DX340 iBasso developed Discret DAC, Easily replaceable batteries, Amp Modules! ***New firmware on 1st page. v1.03 local update. AMP16 NOS Tube amp. Review on the 1st page! 4/6/25

[DAPpower]

@DAPpower: thanks for reporting, and yes, I have that too. But...unrelated to Advanced Tweaking. I am pretty sure you also ran Debloating & Optimization, right?

Was a super lucky guess, but I found the problem right away. It's a bug in UAPP that I can provide a workaround for. This line causes the problem:

settings put global animator_duration_scale 0

UAPP seems to read the animation duration from this global setting. If I change the value to 0.1, the problem goes away. In other words, if the value is 0, UAPP just stops (or never triggers) its animations. However, the setting in my script is not unusual: if you go to Settings > Accessibility > Color & Motion and select "Remove animations", the same global setting/value is saved in the background. Someone should report this to UAPP.

In the meantime, I just uploaded a new version (v5.4b) of the Debloating & Optimization script that fixes the issue (simply re-run). Please let me know if this solves your problem!

Update: if you don't want to re-run the entire script, here is a quick one-line solution (persistent, effective immediately, no restart required):

adb shell settings put global animator_duration_scale 0.1

Thank you so much! It works!

 

[jstuart83]

Same here.

Thanks for the report I've sent a bunch of PD chargers and battery packs to Bloom audio for testing. I Basso wanted me to return my unit but I had the feeling its something with the firmware. Ifot in about 400 dollars of chargers and battery packs today to try. So far ive tried a u green and an anker 35 watt charger both which are iQ. They both have worked fine. Im almost positive that there are some issues with chargers over 35 watts and PD. 65 watt chargers are hit or miss. If you are plugging in your DX340 and notice it start to charge then stop then began to charge, I urge you to speak up. It should go from charging on the lock screen to fast charging without dropping the power. Thats not normal behavior. I feel iBasso either needs to correct this or add a charger in the box, or at least put on the website what specs to use for the charger. Pedro you are the second person that has confirmed this behavior for me thank you.

 

[mattclarke18]

Thanks for the report I've sent a bunch of PD chargers and battery packs to Bloom audio for testing. I Basso wanted me to return my unit but I had the feeling its something with the firmware. Ifot in about 400 dollars of chargers and battery packs today to try. So far ive tried a u green and an anker 35 watt charger both which are iQ. They both have worked fine. Im almost positive that there are some issues with chargers over 35 watts and PD. 65 watt chargers are hit or miss. If you are plugging in your DX340 and notice it start to charge then stop then began to charge, I urge you to speak up. It should go from charging on the lock screen to fast charging without dropping the power. Thats not normal behavior. I feel iBasso either needs to correct this or add a charger in the box, or at least put on the website what specs to use for the charger. Pedro you are the second person that has confirmed this behavior for me thank you.

Did doing the flash doing anything to help?

 

[DAPpower]

I finally sound a desk stand that works for the DX340, well sorta.....

APPS2CAR cell phone stand
https://a.co/d/gfIkdrJ

It's a strong sturdy desktop stand and it has horizontal spring loaded side clamps that are adjustable that will keep secure your DX340. The only problem was that the right bottom prong was covering the 12V-IN port so cut off the right bottom prong and file off the excess. Now the player is nicely balanced on the desk stand with both 4.4mm and 12V ports available to use. This is also future proof for the upcoming amp modules since they have the same ports layout.

This wouldn't have been possible if it didn't have the adjustment side clamps as these really have a nice hold on the player without being too tight.

 

[jstuart83]

Did doing the flash doing anything to help?

