperwork, cables, etc... I use a number of amps/dacs with my DAPs at home. One setup is through a Chord Hugo2 (direct from DX220 via Toslink to Hugo2 - out to IEMs/phones). I also have a Woo WA8 Eclipse. At times, I will run DAP into Hugo2 (in DAC only mode) into WA8 as the amplifier. Again, the DX220 is connected to the Hugo2 via optical. Both these setups work great. Also have a Questyle 400i that when connected via Toslink works without issues.

However, with certain iems/phones and sources, I like to use the WA8 as a stand-alone (its a combo amp/dac). The only input on the WA8 for use in dac/amp mode is a USB B input. In the past, I have used a Pioneer XDP-300r via USB without issue. That's a direct connection from the XDP300 (microUSB out) via cable with a USB B male plug into the WA8.

With the DX220 I have found it impossible to use the USB connection to either my WA8 or Questyle amp. Because the DX220 is USB C (out), I first took my available cable (recall above) which was microUSB to USB B. I had a small microUSB to USB C adapter and when I used that with the previously functional cable there was no connection recognized and no output to the amps. I assumed it was because I was using a generic adapter (microUSB to USB C). So, I purchased a cable online (not terribly cheap but not audiophile) that was USB C to USB B so I could connect the DX220 directly to the WA8 or Questyle (I note that Schiit dac/amp combos also utilize USB B in exclusively which I don't understand but that's for another day). With this newly purchased cable, the DX220 was immediately recognized as a source. By the way, throughout this tale I have been using Hiby Music, Mango Music and Deezer streaming to try to solve the problem. When I played any file (using any of the three s/w players) there was a significant amount of static/popping/clipping/cutouts - basically a ton of noise making the setup unusable. Having started with the WA8 I went to my Questyle amp/dac to see what the culprit was. Same problem so the issue is not with the amp/dacs.

Assuming I had just bought (or been sold) a crappy cable I then bought an Audioquest USB C to USB B cable - not their totl but a 200-300 dollar three foot USB cable from an audiophile company. I was disappointed that the same problem occurred with the high-end cable. Again, it makes not difference which amp/dac or which s/w player I'm using. And because I know someone will ask - the files are CDs ripped to FLAC at various bit rates - some low, some higher but nothing exotic. And Deezer claims to stream in CD quality so again, nothing like hi-res, DSD or other.

Now, having gone through a few setups with different equipment, my frustration led me to the forums, both here and elsewhere and unfortunately none were terribly helpful but one did mention Paul at iBasso and suggested he was helpful. I have now been going back an forth with Paul for almost two weeks and he (and iBasso) have done nothing to solve the problem.

Paul's first suggestion was that I was using bad cables/connections. I explained that I had used a variety of cables including one that can arguably be considered audiophile quality (audioquest). After multiple emails, Paul told me that iBasso had only been able to get the USB connection to work if they use a USB C to USB A OTG cable and an adapter to go from USB A to the USB B male connector needed to plug into the WA8 or Questyle amp. Even though this made no sense to me, I took a look online and (because they are inexpensive and I wanted to solve the problem) ordered six different adapters - most just a short input/output plug setup but a couple had a little bit of cable, like six inches or so. I first used the USB cable that iBasso ships with its TOTL, 900 USD DX220 ( which is USB C to USB A) and tried with all six adapters and the DAP isn't even seen by the amps (or vice versa, doesn't matter). Turns out that the cable that iBasso includes with its TOTL, 900 USD DAP is not an OTG cable but merely a charging cable. I'll let you decide if that's good business or not.

However, I assumed it was a crappy dumb cable so I reached for another cable I had laying around that I knew to be OTG (USB C to USB A) and I again tried with all six adapters and the connection is not even made.

Throughout all of this, I continued to ask Paul at iBasso for assistance. He continued (and continues) to repeat the same questions (what cable are you using? is it an OTG cable? it sounds like a cable issue . . . blah blah) despite knowing exactly with cables and adapters I am using from about day 2 of this joke of a customer service journey. I have included pictures of the setup and cables. I have done a factory reset and am using the most current firmware. I have used the bit rate lock feature in the Hiby and Mango s/w to limit to its lowest option. Nothing has changed the problem.

What iBasso and Paul have utterly failed to do is (1) acknowledge that the problem might be with the DX220, (2) offer to inspect it, or (3) offer to replace it. He has repeatedly said that iBasso has used the DX220 over USB (recall, they could only get it to work with A to B adapters which provide no output signal for me) but have never identified the cables they are using. He has repeatedly told me that other customers are using the DAP over USB without problems but has never told me what cable setups they are using.

After almost two weeks and hundreds of dollars in cables, I am done.

If anyone has any suggestions or experience with this I'd appreciate help toward solving the issue.

