Also note if you are looking for a pair you must have the equalizer. Seen many for sale without one. Also the equalizes for the different series are not comparable across all the different series if 901s produced.over the years.
Bose 901 series 1 and 2 equalizers are comparable, series 3 and are comparable with each other, and series 5 and 6 are compatible. Do some research on this, it's very interesting. And as mentioned above a good powerful amp goes a long way to improve their sound.
Bose 901 series 1 and 2 equalizers are comparable, series 3 and are comparable with each other, and series 5 and 6 are compatible. Do some research on this, it's very interesting. And as mentioned above a good powerful amp goes a long way to improve their sound.