Not really. I greatly appreciate your help with that. Your guide was spot on. The sound seems like it got better I've been burring in my amp 16 its starting to sound great. Anything I have that is higher in wattage as far as PD chargers go which is about all I have, I travel a lot and don't like to carry 10 different bricks. PD are hit or miss the anker prime battery packs that have the digital readouts will not charge at all. They just go into a loop. If I plug it into the usba ports on these they work flawlessly but usba doesn't use the PD spec. Using my tester pd will not supply power till you plug in something on both ends. The usba ports are pushing 5volts as soon as I plug in the tester and remains till I unplug it There are some PD bricks and chargers that will eventually figure it out but you will notice the battery go from white to green then back to white then back to green. It may do this 3 or 4 times or it may do it forever. The lower wattage bricks I've ordered 20-35 watts seem to be the most stable. If your charging of of a usb a QC rated at fast charge of 9v at 1.67 amps your golden and will probity never have an issue. Im assuming most people just are not paying attention to the visual charge indicators or there charging off of the cable that came with the system. The unit should start out at 5v 2amp and then talk it out with the charger to bump to 9v 1.67 amps uninterrupted. But 99 percent of usbc PD chargers I've tried are killing power to the device then sending power back then killing it again, I can see this on the monitor. Eventually it may figure it out but its the same as plugging and in plugging the device in multiple times which I feel is not good for the charging circuit. It seems like the charging chip on the 340 and the pd chip are not playing nice and cant find the correct voltage outputs till they argue some lol. Two people have verified this behavior to me, Bloom was seeing it as well on their demo device. So thats three people so far. I plugged mine into a brick, woke up one morning and noticed it was dead. I plugged it back in and watched it charge cycle. It did it all night which led me down this path. Since there no audible charging indicators I didn't know it was doing it probity shortened the life of my unit a lot. Im just trying to get some feed back from others to hopefully either prove i have a bad unit or that they have an issue that needs to be addressed. Im leaning more to them having an issue after the responses I've received. Although it could just be a hand full of units. I wont the device to succeed and be the best it can be. At 1700 dollars PD charging should be supported correctly. My 60 dollar bluetooth ear buds will charge off a PD charger correctly.

 

[mattclarke18]

Not really. I greatly appreciate your help with that. Your guide was spot on. The sound seems like it got better I've been burring in my amp 16 its starting to sound great. Anything I have that is higher in wattage as far as PD chargers go which is about all I have, I travel a lot and don't like to carry 10 different bricks. PD are hit or miss the anker prime battery packs that have the digital readouts will not charge at all. They just go into a loop. If I plug it into the usba ports on these they work flawlessly but usba doesn't use the PD spec. Using my tester pd will not supply power till you plug in something on both ends. The usba ports are pushing 5volts as soon as I plug in the tester and remains till I unplug it There are some PD bricks and chargers that will eventually figure it out but you will notice the battery go from white to green then back to white then back to green. It may do this 3 or 4 times or it may do it forever. The lower wattage bricks I've ordered 20-35 watts seem to be the most stable. If your charging of of a usb a QC rated at fast charge of 9v at 1.67 amps your golden and will probity never have an issue. Im assuming most people just are not paying attention to the visual charge indicators or there charging off of the cable that came with the system. The unit should start out at 5v 2amp and then talk it out with the charger to bump to 9v 1.67 amps uninterrupted. But 99 percent of usbc PD chargers I've tried are killing power to the device then sending power back then killing it again, I can see this on the monitor. Eventually it may figure it out but its the same as plugging and in plugging the device in multiple times which I feel is not good for the charging circuit. It seems like the charging chip on the 340 and the pd chip are not playing nice and cant find the correct voltage outputs till they argue some lol. Two people have verified this behavior to me, Bloom was seeing it as well on their demo device. So thats three people so far. I plugged mine into a brick, woke up one morning and noticed it was dead. I plugged it back in and watched it charge cycle. It did it all night which led me down this path. Since there no audible charging indicators I didn't know it was doing it probity shortened the life of my unit a lot. Im just trying to get some feed back from others to hopefully either prove i have a bad unit or that they have an issue that needs to be addressed. Im leaning more to them having an issue after the responses I've received. Although it could just be a hand full of units. I wont the device to succeed and be the best it can be. At 1700 dollars PD charging should be supported correctly. My 60 dollar bluetooth ear buds will charge off a PD charger correctly.

