DIY DAC opamp change

[tiger0691]

I opened the cover of PCM 1794 Dac to check opamp.
It has 6 opamps.
Last two (output part) opamps are mismatched.
One is cheap and the other one is expensive (TI 627BP)
My job is to do pair matching of the opamps.
627bp price in element14 is Rs. 2,483/- ...expensive..............

Is there any idea to get 2nd hand opamp?
My aim is pair matching

 

[mowgli80]

You could go for 627AP which is slightly cheaper but sounds the same. If you have anybody travelling to the US, you can order from digikey/mouser which will further reduce the cost as shipping will be considerably cheaper. Do keep in mind that 627* is a single opamp. If you are replacing a dual opamp, you will require 2 nos of 627* on browndog adapter as replacement.

 

[tiger0691]

You could go for 627AP which is slightly cheaper but sounds the same. If you have anybody travelling to the US, you can order from digikey/mouser which will further reduce the cost as shipping will be considerably cheaper. Do keep in mind that 627* is a single opamp. If you are replacing a dual opamp, you will require 2 nos of 627* on browndog adapter as replacement.

What I need are single opamp.
Thank you so much.:clapping:

 

[availlyrics]

You have not mentioned the other cheap opamp part no., may I suggest you to pls read NwAvGuy: Op Amps: Myths & Facts
Its very exhaustive in details/ comments

 

[tiger0691]

the only thing trust your ears.

Matter is that last two opamps are different.