Hello to all 
I will try to keep this post with max information. So, I would like to change op amp in Yamaha amplifier.
Yamaha amplifier details: Yamaha AX-10 - Manual - Stereo Integrated Amplifier - HiFi Engine
Service manual with schematics: AX-10.pdf
The CD input has two NJM2068DD
Datasheet: https://cz.mouser.com/datasheet/2/294/NJM2068_E-364244.pdf
After research I would like to try two op amps.
First op amp: LME49720
Datasheet: http://www.ti.com/lit/ds/symlink/lme49720.pdf
Second op amp: LM4562
Datasheet: http://www.ti.com/lit/ds/symlink/lm4562.pdf
The QUESTION is:
May I just simply remove NJM2068DD
and place there new op amp? I did reading and checking and I noticed I should solder correct value resistor to avoid oscilation.
So what resistor R270/R271 from Yamaha scheme should be there when I use LME49720 and after trying what R should be used for LM4562 please?
All what I want is much better op amp. But as we know, it's not that easy. Or is it?
Thank you VERY much!
Milan
I will try to keep this post with max information. So, I would like to change op amp in Yamaha amplifier.
Yamaha amplifier details: Yamaha AX-10 - Manual - Stereo Integrated Amplifier - HiFi Engine
Service manual with schematics: AX-10.pdf
The CD input has two NJM2068DD
Datasheet: https://cz.mouser.com/datasheet/2/294/NJM2068_E-364244.pdf
After research I would like to try two op amps.
First op amp: LME49720
Datasheet: http://www.ti.com/lit/ds/symlink/lme49720.pdf
Second op amp: LM4562
Datasheet: http://www.ti.com/lit/ds/symlink/lm4562.pdf
The QUESTION is:
May I just simply remove NJM2068DD

So what resistor R270/R271 from Yamaha scheme should be there when I use LME49720 and after trying what R should be used for LM4562 please?

All what I want is much better op amp. But as we know, it's not that easy. Or is it?
Thank you VERY much!

Milan