2. analog
  3. 137728-101728

Phonostage opamp replacement 22v

 

Hello,

I want to upgrade the old opamp in my phonostage. The voltage 22+/-

Ive used in my SU-V8s OPA1612 but they were 17+- V


I have in my box OPA1642 and LME49860?

? any thoughts

Thank you

Sam


https://ibb.co/f70KDK 

Schematic


128x128technicshififan
sleepwalker65's avatar
sleepwalker65
832 posts
 
I second the Burson Audio discrete op-amp. While I’ve not yet tried them, in principle I love the idea. Plan to get some V6 units for my NAD PP2 which I’ve already upgraded the power supply on from a wimpy AC adaptor to a LM7824 regulated supply with 4700uF pre-reg filtering and a Schottky rectifier diodes. 
imhififan's avatar
imhififan
2,181 posts
 
The +/- 22V supply voltage limiting your choices : (
technicshififan's avatar
technicshififan OP
5 posts
 
Thank you Glennewdick and Sleepwalker65. I know of the Burson, they are expensive, but heard good things about them, space would not be an issue as its plenty of room, even put film caps in place of the 4.7uf bipolar caps? maybe

THanks Imhififan,  only one i can see in the LME49860, which isnt bad for a cheap opamp.

imhififan's avatar
imhififan
2,181 posts
 
only one i can see in the LME49860, which isnt bad for a cheap opamp.
Another cheap opamp that work @ + / -22V : OPA2604
More to discover