Playstation as CD Player
Hi gents,
This is my first post on this forum. Since quite a time I have been dealing with the use of playstations as CD player. So far my findings are following:
There are substantial differences between the various versions of the PSX, i.e. SCPH1002, SCPH5502, SCPH7502. There are more (SCPH7002, 9002,…) but I did not examine and test them.
Types 1002 and 5502 are using DACs of type AK4309 from Asahi-Kasei (discontinued delta-sigma DAC), whereas 1002 has got an OPAMP following the DAC the 5502 don`t. 7502 is built completely different, the audio signal just comes out of one of these big chips (I assume a DSP) and is fed to an I/V converter.
So what PSX is sounding best? This question can not easily be answered because hooking up the PSX to a preamp is not that straightforward. The older version (SCPH1002) has got RCA jacks, the others do not. So you must find a way to connect your “good” cables to the PSX in order to allow comparable conditions for listening tests. Still my evaluation goes on but so far I would say that to my ears the 1002 version sounds best. It would be interesting to hear about the experiences of other members. For the future I am planning to improve the AF stage. I would like to replace the Opamp that is following the DAC (NJM2100) by an OPA2134. Has anyone done this before, any results?
Pozo1992