I am sorry to hear it did not help. At least you know that software side you are clean. Sounds like Ibasso needs to check this out in detail. I have a unit from the 1st batch made and whatever batch was made for sale for end of Jan with correct FPGA sticker. If I do not plug in battery bank with DAP powered off I have seen it not go into bypass mode but use battery instead which should not happen. I am using 36 watt port on battery bank and 65 watt port for 12VDC. I run in bypass all the time. Do you have a link to a meter that does not cost a fortune? I am willing to test my 2 units. The battery bank I am using does not give that read out but I do have one that does but it only has 1 usb C port but could go without SG for testing. Do you still have issues with charging with DAP powered off? I had issues with DAP charging with it powered on and maybe still exist but doing bypass so have not tested in a long time. SmartPack will report some battery drain even with Bypass enabled - 800 to 1200 mA. In theory that should not be happening. Told Paul and he said its probably because I am rooted so they would not look into more. I will need to look up the ADB commands for battery info as SmartPack is getting it from the OS.

 

[jstuart83]

I am sorry to hear it did not help. At least you know that software side you are clean. Sounds like Ibasso needs to check this out in detail. I have a unit from the 1st batch made and whatever batch was made for sale for end of Jan with correct FPGA sticker. If I do not plug in battery bank with DAP powered off I have seen it not go into bypass mode but use battery instead which should not happen. I am using 36 watt port on battery bank and 65 watt port for 12VDC. I run in bypass all the time. Do you have a link to a meter that does not cost a fortune? I am willing to test my 2 units. The battery bank I am using does not give that read out but I do have one that does but it only has 1 usb C port but could go without SG for testing. Do you still have issues with charging with DAP powered off? I had issues with DAP charging with it powered on and maybe still exist but doing bypass so have not tested in a long time. SmartPack will report some battery drain even with Bypass enabled - 800 to 1200 mA. In theory that should not be happening. Told Paul and he said its probably because I am rooted so they would not look into more. I will need to look up the ADB commands for battery info as SmartPack is getting

I am sorry to hear it did not help. At least you know that software side you are clean. Sounds like Ibasso needs to check this out in detail. I have a unit from the 1st batch made and whatever batch was made for sale for end of Jan with correct FPGA sticker. If I do not plug in battery bank with DAP powered off I have seen it not go into bypass mode but use battery instead which should not happen. I am using 36 watt port on battery bank and 65 watt port for 12VDC. I run in bypass all the time. Do you have a link to a meter that does not cost a fortune? I am willing to test my 2 units. The battery bank I am using does not give that read out but I do have one that does but it only has 1 usb C port but could go without SG for testing. Do you still have issues with charging with DAP powered off? I had issues with DAP charging with it powered on and maybe still exist but doing bypass so have not tested in a long time. SmartPack will report some battery drain even with Bypass enabled - 800 to 1200 mA. In theory that should not be happening. Told Paul and he said its probably because I am rooted so they would not look into more. I will need to look up the ADB commands for battery info as SmartPack is getting it from the OS.

