With the wrong interconnects in a bad place you can pick up a radio station even without a wide bandwidth amp! :)
So the theory is that a very wide amplifier is very fast, and can go very low, perhaps to 0Hz and 100kHz. The problems are that 0 Hz is a DC signal which can blow your speakers, and 100 kHz could fry your tweets if amplified and you'll never hear either.
So, sure, wide bandwidth amps are extremely capable in the audible zone, but does that alone make it better? Meh.
So the theory is that a very wide amplifier is very fast, and can go very low, perhaps to 0Hz and 100kHz. The problems are that 0 Hz is a DC signal which can blow your speakers, and 100 kHz could fry your tweets if amplified and you'll never hear either.
So, sure, wide bandwidth amps are extremely capable in the audible zone, but does that alone make it better? Meh.