The AT-LP120USB has three speeds, 33/45/78 RPM, meaning you can play all types of records, as well as a reverse function, allowing to play backwards and a selectable high-accuracy quartz-controlled pitch lock and pitch slider with +/- 10% or +/- 20% ranges. The AT-LP120USB-HC/AT-LP120USB-HCBK is compatible with the AT-MONO3/SP* cartridge allowing playback of 78 RPM mono records. *The AT-MONO3/SP is available to purchase separately and is not included with this turntable. You can connect directly to your Mac or PC with the included USB cable and digitalize your LP's using the included Audacity software, as well as to a stereo using standard RCA connectors. A selectable internal stereo phono pre-amplifier allows connection to components with no dedicated turntable input at line level.