Opamp rolling in iBasso D10 for DT1350s
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supra1988t

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I bought an iBasso D10 used to go with my beyerdynamic DT 1350s and they sound great together, however I'd like to get a slightly warmer/bassier tone without things getting too muddy.  The amp came with the opamp rolling kit but I'm having trouble finding information on where to start with opamp rolling, specifically with the D10 as the user manual is a joke.  I don't want to fry anything.  
 
Currently in the D10 there are two opamps (buffers?) in the two slots behind the headphone jack. They read:
AD 739
8532A
G36928
 
On the Aux side of things there are two amps/buffers? on one board.  They read:
86c4r8m
tle2141p
 
The opamp kit contains:
 
2X AD8656
2X LMH66
2X dummies
2X 8201|SZ
    8728P7
1X ADA
     4841
     2YRZ
 
Any suggestions?
 
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Mad Max

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HiFlight

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Quote:
I bought an iBasso D10 used to go with my beyerdynamic DT 1350s and they sound great together, however I'd like to get a slightly warmer/bassier tone without things getting too muddy.  The amp came with the opamp rolling kit but I'm having trouble finding information on where to start with opamp rolling, specifically with the D10 as the user manual is a joke.  I don't want to fry anything.  
 
Currently in the D10 there are two opamps (buffers?) in the two slots behind the headphone jack. They read:
AD 739
8532A
G36928
 
On the Aux side of things there are two amps/buffers? on one board.  They read:
86c4r8m
tle2141p
 
The opamp kit contains:
 
2X AD8656
2X LMH66
2X dummies
2X 8201|SZ
    8728P7
1X ADA
     4841
     2YRZ
 
Any suggestions?
The single socket closest to the volume control is the L/R socket.
The dual sockets closest to the large caps are the buffer sockets.

If you want a warmer SQ, try the following: 
 
TLE2141 in the L/R socket.  That is the one that has 2 mounted on one adapter. 
2x EL8201 in buffer sockets
 
Another combo with a nice warm SQ:
 
A single LMH6643 in the L/R socket and one dummy in each buffer socket. 
 
Note carefully the orientation of the opamps before you remove them, especially the direction that the
small white square around the #1 pin is pointing.  Install all opamps facing the same way.  Correct polarity is critical.
 
Good luck!   Let me know how these work for you.
 
Ron
 
 
 
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supra1988t

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Thanks guys. I will give those threads a read and I will try those amp combos tonight when I get home.
 
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supra1988t

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Well being the newb that I am, I'm having a hard time distinguishing between some opamp/buffer combos, lol.  Ive tried about 18 different combos and I feel like I've lost my "baseline". 

 
Apparently the last owner changed the amps out so I did not receive it "stock".  While playing with the different combos I found that I like the ADA4841/AD8532 which I later find out is the actual stock config.  So far I think I like the TLE2141/EL8201 combo the most so I'll leave it in for a few days to get a better feel for it.  When you guys are doing listening comparisons, do you try and listen for a few minutes at a time or do you listen a lot longer to get a better "feel"?
 
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Mad Max

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Listen for a few minutes to a track, swap, listen to the same track, swap, and so on.
 
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HiFlight

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The TLE2141/EL8201 combination is the D10 Topkit that the previous owner purchased.  
 
Quote:
Well being the newb that I am, I'm having a hard time distinguishing between some opamp/buffer combos, lol.  Ive tried about 18 different combos and I feel like I've lost my "baseline". 

 
Apparently the last owner changed the amps out so I did not receive it "stock".  While playing with the different combos I found that I like the ADA4841/AD8532 which I later find out is the actual stock config.  So far I think I like the TLE2141/EL8201 combo the most so I'll leave it in for a few days to get a better feel for it.  When you guys are doing listening comparisons, do you try and listen for a few minutes at a time or do you listen a lot longer to get a better "feel"?


 
 
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qawsedrf

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**** good reason why he ended up loving it eh, Ron. :cool:
 
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