As for iBasso, I will never buy another of their products. I strongly encourage others not to buy their products. They have simply refused to engage in any meaningful customer service or to even acknowledge that the problem might be with their DAP even though they admit that they need to use a USB C to USB A cable with some janky adapter to even make it work in house.

It was a mistake to buy this DAP - unfortunately I relied on the positive reviews but not being able to use a simple, direct USB connection to an amp/dac is a design flaw of monumental oversight/stupidity.

I'm exactly in the same boat as yours (having quite noisy/very bad signal from my DX220 USB-C port to the USB-B port of my Woo WA8).
Figuring it was a cable issue (I'm using a 10$ cheap USB-C to USB-B cable), I was to pull the trigger for a quite expensive Audioquest cable...

Did you finally solve your problem?

Please let me know!
 
Nov 14, 2019 at 12:16 PM Post #6 of 14
Do not use Dx200 or Dx220 for Digital transport over USB C

I have done extensive testing and with my knowledge, I can tell you these facts

1/ The Devices are heavily relying on the App that is playing back music, sometimes UAPP works, sometimes, it is Poweramp, Onkyo...etc... and these instances, it is all about the cables. Believe it or not. The shorter the cables, the better the device can works. I can explain more as of why, but I just want to share the fact.

2/ So, even if u found a working OTG cables, and working one for transport....even expensive one. The sound quality isn’t anywhere “near good” as Coax/optical aka SPDIF out. Even with cheaply but properly done Optical cables or Coax cables, you can get a much better performances 24/192 and DOP64x

3/ If you have a good Coaxial and expensive Coaxial cables, you can gain more performances. But it has to be very expensive when you compare to any cheap optical cables.

So my conclusion is that, using Optical out for Dx220/200 is the best meaning to use as digital transport, which is also affordable. Even with good audiophile optical cables, the differences is negligible. Unless you want to Output DSD128x over USB Type C into your external DAC, then USB will be the interface to go for...but I have not seen any Portable that is able to do this...Have you ?

On another kicker, regardless of the Hardware of your USB for digital interfaces, even if u go for the most expensive so called Audiophile USB Card And expensive oscillator....the USB as an interface is and has been always inferior to SPDIF. I had been there and done that, extensively testing. Please don’t start asking me fire graphs and scientific measurements... I don’t have a lab to do so, but I am skilled enough to build different PC, interfaces from DAC, upgrade clocks, built cables....and listen for changes with a heart of enthusiasm

That is what I found out: Even with a very beefy PC , DAC, Cables, SPDIF as an interface will still outperforming any USB interfaces.....even if it is doing DSD256. Yet, I have not seen any properly done interface for USB into SPDIF toward the newest Input of the current flagship Sigma-Delta such as ES9028/9038 Pro and AK4497/4499EQ that can directly take in SPDIF with DSD512 and DSD1024. I still have not to find any DSP interface via USB converter into SPDIF to be able to do such thing.
 
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Nov 15, 2019 at 1:20 PM Post #7 of 14
I'm exactly in the same boat as yours (having quite noisy/very bad signal from my DX220 USB-C port to the USB-B port of my Woo WA8).
Figuring it was a cable issue (I'm using a 10$ cheap USB-C to USB-B cable), I was to pull the trigger for a quite expensive Audioquest cable...

Did you finally solve your problem?

Please let me know!


My problem was never solved. I just have been using optical. I'm also having other issues with the unit - when I find time I'm just going to sell it and buy something else.
 
Nov 15, 2019 at 1:51 PM Post #8 of 14
Humm, sounds very frustrating…

I did some tests with my (lot) cheaper Shanling M0 DAP plugged into my Woo WA8 (with my 10$ USB-C to USB-B cable) and it works flawlessly. No cut-offs, no buggy signal.

It’s quite frustrating since I need the WA8’s power to drive my power-hungry headphones in my living room and I prefer the WA8’s sound without bypassing its built-in ESS9018 DAC… It sounds better to my ears than using the DX220’s DAC (with an AUX cable). So, I’m looking to sell my DX220 and get an Audioquest upgrade cable to use with my Shanling M0. It will be more useful (and less pricey) for me that way.
 
Aug 18, 2020 at 6:58 AM Post #9 of 14
Do not use Dx200 or Dx220 for Digital transport over USB C

I have done extensive testing and with my knowledge, I can tell you these facts

1/ The Devices are heavily relying on the App that is playing back music, sometimes UAPP works, sometimes, it is Poweramp, Onkyo...etc... and these instances, it is all about the cables. Believe it or not. The shorter the cables, the better the device can works. I can explain more as of why, but I just want to share the fact.