It did fix the issue I was having with upscaling to dsd 256 in neuron player with the screen off, as soon as the screen went off it would start skipping and cutting out, so it was a good thing. Honestly you don’t need a usb tester. If you plug in the dx340 on the lock screen at the bottom it will say charging. At this point its running 5v give or take 2 amps. Once it negotiates with the charger for fast charge which is where they’re getting there charge time of 2.5 hours on the web site it will go to charging rapidly. At that point it goes to the 9v give or take 1.67 amps. If your using the 65watt port for the 12v out and its a PD charger if you plug the 340 in to that slot with out a full battery Im almost willing to bet you will see what Im describing. The battery will go green and the screen will twinkle then the charging message will go away and the battery indicator will go white agin. A split second later you will see it say charging and the battery go green again then the screen twinkle agin. It may do this twice or three times it may never stop till you unplug it, Its very sporadic. Some chargers will act right 90 percent of the time some 50 percent of the time, others 20 percent and some never. Anker products seem to be the biggest issue. Ive tried it on two new anker banks I got in today and one 35 watt anker pd that did it to me about 3 times out of the ten I plugged it in and out. The other is a u green one. It seems to be be ok but its 33 watt. The two other anker banks were no good, unless your running on the usba. As for the inline tester this is the one Im using.
https://a.co/d/4aIaGdg
Ive tried this thing on probity 2000 dollars of charging equipment and the only thing that works every time is usba which is not PD standards and not as smart… I may have already said this but its weird they give you a usba to usbc cable. Which tells me it wasn’t designed to utilize PD standards. If it did why not a just include a usbc to usbc? If that's the case they haven't been very forthcoming coming about it. One would assume PD works correctly. The Astell&Kern Kann ultra says on there website the unit is PD 3.0 and QC 3.0 compatible. I didn't have any of these issues with it. As I said I'm not knocking them its still a good product I may just actually have a bad one and I may be 100 percent wrong, which I hope I am. I have yet seen this thing go into battery override mode. How do you know its in the mode? Does the charging lightning bolt in the battery go away or is there any type of visual? Yea I use ro always charge it with it off. I discovered the issue because i plugged it in one night and woke up the next morning and turned it on and it had not charged. So i started testing and sure enough with it powered off it would just keep throwing the white battery charging indicater on and off on and off. Thats what led me down this rabbit hole. This could explain why yours doesn't always go into bypass mode? Mabye.

 

[mattclarke18]

It did fix the issue I was having with upscaling to dsd 256 in neuron player with the screen off, as soon as the screen went off it would start skipping and cutting out, so it was a good thing. Honestly you don’t need a usb tester. If you plug in the dx340 on the lock screen at the bottom it will say charging. At this point its running 5v give or take 2 amps. Once it negotiates with the charger for fast charge which is where they’re getting there charge time of 2.5 hours on the web site it will go to charging rapidly. At that point it goes to the 9v give or take 1.67 amps. If your using the 65watt port for the 12v out and its a PD charger if you plug the 340 in to that slot with out a full battery Im almost willing to bet you will see what Im describing. The battery will go green and the screen will twinkle then the charging message will go away and the battery indicator will go white agin. A split second later you will see it say charging and the battery go green again then the screen twinkle agin. It may do this twice or three times it may never stop till you unplug it, Its very sporadic. Some chargers will act right 90 percent of the time some 50 percent of the time, others 20 percent and some never. Anker products seem to be the biggest issue. Ive tried it on two new anker banks I got in today and one 35 watt anker pd that did it to me about 3 times out of the ten I plugged it in and out. The other is a u green one. It seems to be be ok but its 33 watt. The two other anker banks were no good, unless your running on the usba. As for the inline tester this is the one Im using.
https://a.co/d/4aIaGdg
Ive tried this thing on probity 2000 dollars of charging equipment and the only thing that works every time is usba which is not PD standards and not as smart… I may have already said this but its weird they give you a usba to usbc cable. Which tells me it wasn’t designed to utilize PD standards. If it did why not a just include a usbc to usbc? If that's the case they haven't been very forthcoming coming about it. One would assume PD works correctly. The Astell&Kern Kann ultra says on there website the unit is PD 3.0 and QC 3.0 compatible. I didn't have any of these issues with it. As I said I'm not knocking them its still a good product I may just actually have a bad one and I may be 100 percent wrong, which I hope I am. I have yet seen this thing go into battery override mode. How do you know its in the mode? Does the charging lightning bolt in the battery go away or is there any type of visual? Yea I use ro always charge it with it off. I discovered the issue because i plugged it in one night and woke up the next morning and turned it on and it had not charged. So i started testing and sure enough with it powered off it would just keep throwing the white battery charging indicater on and off on and off. Thats what led me down this rabbit hole. This could explain why yours doesn't always go into bypass mode? Mabye.

