SHOP › RMK FOR SYNTHESIS ELECTRONIC COMPONENTS Image 1 of 1 RMK FOR SYNTHESIS ELECTRONIC COMPONENTS $485.00 JBL Synthesis Rack Mount Kit for SDP, SDR & SDA electronic components (except SDA-1700). Quantity: Add To Cart Added! JBL Synthesis Rack Mount Kit for SDP, SDR & SDA electronic components (except SDA-1700).