Sing Trix Voice Effects Processor Head Only For Karaoke System VOXX. EFFECT EQUIPMENT: VOXX ELECTRONICS MODEL SINGTRIX, SING TRIX VOICE EFFECTS PROCESSOR HEAD ONLY FOR KARAOKE SYSTEM VOXX ELECTRONICS. 85% – Good – Item in Good Working Order, but Has Some Visual Imperfections. Parts & Accessories – P&A. Several primary & non-primary P&A not included. […]