Help with amplifier needed

[Peter Podi]

I have purchased 2008 Audi a6 c6 avant with no sound at all.  MMI works, navi works, radio list frequencies however I cannot here anything.  I have opened the left compartment at the back and the amplifier is missing, the optical loop is bypassed with a connector. 

Where can I find a correct amp part number for my car?

[Steve Q]

You'll need to go into Audi or type your reg on a parts store online to find the correct part number. As it'll depend if it's Bose, or standard Audi one etc. 

If you've just bought it from a dealer in the last 30 days then it's their responsibility to fix it free of charge as you're entitled to a full refund in the first 30 days after sale