It is an exceptional sounding unit that holds up to today's standards in my opinion. It had a companion box called the pdsd to gain Dolby digital capability. The PAV needs to be running a specific firmware to talk to the pdsd, so you really should not rely on finding a pdsd down the road.
I have seen dozens of these trade for under $500, so unless the one you are considering is museum condition with original everything I would pass.
I have seen dozens of these trade for under $500, so unless the one you are considering is museum condition with original everything I would pass.