Pro-Ject Speed Box S


Out of stock

These turntables with 16 volt AC motor are compatible with Speed Box S:

  • 33/45 (78 with optional pulley): Pro-Ject Debut III, Debut Carbon (only US version with 16 volt motor), 1-Anniversary, Art-1, 1-Xpression III & Classic, RPM-5.1
  • 33/45 (no 78 available, because pulley can not be exchanged): Essential, 2-Xperience Acryl & Classic, 6-perspeX, RPM-1.3, RPM-9.1X, RPM-9.2, RPM-10.1

Caution! Do not use Speed Box S with following turntables:

  • Debut III E, Debut II Phono USB, Debut Carbon (all non-US versions), Essential Phono USB, Juke Box (all types), 1-Xpression III Comfort, X-tension (all types)


Out of stock

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!

Key Features

  • 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)
Weight 560 g
Dimensions 104 × 103 × 36 mm


Black, Silver

Input 18 V/ 500 mA DC; 220 – 240 V, 50 Hz
Output 16 V AC 190 mSA (up to 3 W max)
Speed Stability +/- 0,001%
Power Supply 18 V/500 mA DC


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