The below details are from Google AI so please check for yourself, this has been used 5 days a week since the early 2000's in a home gym, I have a video i can send you of it in action, it has just been used on AUX to connect to my phone, this was through a Bluetooth box that plugs into the AUX part of the machine, it does not have Bluetooth, any other questions welcome,

5 cd changer and plays CD - working
Aux function - working
Tape deck - opens and closes but didn't play
Tuner - areal is lost so can't confirm
Remote - working, not corroded but missing battery cover

The selected device is the main unit of a Panasonic SC-AK410 (also known as model SA-AK410) mini stereo system. This shelf system is designed for high-power home audio and typically comes with matching speakers, such as the SB-AK410.Core FeaturesAudio Power: Delivers a total of 300 watts (RMS).5-CD Changer: Includes a multi-disc carousel that supports standard CDs and MP3 playback.Dual Cassette Deck: Features two tape wells for playback and recording (labeled Deck 1 and Deck 2).Digital Tuner: AM/FM radio with memory for up to 30 preset stations.Sound CustomizationSuper Sound EQ: A one-touch button to selectively boost low, medium, and high frequencies.Preset EQ Settings: Includes various sound field modes such as Heavy, Soft, Clear, Disco, Live, and Hall.Subwoofer Control: Dedicated controls to enhance bass levels.Physical Controls & ConnectivityDisplay: Features a bright, multi-color dot-matrix display that can show ID3 tags (artist and track names for MP3s).AUX Input: Includes an auxiliary port for connecting external devices.Convenience: Built-in sleep timer and clock settings.