Rega TT-PSU Motor Drive Power Supply Unit – $395 US Retail. While the TT-PSU has been around for several years, this new Rega TT-PSU is housed in Rega’s new style case has a new anti-vibration circuit, output circuit protection and improved power supply regulation. The Rega Turntable Power Supply Unit (TT-PSU), offers the convenience of electronic speed change and reduced motor noise and increased stability for all Rega 24v motor turntables. The Rega TT- PSU is an ideal upgrade path for the RP3 or the RP1 (when fitted with the 24v motor upgrade kit) and the older P3-24 & P5 Rega turntables. Click here for Rega TT-PSU Manufacturer Info Web Page.