It is a classic open tape recorder. It has two half-track heads: an erase head and a recording/playback head, supporting two tape speeds. This design provides clear sound quality during recording and playback. Its operation is simple. Recording or playing can be performed by placing a full roll of magnetic tape on the left and an empty roll of magnetic tape on the right, and then passing the magnetic tape through the recording/playing head and fixing it on the empty roll. Although it seems a bit retro today when digital audio equipment is popular, it is still loved by some audio enthusiasts because of its unique analog sound quality and nostalgic charm.

It is a device for playing and recording stereo tapes, widely used from the 1970 s to the 1990 s. It usually has two heads, one for playback and one for recording, and can handle stereo signals, providing a separate sound quality experience for left and right channels. It is designed to play music through built-in or external speakers, and can also record by connecting a microphone or instrument. Many models are also equipped with an automatic reverse function, which can automatically switch to the other side after the tape is played, making it convenient for users to listen to songs or record continuously. Many enthusiasts still treasure and use this device to relive the charm of classic music.

The Sony TC-510-2 is a portable roll to roll stereo recorder from the late 1970s. This recorder is designed for use with a 12V battery pack or AC-26 adapter and can record left and right channels. For professionals or semi professionals who require high-quality portable stereo speakers, a tape recorder is a viable option.