Anyone interested in a diy headphone amp PCB ?

[dearchap]

I made one 3-4 years back and ordered the PCBs but didnt get around to stuffing them. If anyone is interested I can share the schematic. It consists of dual opamps and a chip selector for low/high gain.

 

[JayGilb]

I made one 3-4 years back and ordered the PCBs but didnt get around to stuffing them. If anyone is interested I can share the schematic. It consists of dual opamps and a chip selector for low/high gain.

I'm interested in the schematic.

 

[dearchap]

 

[JayGilb]

Thank you !

 

[TheBatsEar]

How does it measure and if it measures fine, is there a complete kit i can order on a whim?

 

[dearchap]

It uses 2 NE5534 low noise op amps followed by LM5321 unit gain buffers

 

[dearchap]

How does it measure and if it measures fine, is there a complete kit i can order on a whim?
View attachment 194970

Spice simulation showed it having a pretty flat response over audio band with very noise. I dont recall THD+N though. If there is any interest I can create a PCB

 

[dearchap]

Instead of having a gain amp first and then unity buffer, the feedback is taken at the output of the unity buffer amp instead of NE5532.