So I've had a laserdisc player since 03 I had a pioneer s201 which doesn't have rf out for Dolby digital track . Well the other day at a thrift shop I found a nice lot they had around 30 discs at 50 cents each so I bought them all . So I went on eBay and bought a pioneer d504 with rf out so should I get an external rf decoder or buy an older receiver with an ac3 input the receiver I have is a denon 6.1 its a low end receiver so maybe a old pioneer elite might sound better, any thoughts on which way to go?