New Replacement Plug-in ground Wire for Technics Black Turntable SL-BD10, BD20, BD22, BD35. - Walmart.com
If your turntable has a built-in preamp, it should be disabled when using the AVR's PHONO input.
How To: Ground a Rega Turntable - YouTube
Pro-Parts Turntable Ground Wire For Technics Part SJPB7M SL-DD22, SL-DD33, SL-J11, SL-J300, SL-J33, SL-L2, SL-L20, SL-L24, SL-L25, SL-L26, SL-QD22, and more in Saudi Arabia | Whizz Turntables
Amazon.com: 5-ft Technic Phonograph Turntable Ground Wire for Magnetic Cartridge Turntables : Musical Instruments
Amazon.com: Phonograph Turntable Ground Wire for Magnetic Cartridge Turntables, 5-ft Technic : Musical Instruments