Brian May uses a set-up that could be deemed as absurd in pure technical terms.
His Red Special originally incorporated a Vox Treble Booster.
Actually, due to its quite low input impedance, combined with the pick-ups inductance the TB starts with a serious band-pass filter that attenuates both treble and bass, and leaves only the midrangey sound.
When BM found out he got a better sound without the TB and just the natural distortion from the AC30's, he noticed that long cables actually moved the bandpss a few notches down, to a sound he liked more.
Such a set-up cannot be qualified in the usual terms of fidelity, like frequency response or distortion.
His Red Special originally incorporated a Vox Treble Booster.
Actually, due to its quite low input impedance, combined with the pick-ups inductance the TB starts with a serious band-pass filter that attenuates both treble and bass, and leaves only the midrangey sound.
When BM found out he got a better sound without the TB and just the natural distortion from the AC30's, he noticed that long cables actually moved the bandpss a few notches down, to a sound he liked more.
Such a set-up cannot be qualified in the usual terms of fidelity, like frequency response or distortion.