I had something similar when I was in my teens. As far as I know, my hearing was normal then. When I heard pots and pans rattling, it set off a cacophony in my ear. Like you, I compared it to a bad stereo speaker (only then, most speakers were hi-fi). When I whistled, something inside my ear vibrated in an interval of a perfect third. I had been swimming and diving for endless hours daily for months before it started, and my theory was that I'd forced some water or junk into the middle ear through the eustacian tube. Is that possible/likely? I've never come up with a better theory. It went away after several months.
Now I have some distortion in my left ear if I'm listening to music through ear buds (without my hearing aids). But this distortion is just a muffling or slight garbling of the sounds -- not like a bad stereo speaker, and not disturbing.
Freq: Right Left
250 40 60
500 50 65
1000 50 60
2000 45 45
4000 65 70
Right: SRT=50 dB, WRS 92% at 70 dB
Left: SRT=60 dB, WRS 80% at 80 dB
Had stapedotomy on left ear in May, 2015. Prior to that had a severe/profound loss across all frequencies in my left ear.