Was gifted a receiver(A-750)/tuner(T-550)/equalizer (GE-5)set but only plan to use the receiver. Was planning to either sell or give away the tuner and equalizer but curious if there value is really as a set so I should hang on to them. Also is the equalizer worth it?
Chiming in, yes absolutely keep it as a set, I’d even look for a matching tape deck (and turntable?) to complete it.
The EQ is very useful when you start connecting different, modern sources - media players, phones, tablets, etc. - many of them are tuned to drive headphones, and when used as a low-level input, are extremely bass or treble heavy. Just turning down the bass or treble on the amp can leave it sounding “empty” while being able to isolate one overdriven (or lacking) band on the EQ can help it sound more balanced.
You can look around on ebay for other great matching components as Yamaha most likely made matching turntables, tape decks and CD players for this system, but other newer components of other brands might have styling that can closely resemble the styling of this Yamaha.