The stock ICs in my sony 999es DVD player's audio output stage are:

NJR model NJM2114 dual op amps.

I removed the analog board and then removed the three NJM2114s and insatlled three high quality 8 pin dip IC sockets.

I installed and am now evaluating Texax Instruments OPA2132 or Analog Devices AD826 dual op amps.

Both of these are a noticable improvement over the stock NJM2114 op amps.

The OPA2132 is used in the Sony xa777es player's anallog output stage.

Eventually, I would like to make adapter boards (I am working on the PCB layout) that will plug into the 8 pin sockets that will allow me to use single op amps per package: I would like to try the OPA627 and the AD843. Also this adapter board will have a DC servo circuit that will allow me to do away with the output coupling capacitor at the output of the 999es audio analog outputs. The xa777es has these capacitors also but impliments them better. The adapter board will have the option of a current source to bias the output of the opamps into class A for a few milliamps of output current to either the positive or negative voltage rail.

It would be best to layout a new analog output board, but buying all new quantities of audiophile-grade (audio jewelry grade and priced to match) resistors, capacitors, msc regulators, etc. would be very expensive for just one board, so I will modify the exitsing boards, which has at least good quauity passive components.

Inter Connects ?!?! OH!

Optical and electrical are:

Outlaw Audio, of course.

Paul

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the 1derful1
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the 1derful1