No that's a HI to Lo converter. You use these when you don't have pre-outs available on the HU.
All Audi HU's already have pre-outs (front & rear), so all you need is an adapter to plug into the back of the HU with the correct plug on it, with RCA's on the other end. No additional electronics. Hi to Lo converters take the already amped signal going to the speakers back down to a pre-amplified signal with all the noise and interference that goes with it so you don't get a clean signal to feed the amp.
Also that converter is just a regular one, not an Audi one so you'll have to butcher the front speaker wiring to fit it.
Audi HU's only have a front speaker output, no rears, so you'll have no fader control either.
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