The Akai SE-L 50 is a vintage audio cassette deck manufactured by Akai in the 1970s. It features a two-head configuration, allowing for recording and playback, and supports standard cassette tapes. The deck has various playback and recording features, including Dolby noise reduction, manual bias adjustment, and a VU meter for monitoring levels. Additionally, it offers variable tape speed control and a headphone output. The Akai SE-L 50 is known for its durable build quality and reliable performance.