In Memoriam: Ralph Stephenson (1946 - 2020)
KOSS PRO5Q Quadraphonic headphones 28.06.10
From the mid 1970s, these "cans" contained two earpeice capsules each side for use, in the short lived quad-hifi era of that decade, with 4 channel amplifiers.
This was an analogue foreunner of todays Dolby Surround and similar systems.
All quad equipment by now is quite rare and collectable.
A selector switch on these converts them to ordinary stereo use and they reproduce such audio very well.
Koss were a top of the range name in headphones although several of their products were akin to having one's head in a vise if worn for more than 20 minutes! These are somewhat more user friendly than that.
KOSS PRO5Q Quadraphonic headphones 28.06.10
From the mid 1970s, these "cans" contained two earpeice capsules each side for use, in the short lived quad-hifi era of that decade, with 4 channel amplifiers.
This was an analogue foreunner of todays Dolby Surround and similar systems.
All quad equipment by now is quite rare and collectable.
A selector switch on these converts them to ordinary stereo use and they reproduce such audio very well.
Koss were a top of the range name in headphones although several of their products were akin to having one's head in a vise if worn for more than 20 minutes! These are somewhat more user friendly than that.