National Audio Company Inc. - Q: What's a Duplication Master? National Audio duplicates cassette tapes on high-speed, studio-quality, open-reel tape recorders known as duplicating slaves. This produces cassettes with a higher output
Recordex USA Soundmaster IV - 1-4 Cassette Duplicator 600 B&H
Audio Cassette Duplication Packages - Real-Time and High-Speed Digital Bin Tape Copies
What Can I Help You With: Making Cassette Tapes with Cryptic Carousel | Bandcamp Daily