studeb
100+ Head-Fier
- Joined
- Nov 5, 2003
- Posts
- 368
- Likes
- 10
i have a philips CD721 player in my office with built in headphone amp. The amp is a NRJ4556, runs on +/- 12V, gain is 2.5
Would any of the following be likely improve the sound (which isn't bad but....)
Adding some caps to the +/- rails, i was thinking several k uF bypassed with polyprop or polystyrene
Swapping chips, if so to what? 2134?
The output goes through 120 Ohm then paralled to 1K Ohm. Can i jumper the 120 Ohm resistor?
There are no blocking caps on the headamp board, i am getting a pop at the end and beginning of each track, would adding caps help? Suggestions?
i do not have the scematics for this, and have not reverse engineered the main PCB yet.
Would any of the following be likely improve the sound (which isn't bad but....)
Adding some caps to the +/- rails, i was thinking several k uF bypassed with polyprop or polystyrene
Swapping chips, if so to what? 2134?
The output goes through 120 Ohm then paralled to 1K Ohm. Can i jumper the 120 Ohm resistor?
There are no blocking caps on the headamp board, i am getting a pop at the end and beginning of each track, would adding caps help? Suggestions?
i do not have the scematics for this, and have not reverse engineered the main PCB yet.
