![]() Modified output stage - DAC direct output using nos ERO MKT capacitors and metal film resistors.Ģ. A separate output stage was added leaving all existing electronics intact, the signal is "stolen" directly from DAC output without removing any electronic components.ġ. ![]() I modified the power supply, laser pickup, and the chassis. The modifications performed on this player makes it a truly excellent sounding piece of equipment. 5501 uses a better laser pickup assembly, it is auto-biasing for proper tracking (important for reading CDR) and positioned further from power supply to avoid interference and heat. Model SCPH-5501 uses the same Asahi Kasei AK4309AVM DAC as Model SCPH-1001 which gives this player a superb audio quality with lots of detail, dynamics and resolution. Modifications to this player yield excellent sonic results. Sony did a great job putting in excellent DAC in its early Playstation models. I modified and burned it in on my audio system. This is my "Signature" modified Sony PS-1 "Playstation" CD Player, SCHP-5501.
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