![Obsolete Sony on Twitter: "Sony Super Metal Master was a high-quality cassette tape format introduced in 1993, which offered improved frequency response and signal-to-noise ratio. It was highly popular among audiophiles and Obsolete Sony on Twitter: "Sony Super Metal Master was a high-quality cassette tape format introduced in 1993, which offered improved frequency response and signal-to-noise ratio. It was highly popular among audiophiles and](https://pbs.twimg.com/media/Fv_ClVSXoAM4apr.jpg:large)
Obsolete Sony on Twitter: "Sony Super Metal Master was a high-quality cassette tape format introduced in 1993, which offered improved frequency response and signal-to-noise ratio. It was highly popular among audiophiles and
![Sony Metal Master Super Audio Metal Cassette Tapes for sale. NOS. Very limited quantity (less than 30) available on a "one-shot" buy-out. Still sealed in plastic. Pretty much the best audio cassette Sony Metal Master Super Audio Metal Cassette Tapes for sale. NOS. Very limited quantity (less than 30) available on a "one-shot" buy-out. Still sealed in plastic. Pretty much the best audio cassette](http://www.oaktreevintage.com/web_photos/Stereo_Necessories/Sony_Metal_Master_Super_Audio_Cassette_Tape_web2.jpg)
Sony Metal Master Super Audio Metal Cassette Tapes for sale. NOS. Very limited quantity (less than 30) available on a "one-shot" buy-out. Still sealed in plastic. Pretty much the best audio cassette
![Sony C-90 SMM Super Metal Master | Compact Cassettes | Tape Material | Recording Separates | Audio Devices | Spring Air Sony C-90 SMM Super Metal Master | Compact Cassettes | Tape Material | Recording Separates | Audio Devices | Spring Air](https://www.springair.de/media/image/8f/31/3b/h55169-1-55169a.jpg)
Sony C-90 SMM Super Metal Master | Compact Cassettes | Tape Material | Recording Separates | Audio Devices | Spring Air
1001HiFi - Ceramic Composite SONY Metal Master (1986) Read more: www.1001hifi.com Support us: www.patreon.com/1001hifi #sony #1001hifi #vintageaudio | Facebook
![Sony Metal Master MTL-MST90c with ceramic case | Compact Cassettes | Tape Material | Recording Separates | Audio Devices | Spring Air Sony Metal Master MTL-MST90c with ceramic case | Compact Cassettes | Tape Material | Recording Separates | Audio Devices | Spring Air](https://www.springair.de/media/image/58/5a/88/66598_600x600.jpg)
Sony Metal Master MTL-MST90c with ceramic case | Compact Cassettes | Tape Material | Recording Separates | Audio Devices | Spring Air
![Sony Metal Master Super Audio Metal Cassette Tapes for sale. NOS. Very limited quantity (less than 30) available on a "one-shot" buy-out. Still sealed in plastic. Pretty much the best audio cassette Sony Metal Master Super Audio Metal Cassette Tapes for sale. NOS. Very limited quantity (less than 30) available on a "one-shot" buy-out. Still sealed in plastic. Pretty much the best audio cassette](http://www.oaktreevintage.com/web_photos/Stereo_Necessories/Sony_Metal_Master_Super_Audio_Cassette_Tape_web1.jpg)