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CharlesC
1
Jul 31, 2017
are the opamps rollable?
andyo
55
Jul 31, 2017
CharlesCThe 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.
Ostewart
246
Jul 31, 2017
andyoOp-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.
CharlesC
1
Jul 31, 2017
andyothe A30 has 2 dual opamps? or did you mean 2 single channel?
andyo
55
Aug 1, 2017
CharlesCYes, two dual OPA2134 amps. See the product page: http://www.tpdz.net/en/products/a30/index.htm There is a block diagram.
CharlesC
1
Aug 1, 2017
andyoOk i see it now. how strange.
thanks for the link! http://www.tpdz.net.img.800cdn.com/en/products/a30/a30-18.jpg
bigjim
162
Aug 18, 2017
OstewartHow did the Burson op-amp change the sound of your A30?
bigjim
162
Aug 21, 2017
OstewartHow would you describe the improvements using the Burson op-amps?
Ostewart
246
Aug 21, 2017
bigjimThe 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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bigjim
162
Aug 21, 2017
OstewartThanks. I am going to try this... just for fun!
datyeti
45
Oct 5, 2017
andyoHave 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.
datyeti
45
Dec 20, 2017
datyetiWhoops. silly mistake. Meant to say burson or sparkos op amps and which model number.
berant89
1
Jun 18, 2020
andyoBy 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?
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