Rega RB Titanium Reference TonearmRB Titanium Reference The RB Titanium tonearm is the most advanced and accurate production tonearm Rega have ever manufactured. The entire tonearm structure is designed to have the minimum of mechanical joints whilst using the stiffest materials in all critical areas. The RB Titanium was originally designed to complement Rega's highest performing turntable the Naia, it is now available for the first time to purchase separately as a retail model.