This page lists devices that are known to support faster than real time backups of MiniDiscs, either via USB to a PC or other means (USB A port, SD card)

Via Web MiniDisc Pro exploits

These (portable) devices support the reverse-engineered functionality in /netmd-exploits/ to export audio from MD via the Web MiniDisc Pro application. Type-S exploits are more developed, reliable, and faster than Type-R exploits.