The Project Speed Box SE is an electronic speed controller suitable for both mains powered and externally powered 16 volt turntables, such as the Pro-Ject turntable range. Extreme precision engineering makes this Speed Box a very stable and accurate controller. The Speed Box SE features electronic speed settings for 33 and 45 rpm and a 20 step pitch control to increase or decrease the playback speed by 0.1 rpm. Even 78 rpm is possible with the use of an accessory pulley (sold separately). The large front panel display shows the exact speed of the turntable, allowing pin-point fine tuning. The Speed Box SE's robust all metal casework is designed to eliminate vibration and electromagnetic interference and high precision quartz generated electronic speed regulation ensures the ultimate listening pleasure. Top-notch build and precision electronics make the Project Speed Box SE an extremely high quality turntable speed controller. Compatibility Mains powered and 16 volt AC (with external power supply) turntables, such as those made by Pro-Ject Connections 16 volt, 3 watt AC power out (for connection to turntables with an external power supply) 230 volt, 3 watt AC power out (for use with mains powered turntables) Extra Quartz generated electronic speed regulation, digital display, voltage regulation function. Finish Black fascia and casework Functions Electronically controls the speed of both mains powered or 16 volt AC turntables Electronic speed change between 33 & 45 rpm Pitch control allows adjustment of play speed in 20 steps of 0.1 rpm 78 rpm control also possible using additional alternative pulley (not supplied) W x H x D (mm) 103 x 72 x 145 Weight (kg) 1.4 Thank you.