I am working to improve this player, it has has the CDM4/19 laser and TDA1541A DAC.
I have already bypassed several electrolytic caps in the signal path and OP amps has been changed from 4558 and LF353 to OPA 2134, this clearly improved the sound.
I have a couple of questions regarding further upgrades
I can see that removal of muting transistors and replacing the decoupling caps around the TDA 1541 are suggested in some treads.
Will the NPN muting transistors effect the sound in the case where the base resistors goes negative -15V when playing ?
The 14 decouplings caps on the TDA 1541 are 100nF SMD ceramic types, I have seen people replaceing with MKP and other types, and thereby add a lot of inductance. Can the 100nF stay or is there better alternatives?
Other suggestions are welcome
I have already bypassed several electrolytic caps in the signal path and OP amps has been changed from 4558 and LF353 to OPA 2134, this clearly improved the sound.
I have a couple of questions regarding further upgrades
I can see that removal of muting transistors and replacing the decoupling caps around the TDA 1541 are suggested in some treads.
Will the NPN muting transistors effect the sound in the case where the base resistors goes negative -15V when playing ?
The 14 decouplings caps on the TDA 1541 are 100nF SMD ceramic types, I have seen people replaceing with MKP and other types, and thereby add a lot of inductance. Can the 100nF stay or is there better alternatives?
Other suggestions are welcome
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