The Pro-Ject replacement 240V AC to 15v DC power supply is for newer DC turntables (post Nov 2015)
The 240V AC to 16VAC power supply is for Pro-jet Turntables that require an AC adapter (older turntables)
The 240V AC to 18V AC power supply for Pro-Ject Box Design Products. This includes the Bluetooth Box, Phono Box, Phono Box SE, Tube Box.
Please check voltage requirements before ordering, and if you are unsure, give us a call