This is the iDatalink Maestro HRN-HRR-AU1 Audi Plug & Play T-Harness.

Installation harness designed for use with Maestro RR or RR2 modules compatible with select Audi vehicles 2002-2015. Works with both non amplified and amplified systems (retains OEM amplifier) Optional head unit adapters available for most major brands radios for a simplified installation.