Author Topic: types of OPA2134

April 13, 2021, 03:19:59 PM
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conorc

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Hi all,

I have just finished building a pair of TS500s and everything went smoothly except for one little issue. On one unit, the OPA2134 was in backwards, so when i plugged it in I noticed some magic smoke. I powered it down in a hurry and there's no major damage done it seems –the 2134 from the other unit works fine in there and it all sounds great, but I have a couple of questions as I want to use these 2 units in stereo and to make sure that there's no issues.

1. I can get Texas Instruments OPA2134s more easily and cheaply than Burr Browns. Would there be a sonic difference if I used one in one unit? (again, thinking about stereo applications)

2. Might the power transistor (Q1) have been damaged by the reversed opamp and should I replace that too?

Thanks!

April 14, 2021, 10:32:20 AM
Reply #1

JPK

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1- Yes you can use Texas 2134. I am sure you won't hear a difference.
2- Bipolar transistors are all good or all dead. If it works, don't fix it.
JPK

April 15, 2021, 05:20:10 AM
Reply #2

conorc

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Fantastic, thanks!