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The iBasso DX50 Thread - Latest firmware: 1.9.4 - January 24, 2016 - Page 285

post #4261 of 18427

Hasn't taken long for the Mod's to start flowing through for the DX50 then....

 

I wonder if Vinnie at RWA would be looking at the demand for modding the DX50 and offer it as an option alongside his iPod / AK100 / AK120 mods??

 

I wonder if there is the opportunity to replace the WM8740 DAC with the WM8741 DAC and also configure the DAC in the same way as the AK100-S. I assume potentially the Line Out would stay the same and the HO would be disabled....Not sure how these changes would affect the Co-Ax out?

 

Now that would be interesting....However I am not an Electronics Engineer so may not even be possible.

post #4262 of 18427
Quote:
Originally Posted by T.R.A.N.C.E. View Post

Well in the first link the mod is to, replace the LPF op amp with an AD8620 op amp, this is the first chip that filters the DAC signal, He says with stock LPF there is low frequency issues, which the 8620 fixes. Then he replaces two of the Amp section op amps with AD 797 op amps, saying has a more popular sound signature, probably a bit warmer and a bit bassier overall i'm guessing from my experience with ad8620 and ad797. Then he replaces stock capacitors with Elna caps, saying increasing the capacitance improves sound field, probably means sound stage.

What would have been  awesome is if iBasso had made all these opamps rollable, would save modders a lot of hassle, wouldn't really impact the cost of the player very much, and would allow every one to customize their sound, now I have to mess around with a soldering iron again..

I'm not sure I would want to use the AD797 in the DX50 as the minimum supply voltage is +/-5v. The DX50 uses a single sided 4.7v supply. The AD797 would be operating well below its optimum supply voltage. In some circuits, I have found that the AD797 will remain silent when used below its recommended supply voltage. The AD797 tends towards a bassy and thick sound, not one that I would by any means call neutral. IMO, changing the LPF opamp has minimal effect on SQ, much less than the DAC chip itself. The AD8620 also calls for a +/- 5v minimum supply voltage for proper operation.

I also think the stock cap values are very appropriate for this type of player which has a relatively low current output when compared to desktop amps. They are also of quite high quality.

All that being said, I will avoid the temptation to modify my DX50.

There really is no room inside the DX50 to fit sockets and opamp adapters and desoldering stock opamps that are wave-soldered to a circuit board is not a tasl for the faint-of-heart!
Edited by HiFlight - 10/18/13 at 4:52am
post #4263 of 18427

does anyone compared dx50 with hisoundaudio rocoo series in terms of Sound?

post #4264 of 18427
Quote:
Originally Posted by jaganeee View Post

does anyone compared dx50 with hisoundaudio rocoo series in terms of Sound?

The little Rocco BA can give DX50 a run for its money imo. Its crisper cleaner and superior in separation, soundstage and coherency. Purely sound only though, throw all the ui and features DX50 has away. I find my Rhapsodio hybrid sounds much better on the little Rocco.
post #4265 of 18427
Quote:
Originally Posted by HiFlight View Post


I'm not sure I would want to use the AD797 in the DX50 as the minimum supply voltage is +/-5v. The DX50 uses a single sided 4.7v supply. The AD797 would be operating well below its optimum supply voltage. In some circuits, I have found that the AD797 will remain silent when used below its recommended supply voltage. The AD797 tends towards a bassy and thick sound, not one that I would by any means call neutral. IMO, changing the LPF opamp has minimal effect on SQ, much less than the DAC chip itself. The AD8620 also calls for a +/- 5v minimum supply voltage for proper operation.

I also think the stock cap values are very appropriate for this type of player which has a relatively low current output when compared to desktop amps. They are also of quite high quality.

All that being said, I will avoid the temptation to modify my DX50.

There really is no room inside the DX50 to fit sockets and opamp adapters and desoldering stock opamps that are wave-soldered to a circuit board is not a tasl for the faint-of-heart!

 

I agree, but I still wish ibasso made the dx50 op amp rollable, that would have been ultimate. One of my favorite all time combos is ad797 as buffers with lhm6643 and ad8066, such a thick but beautiful sound, made my ibasso p3+ sound just like a great tube amp :D

post #4266 of 18427
Quote:
Originally Posted by jaganeee View Post
 

does anyone compared dx50 with hisoundaudio rocoo series in terms of Sound?

I have the hisoundaudio rocoo p, the hiss is so incredibly terrible, in softer passages of the song, the hiss will actually overpower the music.

However, with less efficient headphones, the rocoo p is quite good, it's a very euphoric sounding player with a very good soundstage. Not technically fantastic, but fun!

I'm sure the DX50 beats the rocoo p on every aspect.

 

Quote:
Originally Posted by H20Fidelity View Post


The little Rocco BA can give DX50 a run for its money imo. Its crisper cleaner and superior in separation, soundstage and coherency. Purely sound only though, throw all the ui and features DX50 has away. I find my Rhapsodio hybrid sounds much better on the little Rocco.

So there is no hiss with the BA version?

post #4267 of 18427
Quote:
Originally Posted by Marleybob217 View Post

I have the hisoundaudio rocoo p, the hiss is so incredibly terrible, in softer passages of the song, the hiss will actually overpower the music.
However, with less efficient headphones, the rocoo p is quite good, it's a very euphoric sounding player with a very good soundstage. Not technically fantastic, but fun!
I'm sure the DX50 beats the rocoo p on every aspect.

So there is no hiss with the BA version?

What about with amped? smily_headphones1.gif
post #4268 of 18427
Quote:
Originally Posted by Marleybob217 View Post
 

So there is no hiss with the BA version?


