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CharlesC
1
Jul 31, 2017
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are the opamps rollable?
Jul 31, 2017
andyo
52
Jul 31, 2017
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The OP amp in the DAC is a single dual OP amp chip TI OPA2134, and it is soldered permanently. There are two dual OP amp chips (the same) in the A30. They are mounted on a socket, so they are easy to replace. If you are thinking of rolling them, I can recommend Sparkos Labs discrete OP amps. They might be expensive, but the effect is rather stunning.
Jul 31, 2017
Ostewart
243
Jul 31, 2017
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Op-amp rolling in the A30 is easy, the Burson V5i is also an excellent op-amp to look into, it's what I have in my A30.
Jul 31, 2017
CharlesC
1
Jul 31, 2017
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the A30 has 2 dual opamps? or did you mean 2 single channel?
Jul 31, 2017
andyo
52
Aug 1, 2017
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Yes, two dual OPA2134 amps. See the product page: http://www.tpdz.net/en/products/a30/index.htm There is a block diagram.
Aug 1, 2017
CharlesC
1
Aug 1, 2017
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Ok i see it now. how strange.
thanks for the link! http://www.tpdz.net.img.800cdn.com/en/products/a30/a30-18.jpg
Aug 1, 2017
bigjim
162
Aug 18, 2017
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How did the Burson op-amp change the sound of your A30?
Aug 18, 2017
bigjim
162
Aug 21, 2017
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How would you describe the improvements using the Burson op-amps?
Aug 21, 2017
Ostewart
243
Aug 21, 2017
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The soundstage gained width and depth, the sound became more natural and detailed. It is not a night and day difference, but definitely took the A30 up a notch and I am really happy with it:

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Aug 21, 2017
bigjim
162
Aug 21, 2017
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Thanks. I am going to try this... just for fun!
Aug 21, 2017
datyeti
45
Oct 5, 2017
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Have you tried rolling the opa2134 with the sparkos? I'm curious to know how it would change sound, and which model number in particular you are referring to.
Oct 5, 2017
datyeti
45
Dec 20, 2017
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Whoops. silly mistake. Meant to say burson or sparkos op amps and which model number.
Dec 20, 2017
berant89
1
Jun 18, 2020
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By chance do you have any experience between the Sparkos and Burson V5i for the A30? Would it also make sense for me to change the op amp on the D30 to the matching discrete op amp?
Jun 18, 2020
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