: Always check for "iTrader" feedback or recent activity. Reliable sellers on sites like DIYMobileAudio or CarAudio.com will have a history of positive transactions.
: Missing terminal screws or signs of leaking capacitors on older boards. car*classifieds
: Look for high-resolution photos. Specifically, watch for: : Always check for "iTrader" feedback or recent activity
: Use tools like Autopia to compare listings across multiple sites to ensure the price is fair. car*classifieds
: Many enthusiasts sell "limited edition" or discontinued equipment (like the Pioneer Premier PRS series ) that you simply can't find in retail stores.