Darren, a Crutchfield employee and car audio integration guru, walks JR through the "head unit back" audio upgrade he installed in his '17 Volkswagen Golf Alltrack. Check out these articles to follow along with Darren's installation (https://www.crutchfield.com/r/5V7) and his custom fiberglass work (https://www.crutchfield.com/r/5V8).

Some of the gear discussed includes:

Hertz Mille ML Power 5-channel amplifier

https://www.crutchfield.com/r/5V9

Rockford Fosgate DSR-1 digital sound processor

https://www.crutchfield.com/r/5VA

Hertz MP 250 D4.3 10” subwoofer

https://www.crutchfield.com/r/5VB

Hertz Mille Pro component speaker system

https://www.crutchfield.com/r/5VC

Hertz Mille Pro coaxial speakers

https://www.crutchfield.com/r/5VD

Dynamat sound deadening

https://www.crutchfield.com/r/5VF

Stinger Roadkill FAST Rings

https://www.crutchfield.com/r/5VG

After the interview, JR and Eric answer a question from the customer comments on our What Are Line Output Converters? (https://www.crutchfield.com/r/5VE) article about where to tap into audio signal when keeping a factory radio in an audio upgrade.