PIONEER CDRB20 Auxiliary Input Adaptors Auxiliary Input Adaptors: CD-RB20 Input Adapter RCA for IP-Bus Headunits with IP-Bus Throughput. PIONEER CDRB20 Auxiliary Input Adaptors Availability: Product Will Ship With-In 24 Hours If In Stock PIONEER CDRB20 246Regular price: $47.25Sale price: $47.25 sales@avcarexpo.com