Blame it on Noel Lee!
Some of us were experimenting with cables & connectors long before 1976.
Ieales needs a graphic equalizer- much easier for adjusting the tone of his system.
Ever viewed the phase response of a graphic? It’s horrendous.
For longer than I care to remember, I’ve said "It’s not the frequency response. It’s the Time!!" Asynchronous harmonic arrival causes a musically educated brain to work overtime trying to rearrange the harmonic structure. Good time and phase response is why the Quad electrostat still sounds amazing and something like the Tekton Moab and its ilk are initially impressive but ultimately extremely fatiguing.
Many systems can be vastly improved with the minimal EQ with a ’tilt’ of ±1 or 2 dB around a mid frequency. In the studio, we used to fake it with two band really low Q parametric EQ, especially when disc mastering. Today it’s a doddle to implement in the digital domain.
Completely baseless claim...
More than 50 years ago, pals and I began experimenting with listening to cables and electronics in our various systems. Initially we tried A/B testing, but found that what we had was C/D.
We all had separates. Some examples: Mitch Cottter, Apt, SAE, Ampzilla, Marantz, HK, db, Dayton-Wright, KEF, Celestion, Tannoy, AR, etc. No Bose, API or Japanese speakers.
We schlepped everything but turntables and speakers to one another’s homes. We mostly agreed that systems were better with the familiar than interlopers. About the same time we agreed that specs were so much twaddle.