2/ So, even if u found a working OTG cables, and working one for transport....even expensive one. The sound quality isn’t anywhere “near good” as Coax/optical aka SPDIF out. Even with cheaply but properly done Optical cables or Coax cables, you can get a much better performances 24/192 and DOP64x

3/ If you have a good Coaxial and expensive Coaxial cables, you can gain more performances. But it has to be very expensive when you compare to any cheap optical cables.

So my conclusion is that, using Optical out for Dx220/200 is the best meaning to use as digital transport, which is also affordable. Even with good audiophile optical cables, the differences is negligible. Unless you want to Output DSD128x over USB Type C into your external DAC, then USB will be the interface to go for...but I have not seen any Portable that is able to do this...Have you ?

On another kicker, regardless of the Hardware of your USB for digital interfaces, even if u go for the most expensive so called Audiophile USB Card And expensive oscillator....the USB as an interface is and has been always inferior to SPDIF. I had been there and done that, extensively testing. Please don’t start asking me fire graphs and scientific measurements... I don’t have a lab to do so, but I am skilled enough to build different PC, interfaces from DAC, upgrade clocks, built cables....and listen for changes with a heart of enthusiasm

That is what I found out: Even with a very beefy PC , DAC, Cables, SPDIF as an interface will still outperforming any USB interfaces.....even if it is doing DSD256. Yet, I have not seen any properly done interface for USB into SPDIF toward the newest Input of the current flagship Sigma-Delta such as ES9028/9038 Pro and AK4497/4499EQ that can directly take in SPDIF with DSD512 and DSD1024. I still have not to find any DSP interface via USB converter into SPDIF to be able to do such thing.

Hey @Whitigir , @Paul - iBasso

I have a question regarding DX220 spdif output. How can I output DSD64 as DoP from the Spdif out (over coax cable)?
Which App do I need to use? Please share the app config setting as well. Guys, thank you so much in advance!

Cheers,
Prateek
 
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Aug 18, 2020 at 8:25 AM Post #10 of 14
Hey @Whitigir , @Paul - iBasso

I have a question regarding DX220 spdif output. How can I output DSD64 as DoP from the Spdif out (over coax cable)?
Which App do I need to use? Please share the app config setting as well. Guys, thank you so much in advance!

Cheers,
Prateek
You will need a DAC capable of 64x DOP. Then you can use either coax or optical with mango player. It had been a while, but I didn’t set anything, whenever I played DSD64 in Mango player , the DAC reads that it has DOP64x as an input
 
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Aug 18, 2020 at 8:53 AM Post #11 of 14
I don't understand all the technical issues at hand, but I think I tried something similar with Ibasso DX160. I wanted to try connecting the DAP from USB-C to the USB-B in my Klipsch the Three II speakers. I couldn't find a direct cable to do that, so I tried with stock USB-B to A cable and A-to-C adapter and yeah...not the greatest idea? In any case, I think the DAP overheated or something since I thought for a while I broke it, then it only loaded the battery to 90% (Android overheating protection I think) for that day.

Anyway, not gonna try that again unless I know what I'm doing...just using 3.5mm LO with AUX cable now. (And the DX160 has worked fine after that and loads the battery to 100% :L3000: )
 
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Aug 18, 2020 at 8:55 AM Post #12 of 14
I don't understand all the technical issues at hand, but I think I tried something similar with Ibasso DX160. I wanted to try connecting the DAP from USB-C to the USB-B in my Klipsch the Three speakers. I couldn't find a direct cable to do that, so I tried with stock USB-B to A cable and A-to-C adapter and yeah...not the greatest idea? In any case, I think the DAP overheated or something since I thought for a while I broke it, then it only loaded the battery to 90% (Android overheating protection I think) for that day.

Anyway, not gonna try that again unless I know what I'm doing...just using 3.5mm LO with AUX cable now.

Probably the case of non compliance to USB C specs. I won't risk my 220 either.
 
Feb 20, 2021 at 5:30 PM Post #13 of 14
Dear community,

This is part plea for help and part negative review.

I recently bought an iBasso DX220 from another Head-fi'er. Great transaction and the DX220 was provided nearly as new with box, paperwork, cables, etc... I use a number of amps/dacs with my DAPs at home. One setup is through a Chord Hugo2 (direct from DX220 via Toslink to Hugo2 - out to IEMs/phones). I also have a Woo WA8 Eclipse. At times, I will run DAP into Hugo2 (in DAC only mode) into WA8 as the amplifier. Again, the DX220 is connected to the Hugo2 via optical. Both these setups work great. Also have a Questyle 400i that when connected via Toslink works without issues.

However, with certain iems/phones and sources, I like to use the WA8 as a stand-alone (its a combo amp/dac). The only input on the WA8 for use in dac/amp mode is a USB B input. In the past, I have used a Pioneer XDP-300r via USB without issue. That's a direct connection from the XDP300 (microUSB out) via cable with a USB B male plug into the WA8.

