A. Compatible for vehicles: 2017 A1 Urban Hatchback 2-Door 1.4L 1390CC 85Cu. In. l4 GAS DOHC Turbocharged; 2017 A7 Elite Hatchback 4-Door 2.0L 1984CC 121Cu. In. l4 GAS DOHC Turbocharged; 2017 A8 Premium Sedan 4-Door 3.0L 2995CC 183Cu. In. V6 GAS DOHC Supercharged; 2017 R8 Plus Coupe 2-Door 5.2L 5204CC V10 GAS DOHC Naturally Aspirated; 2017 Q3 Performance Sport Utility 4-Door 2.5L 2480CC 151Cu. In. l5 GAS DOHC Turbocharged; 2017 RS7 Performance Hatchback 4-Door 4.0L 3993CC 243Cu. In. V8 GAS DOHC Turbocharged; 2017 S7 Base Hatchback 4-Door 4.0L 3993CC 243Cu. In. V8 GAS DOHC Turbocharged; 2017 S8 Base Sedan 4-Door 4.0L 3993CC 243Cu. In. V8 GAS DOHC Turbocharged; 2016 A8 Premium Sedan 4-Door 3.0L 2995CC 183Cu. In. V6 GAS DOHC Supercharged; 2016 A8 L TDI Sedan 4-Door 3.0L 2967CC 181Cu. In. V6 crude oil DOHC Turbocharged; 2016 allroad Premium Wagon 4-Door 2.0L 1984CC 121Cu. In. l4 FLEX DOHC Turbocharged; 2016 Q3 Komfort Sport Utility 4-Door 2.0L 1984CC 121Cu. In. l4 GAS DOHC Turbocharged; 2016 Q3 Komfort Sport Utility 4-Door 2.0L 1984CC 121Cu. In. l4 GAS DOHC Turbocharged; 2016 Q5 Hybrid Prestige Sport Utility 4-Door 2.0L 1984CC 121Cu. In. l4 ELECTRIC/GAS DOHC Turbocharged; 2016 Elite Sport Utility 4-Door 3.0L 2967CC 181Cu. In. V6 crude oil DOHC Turbocharged; 2016 R8 Base Convertible 2-Door 4.2L 4163CC 254Cu. In. V8 GAS DOHC Naturally Aspirated; 2016 RS5 Base Coupe 2-Door 4.2L 4163CC 254Cu. In. V8 GAS DOHC Naturally Aspirated; 2016 RS7 Performance Hatchback 4-Door 4.0L 3993CC 243Cu. In. V8 GAS DOHC Turbocharged; 2016 S3 2.0T Sedan 4-Door -CC -Cu. In.; 2016 S3 2.0T Prestige Sedan 4-Door -CC -Cu. In.; 2016 S3 Base Hatchback 2-Door 2.0L 1984CC 121Cu. In. l4 GAS DOHC Turbocharged; 2016 S3 Base Sedan 4-Door 2.0L 1984CC 121Cu. In. l4 GAS DOHC Turbocharged; 2016 S3 Sedan 4-Door 2.0L 1984CC 121Cu. In. l4 GAS DOHC Turbocharged; 2016 S3 Prestige Sedan 4-Door 2.0L 1984CC 121Cu. In. l4 GAS DOHC Turbocharged; 2016 S3 Sedan 4-Door 2.0L 1984CC 121Cu. In. l4 GAS DOHC Turbocharged; 2016 S3 Technik Sedan 4-Door 2.0L 1984CC 121Cu. In. l4 GAS DOHC Turbocharged; 2016 S4 Sedan 4-Door 3.0L 2995CC V6 GAS DOHC Supercharged; 2016 S5 Coupe 2-Door 3.0L 2995CC V6 GAS DOHC Supercharged; 2017 for Attitude SE Sedan 4-Door 1.2L 1193CC 73Cu. In. l3 GAS DOHC Naturally Aspirated; 2017 for Durango Sport Utility 4-Door 5.7L 345Cu. In. V8 GAS OHV Naturally Aspirated; 2017 for Grand Caravan GT Mini Passenger Van 4-Door 3.6L 3604CC 220Cu. In. V6 GAS DOHC Naturally Aspirated; 2017 for Journey Utility 4-Door 2.4L 2360CC 144Cu. In. l4 GAS DOHC Naturally Aspirated; 2017 for Neon SE Sedan 4-Door 1.6L 1598CC 98Cu. In. l4 GAS SOHC Naturally Aspirated; 2017 for Viper Coupe 2-Door 8.4L 8448CC 515Cu. In. V10 GAS OHV Naturally Aspirated; 2017 - GT Base Coupe 2-Door 4.0L 3982CC V8 GAS DOHC Turbocharged. B. 4 gold plated RCA's (2 RCA input & 2 RCA output). C. Level: control knob. D. Frequency: 150Hz - 40Hz. E. Gain: 0db to -12db. F. Colour: Black. G. Material: plastic. H. Size: about 68x56x31mm. I. Package Contents: 1 * Car Audio Regulator, 4 * Screws. Only the above package content, other products are not included. J. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.