Yes. Sharp had a line of minidisc players back in the day with a 1.8 MHz ”1-bit” technology. https://global.sharp/products/1bit_system/tech_sub.html#:~:text=1%2

Yes. Sharp had a line of minidisc players back in the day with a 1.8 MHz ”1-bit” technology. https://global.sharp/products/1bit_system/tech_sub.html#:~:text=1%2Dbit%20samples%20sound%20at,so%20revolutionary%20in%20reproducing%20sound https://global.sharp/products/1bit_system/tech_sub.html#:~:t.... Aparently very high quality audio. https://www.reddit.com/r/minidisc/s/OTHQJwSt92 https://www.reddit.com/r/minidisc/s/OTHQJwSt92 They used ΔΣ as their logo.