SONY DTC-690 is downgrade version of  DTC-59ES

DTC-690 Display

DTC-690  Door

DTC-690_Inside

DTC-690_motherboard:

Crystal CS5339 16-bit 2-channel A/D converter using two 1-bit delta-sigma modulators, 64 X sampling rate

D/A Converter is 1-bit CXD2561M Sony (PULSE) chip

DTC-690 Tape transport mechanism DATM-102

DTC-690_head

DTC-690_part of PS board

DAT cassette in                                                                           Instruction label

DTC-690_Rear view

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