There's a big difference but unless you're dropping 5k on Stax its kind of a moot point. You can pick up the SR-507's and you don't need a $5000 amp. The clarity in those is amazing. You obviously want something open ear and that breathes new life into your collection. I'm a live sound...
The A4 didnt get a complete redesign. The front fascia got a different grill, headlights and bumper. Thats the most noticeable thing. Its still the same B8 chassis as before so you wont see a price drop. As a former Audi owner dont waste your time on a front wheel drive audi. Its Quattro or...