National Audio Company Inc. - Q: What's a Duplication Master

The Obscure J Dilla Beat Tape That Changed Music Forever

Lexus Interface, Intelligent Connectivity

Garfunkel: The Best Of: Garfunkel, Art: : Music

Duplication or National Audio Company? : r/cassetteculture

Analogue Media Tech (Amtech)

Audio engineer - Wikipedia

Slate (broadcasting) - Wikipedia

Audio Cassettes

Slate (broadcasting) - Wikipedia

Audio Cassette Duplication Packages - Real-Time and High-Speed

Cassette Manufacture - National Audio Company

OMNI-112: OmniStream Dual-channel Networked AV Encoder