They look EXACTLY the same from this comparison https://audiosciencereview.com/foru...ecoder-headphone-amplifier.47766/post-1724110watch the video above, the boards are not exactly the same
They look EXACTLY the same form this comparison https://audiosciencereview.com/foru...ecoder-headphone-amplifier.47766/post-1724110
Yup, seems like they use the same components. According to Bing AI, they are identical "but (the d0400) has 2 more TI1612 opamps for IV stage (9 to11), different and heavier case, better screen, preamp mode, and sound color function, otherwise they are the same."They look EXACTLY the same form this comparison https://audiosciencereview.com/foru...ecoder-headphone-amplifier.47766/post-1724110
in my case, I paid less and got more since there was no discount on the d40pro, but if you compare, I think the do400 is better and justifies the higher cost, that's why the d40pro has problems with the firmware + the do400 software is more convenient and clearer the design of the do400 is better and 2 1612 is also good smsl is more well-known and it will be more convenient for me to sell it for years after 10 so I think the overpayment is definitely worth itd40 pro ~$430 while the do400 ~$500. Why the price difference since they use identical PC boards?
Hey...just ordered it last night through Aoshida. I could have ordered through Amazon and received tomorrow (via Amazon prime) but I would have to pay $35 on sales tax. Aoshida will take 2-3 weeks to ship to US but with free shipment and no taxes.Running good via I2S fed from Xing AF200 (aka Singxer SU-2) digital interface that also feeds a meter via Toslink.
Thank you for this review. Where can I find the XMOS modification firmware? Is it part of the driver? I believe the latest driver is dated June/July 2023, so the fact that the problem still exists in your new smaple is troubling.I just received the DO400 about 4 days ago so I'll give my quick initial thoughts.
I originally had a Burson Play which had lots of power but was lacking quite a few features I wanted and after 5 years it was starting to have some issues (volume nob wouldn't always work, noise and distortion particular with sensitive headphones).
I was planning on buying one of the standard recommendations such as: Topping DX3Pro+, Topping E30 II/L30 II, JDS Atom+ Stack, JDS Element 3, FiiO K7, etc.
However, when I was looking, I noticed this new DO400 and it wasn't too much more expensive than the other options so I impulse bought it.
So far, sound quality wise and feature set wise I'm extremely happy. The only things I've changed so far are:
PCM Filter: Linear Fast
HPA Gain: Low
Sound Color: Standard
Pre Mode: Fixed
This all in one has all the features I wanted + room for additional things in the future which is awesome. Plenty of power and a super clean signal even for my sensitive headphones and IEMs. I'm mainly using this with Hifiman Arya Stealth and Beyerdynamic DT1990 but tested with Sennheiser HD6XX, Sennheiser IE300 and Kiwi Ears Orchestra Lite as well.
My only issues/complaints so far are:
1. Audio delay when first starting and if you don't do the XMOS audio delay fix (to enable Always On audio streaming) then after 5 seconds of no audio, the dac/amp will go to "sleep" and there will be another audio delay. This can the fixed with the XMOS modification but still important to call out.
2. I'm getting occasional stuttering on my PC and I'm not 100% sure it's related to the DO400.
When I turn the DO400 on and off, I definitely get stuttering on PC but this may be normal? I'm not sure.
As for regular use, I'm not sure whether or not the DO400 in responsible for recent stuttering, I'm still troubleshooting .
My only thoughts could be: USB3.0 port issues (I have no USB2.0 ports to test with) or XMOS/SMSL Drivers
I was just referring to this thread here: https://www.audiosciencereview.com/...os-driver-settings-for-no-cutoff-delay.25838/Thank you for this review. Where can I find the XMOS modification firmware? Is it part of the driver? I believe the latest driver is dated June/July 2023, so the fact that the problem still exists in your new smaple is troubling.
Yeah, I've had legacy devices (Logitech wireless mouse/keyboard dongle) that will not play well in USB 3.0 slots but works fine in 2.0 slots. Not sure why.