With the DX220 I have found it impossible to use the USB connection to either my WA8 or Questyle amp. Because the DX220 is USB C (out), I first took my available cable (recall above) which was microUSB to USB B. I had a small microUSB to USB C adapter and when I used that with the previously functional cable there was no connection recognized and no output to the amps. I assumed it was because I was using a generic adapter (microUSB to USB C). So, I purchased a cable online (not terribly cheap but not audiophile) that was USB C to USB B so I could connect the DX220 directly to the WA8 or Questyle (I note that Schiit dac/amp combos also utilize USB B in exclusively which I don't understand but that's for another day). With this newly purchased cable, the DX220 was immediately recognized as a source. By the way, throughout this tale I have been using Hiby Music, Mango Music and Deezer streaming to try to solve the problem. When I played any file (using any of the three s/w players) there was a significant amount of static/popping/clipping/cutouts - basically a ton of noise making the setup unusable. Having started with the WA8 I went to my Questyle amp/dac to see what the culprit was. Same problem so the issue is not with the amp/dacs.

Assuming I had just bought (or been sold) a crappy cable I then bought an Audioquest USB C to USB B cable - not their totl but a 200-300 dollar three foot USB cable from an audiophile company. I was disappointed that the same problem occurred with the high-end cable. Again, it makes not difference which amp/dac or which s/w player I'm using. And because I know someone will ask - the files are CDs ripped to FLAC at various bit rates - some low, some higher but nothing exotic. And Deezer claims to stream in CD quality so again, nothing like hi-res, DSD or other.

Now, having gone through a few setups with different equipment, my frustration led me to the forums, both here and elsewhere and unfortunately none were terribly helpful but one did mention Paul at iBasso and suggested he was helpful. I have now been going back an forth with Paul for almost two weeks and he (and iBasso) have done nothing to solve the problem.

Paul's first suggestion was that I was using bad cables/connections. I explained that I had used a variety of cables including one that can arguably be considered audiophile quality (audioquest). After multiple emails, Paul told me that iBasso had only been able to get the USB connection to work if they use a USB C to USB A OTG cable and an adapter to go from USB A to the USB B male connector needed to plug into the WA8 or Questyle amp. Even though this made no sense to me, I took a look online and (because they are inexpensive and I wanted to solve the problem) ordered six different adapters - most just a short input/output plug setup but a couple had a little bit of cable, like six inches or so. I first used the USB cable that iBasso ships with its TOTL, 900 USD DX220 ( which is USB C to USB A) and tried with all six adapters and the DAP isn't even seen by the amps (or vice versa, doesn't matter). Turns out that the cable that iBasso includes with its TOTL, 900 USD DAP is not an OTG cable but merely a charging cable. I'll let you decide if that's good business or not.

However, I assumed it was a crappy dumb cable so I reached for another cable I had laying around that I knew to be OTG (USB C to USB A) and I again tried with all six adapters and the connection is not even made.

Throughout all of this, I continued to ask Paul at iBasso for assistance. He continued (and continues) to repeat the same questions (what cable are you using? is it an OTG cable? it sounds like a cable issue . . . blah blah) despite knowing exactly with cables and adapters I am using from about day 2 of this joke of a customer service journey. I have included pictures of the setup and cables. I have done a factory reset and am using the most current firmware. I have used the bit rate lock feature in the Hiby and Mango s/w to limit to its lowest option. Nothing has changed the problem.

What iBasso and Paul have utterly failed to do is (1) acknowledge that the problem might be with the DX220, (2) offer to inspect it, or (3) offer to replace it. He has repeatedly said that iBasso has used the DX220 over USB (recall, they could only get it to work with A to B adapters which provide no output signal for me) but have never identified the cables they are using. He has repeatedly told me that other customers are using the DAP over USB without problems but has never told me what cable setups they are using.

After almost two weeks and hundreds of dollars in cables, I am done.

If anyone has any suggestions or experience with this I'd appreciate help toward solving the issue.

As for iBasso, I will never buy another of their products. I strongly encourage others not to buy their products. They have simply refused to engage in any meaningful customer service or to even acknowledge that the problem might be with their DAP even though they admit that they need to use a USB C to USB A cable with some janky adapter to even make it work in house.

It was a mistake to buy this DAP - unfortunately I relied on the positive reviews but not being able to use a simple, direct USB connection to an amp/dac is a design flaw of monumental oversight/stupidity.
I HAVE YOUR SAME AND SAME PROBLEM !!!
i have a dac and headphone amplifier and i can't use the dx220 with usb otg output what a rage !!!
 

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