This is a logic-controlled deck.
The manual specifies: Use only the supplied SS-D507 speakers (6 ohms). If you are replacing them, ensure your new speakers are . Do not use 4-ohm car speakers; you will burn out the TA-D507 amplifier’s STK (hybrid IC) module. sony lbt-d507 user manual
: Integrated components for multi-disc playback and dual cassette recording. This is a logic-controlled deck
A carousel-style player (typically the CDP-C231 model) that allows for long-playing sessions. sony lbt-d507 user manual