CD player/Transport with top loading mechanism. S503 has 1 x Line and 2x coaxial outputs.
S503t CD transport without DAC
S503v (voltage-mode): Line Output: RCA
S503i (current-mode): Line Output: RCA for current-mode
Digital Outputs: 2 x S/PDIF (coaxial)
DAC: Philips TDA1543 16 bit non-oversampling DAC
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