• Quartz-generated high precision electronic speed regulation with microprocessor control  

• Sound improvement through motor running smoothness  

• Clean power decoupled from mains interference  

• Allows electronic speed change 33 & 45 rpm  

• 78 rpm possible with optional accessory pulley  

• Suitable for all turntables with 16 volt AC motor, up to 3 watt max. power consumption  

• Metal case shields electronics from vibration and electromagnetic interference  

• Small size allows installation close to record player  

• DC power supply (< 1 watt standby power)  

• Available in silver or black finish  

Upgrade to best possible turntable performance with convenient speed changeover through keypress!  

A very useful accessory for many Pro-Ject turntables, that do not offer a built-in electronic speed change. The Speed Box S performs this change by the push of a button between 33 and 45 rpm! The quartz regulation and filter circuit gives a far better speed stability for smooth and undisturbed motor operation. Speed Box S is compatible with a lot of Pro-Ject turntables (see list above) and some also offer the possibility to play 78 rpm records with the addition of a special accessory pulley!