op-amp supply voltage

[arthur]

i am going to make a simple preamp with opamp such as opa627,what is the optimal supply voltagecan give the best sound quality

many thanks
Arthur

 

[Nuuk]

I prefer +/-18v with the OPS627.

 

[arthur]

if i can only have +- 9v ,what op amps are more suitable?
Thanks in advance.

 

[Nuuk]

I can't really comment as I have never used those voltages. I have used the OPA134 down to +/-12v so that may be worth a try!

 

[satoru]

Hi,

LME49710 is specified from ±2.5V supply and it is a nice low-distortion OP-AMP. People tends to prefer higher voltage for more dynamic range above the noise floor (which is fixed by the temperature, etc).

Good luck with your project!
Satoru

 

[cpemma]

You may find this list useful, though note the application is headphone amps.

 

[KP11520]

Tangentsoft (see previous post) also sells something you can use for a PS.

http://tangentsoft.net/shop/

Search the whole site. Lots of good info and the 627 gives great results if you design the circuit correctly with optimum voltage. Do your research!

Regards//Keith