At your own risk.
The analog input stage (small board) was removed.
The RCA input connectors are connected directly to an A-B MOD POT 500Ω stereo log potentiometer. The center taps are connected through capacitors directly to the A to D chip.
The chip still has one? internal op amp at its input?
Cons of the mod. More difficult to drive properly. The input impedance is low. But this could be changed with a different potentiometer.
Pros of the mod.
Pro audio equipment can be connected directly, tube preamps, compressors etc. The near 600Ω input impedance matches them greatly.
Solving the problem of the Philips analog board op amps clipping.
Very loud CDs can be burned.
Great sound.
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