Glad it fixed that issue at least. I do NOT think you have a bad unit. I think there is some sort of bug. I have owned DX320,180 and 260. None of them had charging issues. I have pics of DAP says its charging but battery level drops! I was using a Anker charger that I used with all 3 other Ibasso's I have owned. You can see the crazy charging behavior. I do not know if I had 1.01 FW on there or not but I think I did. DAP was plugged in that entire time. Sure took ages to charge finally to 100%.

 

[jstuart83]

Glad it fixed that issue at least. I do NOT think you have a bad unit. I think there is some sort of bug. I have owned DX320,180 and 260. None of them had charging issues. I have pics of DAP says its charging but battery level drops! I was using a Anker charger that I used with all 3 other Ibasso's I have owned. You can see the crazy charging behavior. I do not know if I had 1.01 FW on there or not but I think I did. DAP was plugged in that entire time. Sure took ages to charge finally got

Something is defiantly up with the devices if your having some issues charging it kinda goes along with what I'm seeing. Hopefully more people are reading the posts and understand what im saying and can confirm. Hopefully bloom will have done there testing done by Thursday or Friday next week with the multitude of charging devices I sent them.

 

[mattclarke18]

Something is defiantly up with the devices if your having some issues charging it kinda goes along with what I'm seeing. Hopefully more people are reading the posts and understand what im saying and can confirm. Hopefully bloom will have done there testing done by Thursday or Friday next week with the multitude of charging devices I sent them.

I hope the pics help others see what to watch for. I am rooted so it was mostly dismissed by Paul. I can understand most companies would say I voided my warranty so greatful they are OK with it. This is one of the reasons I just bought another power bank and doing battery bypass all the time as I need it for super gain anyway. The unit I was using at that time was the one I bought new from Bloom. I have faith that Ibasso will come out with a FW fix that will take care of this. Both my 340s have had the issue of running off battery when plugged into battery bank when plugged in powered on so very unlikely it's a hardware issue.

 

[PedroBrother]

Thanks for the report I've sent a bunch of PD chargers and battery packs to Bloom audio for testing. I Basso wanted me to return my unit but I had the feeling its something with the firmware. Ifot in about 400 dollars of chargers and battery packs today to try. So far ive tried a u green and an anker 35 watt charger both which are iQ. They both have worked fine. Im almost positive that there are some issues with chargers over 35 watts and PD. 65 watt chargers are hit or miss. If you are plugging in your DX340 and notice it start to charge then stop then began to charge, I urge you to speak up. It should go from charging on the lock screen to fast charging without dropping the power. Thats not normal behavior. I feel iBasso either needs to correct this or add a charger in the box, or at least put on the website what specs to use for the charger. Pedro you are the second person that has confirmed this behavior for me thank you.

Using a USB C cable with a 100W charger gives DX 340 the charging behaviour that you've already described. Though, when using the supplied USB A to USB C cable, charging proceeds as it should be with the same charger. So, I concluded that the problem is with the different types of USB C charging cables. The one that gives iBasso a headache is 100W Baseus USB C cable

 

[Sonywalkmanuser]

Using a USB C cable with a 100W charger gives DX 340 the charging behaviour that you've already described. Though, when using the supplied USB A to USB C cable, charging proceeds as it should be with the same charger. So, I concluded that the problem is with the different types of USB C charging cables. The one that gives iBasso a headache is 100W Baseus USB C cable

This could be a complicated charging communication protocol bug/issue with your 100W charger(or the e-marker chip in your 100W Baseus cable) and the iBasso dap’s battery management chip/android OS’s battery management service. I would suggest to try changing the charger and charging cable to another brand/model or charge via computer port to see if this fixes the issue.

