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Martin Theophilus of The Museum of Magnetic Sound Recording, Part One – PS Audio

DD Audio Sub-Woofer Repairs! – Hi Fi HQ Blog: News, Reviews & Tech Talk

Pioneer RT-1020L Reel To Reel Recorder

Audiogon Discussion Forum

What are the advantages and disadvantages of analog vs. digital audio recording in film production? What are some examples of each? - Quora

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Pioneer RT-707 Auto Reverse Reel to Reel Tape Deck Demonstration Video.