I don't have any hiss issues with the Rocco BA, my Studio V (2nd Edition) hisses annoyingly with certain low impedance IEM's, ok with fullsize headphones and IEM like 100ohm ER4S. Rather strange the Studio, because I could use 50ohm GR07 and experience hiss but run 12ohm XBA3 were silent. Really hit and miss with that thing.


 

Quote:
Originally Posted by puskuruk View Post


What about with amped? smily_headphones1.gif


If you amp Studio V the hiss disappears completely,  and it sounds mighty fine, even double amping. DX50 is not completely free of hiss, but it's much more manageable than what the Studio's HO spits out.


Edited by H20Fidelity - 10/18/13 at 5:30am
post #4269 of 18427
Quote:
Originally Posted by H20Fidelity View Post


The little Rocco BA can give DX50 a run for its money imo. Its crisper cleaner and superior in separation, soundstage and coherency. Purely sound only though, throw all the ui and features DX50 has away. I find my Rhapsodio hybrid sounds much better on the little Rocco.

 

i am having westone 4. hope it can better paired with rocoo BA when compared with dx50

post #4270 of 18427

Appologies if this has been covered elsewhere in this thread......I have a question with regards to album artwork on the DX50.

 

I have a 65Gb Sandisk MicroSd card....My music is saved on this as - Artist -> Albums -> Tracks

 

When I am Browsing the SD Card I take the route Directory - SD Card - Choose Artist - Choose Album - Choose track and Play (my listening usually consists of listening to whole albums...rather than playlists or individual songs). The only time I can actually see the album art is when I press play and it then transfers to the main screen.

 

I cant see album art When I look at Artist, Albums or Tracks........is this right or is it down to the way I have the album art tagged????

 

If you look at the photos of the DX50 screenshots on the iBasso page it does show a list of albums which have artwork next to them...just curios.

 

If you can get it to show album art at all stages....how would I go about this....I assume I need to retag things, but never had to do this and wouldnt know where to start.

post #4271 of 18427
Quote:
Originally Posted by jaganeee View Post
 

 

i am having westone 4. hope it can better paired with rocoo BA when compared with dx50


I'd speak to some people who are pairing Westone 4 with DX50, I have a funny feeling it might be a decent set up,  I sold Westone 4 before receiving my DX50 so couldn't try. If you're already using Colorfly C3 with W4, I would still lean towards DX50 as your upgrade. I have paired Westone 4 with Rocco BA, it was nice but nothing like the synergy I'm getting from these new hybrids with the Hisound player.

A lot is going to depend on the synergy.

post #4272 of 18427
Quote:
Originally Posted by Jason36 View Post
 

Appologies if this has been covered elsewhere in this thread......I have a question with regards to album artwork on the DX50.

 

I have a 65Gb Sandisk MicroSd card....My music is saved on this as - Artist -> Albums -> Tracks

 

When I am Browsing the SD Card I take the route Directory - SD Card - Choose Artist - Choose Album - Choose track and Play (my listening usually consists of listening to whole albums...rather than playlists or individual songs). The only time I can actually see the album art is when I press play and it then transfers to the main screen.

 

I cant see album art When I look at Artist, Albums or Tracks........is this right or is it down to the way I have the album art tagged????

 

If you look at the photos of the DX50 screenshots on the iBasso page it does show a list of albums which have artwork next to them...just curios.

 

If you can get it to show album art at all stages....how would I go about this....I assume I need to retag things, but never had to do this and wouldnt know where to start.

I get album art in all lists except the track list after choosing an album. I used MP3Tag to clean up all my tags and add artwork. I have had no issues with artwork since. MP3Tag will search for the artwork and you can automatically add it or you can search for it yourself and copy/paste it in.

post #4273 of 18427

After trying for 2 days now to copy some music onto my microSD card (SanDisk Ultra 64GB Micro SDXC) I have come to the conclusion that the card must be broken, although it worked fine before in my SGS3.

Now before I randomly buy an new one: which 64GB card can you recommend out of experience to work flawlessly with the DX50?

 

Thanks!

post #4274 of 18427
Quote:
Originally Posted by pOOB73 View Post
 

After trying for 2 days now to copy some music onto my microSD card (SanDisk Ultra 64GB Micro SDXC) I have come to the conclusion that the card must be broken, although it worked fine before in my SGS3.

Now before I randomly buy an new one: which 64GB card can you recommend out of experience to work flawlessly with the DX50?

 

Thanks!

That's the card I use exclusively and have no issues. Have you tried reformatting? Tried the card in another device? How are you transferring the data?

post #4275 of 18427
Quote:
Originally Posted by T.R.A.N.C.E. View Post
 

 

Well in the first link the mod is to, replace the LPF op amp with an AD8620 op amp, this is the first chip that filters the DAC signal, He says with stock LPF there is low frequency issues with roll off, which the 8620 fixes and creates a flat frequency response. Then he replaces two of the Amp section op amps with AD 797 op amps, saying it has a more popular sound signature, probably a bit warmer and a bit bassier overall i'm guessing from my experience with ad8620 and ad797. Then he replaces stock capacitors with Elna 220uf caps, saying increasing the capacitance improves sound field, probably means sound stage, but the stock caps are also 220uf. so maybe he just thinks Elna sound better, or he didnt know the stock spec.

 

What would have been awesome is if iBasso had made all these opamps rollable, i would be in heaven if they did this, would save modders a lot of hassle, wouldn't really impact the cost of the player very much, and would allow every one to customize their sound, now I have to mess around with a soldering iron again.. ffs

thank you for translating the posts. Well, some ppl perceive the changes of sound as improvement, probably it is actually worse? It is just too subjective. I think the most convincing and most sense making of mods are always from RedWineAudio which they only do bypassing and modding only whatever necessary for the purest audio signal possible?

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