Personally for myself, I would recommend to purposely rate limit the charge going into the dap by using a USB-A to C cable. 5v 2A would be sufficient to power this dap’s processing side. Charging faster would ultimately cause more wear and tear to the battery in the long run versus charging at a slower, but sufficient enough rate.

 

[Rob49]

Only just having received my player I have charged with the supplied cable connected to my old laptop. Didn’t really make a definite note of time & didn’t run the battery to very low level. I have used my Anker 5v 2A charger plug, with a USB-A to C cable, that I purchased recently, for another device, so that came in handy. Again, I didn’t make a specific note of time, it was while I was getting ready & when I finished getting ready, sorting things i needed to, I went to check & it was fully charged. ( I don’t even know about a rapid charging setting ? I’ve not really looked too much at any settings on my player yet. ) As we know, there’s just a very, very basic set up guide, which says really nothing, which you get with most goods nowadays.

 

[quaddac]

It did fix the issue I was having with upscaling to dsd 256 in neuron player with the screen off, as soon as the screen went off it would start skipping and cutting out, so it was a good thing. Honestly you don’t need a usb tester. If you plug in the dx340 on the lock screen at the bottom it will say charging. At this point its running 5v give or take 2 amps. Once it negotiates with the charger for fast charge which is where they’re getting there charge time of 2.5 hours on the web site it will go to charging rapidly. At that point it goes to the 9v give or take 1.67 amps. If your using the 65watt port for the 12v out and its a PD charger if you plug the 340 in to that slot with out a full battery Im almost willing to bet you will see what Im describing. The battery will go green and the screen will twinkle then the charging message will go away and the battery indicator will go white agin. A split second later you will see it say charging and the battery go green again then the screen twinkle agin. It may do this twice or three times it may never stop till you unplug it, Its very sporadic. Some chargers will act right 90 percent of the time some 50 percent of the time, others 20 percent and some never. Anker products seem to be the biggest issue. Ive tried it on two new anker banks I got in today and one 35 watt anker pd that did it to me about 3 times out of the ten I plugged it in and out. The other is a u green one. It seems to be be ok but its 33 watt. The two other anker banks were no good, unless your running on the usba. As for the inline tester this is the one Im using.
https://a.co/d/4aIaGdg
Ive tried this thing on probity 2000 dollars of charging equipment and the only thing that works every time is usba which is not PD standards and not as smart… I may have already said this but its weird they give you a usba to usbc cable. Which tells me it wasn’t designed to utilize PD standards. If it did why not a just include a usbc to usbc? If that's the case they haven't been very forthcoming coming about it. One would assume PD works correctly. The Astell&Kern Kann ultra says on there website the unit is PD 3.0 and QC 3.0 compatible. I didn't have any of these issues with it. As I said I'm not knocking them its still a good product I may just actually have a bad one and I may be 100 percent wrong, which I hope I am. I have yet seen this thing go into battery override mode. How do you know its in the mode? Does the charging lightning bolt in the battery go away or is there any type of visual? Yea I use ro always charge it with it off. I discovered the issue because i plugged it in one night and woke up the next morning and turned it on and it had not charged. So i started testing and sure enough with it powered off it would just keep throwing the white battery charging indicater on and off on and off. Thats what led me down this rabbit hole. This could explain why yours doesn't always go into bypass mode? Mabye.

Have you calibrated the battery? Which FW version? Don't use 1.00.179.

https://www.head-fi.org/threads/dx3...pdate-amp16-nos-tube-amp.974099/post-18576237

Before doing this, do a factory reset just in case.

 

[davidmolliere]

Already emailed Paul some time ago since I am skipping AMP16 and he told me they are still working on them and he doesn't have any details yet to share. If I want tube card I will get a AMP14 used. AMP15 with Super Gain already matches my preferences. Those that have AMP14 has anyone put a faraday cage over Nutube to see if that removes WIFI interference issue completely?

AMP14 has NuTubes
AMP16 has JAN6418 Tubes (like Shanling M8T) and also supports DC mode.

So different propositions