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Koss-PRO-4AA (1975)

Tuned's picture

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Koss-PRO-4AA (1975)




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Tuned's picture

Re: Koss-PRO-4AA (1975)

These headphones are very strong, which gives them a huge flaw: they are too heavy and quickly become very uncomfortable! When you tilt your head forward they fall ...
Also the sound is not heard of the best ...

Re: Koss-PRO-4AA (1975)

These were a very good value for the money back in the day. I think I paid between $60 and 70 in 1975. Truly spectacular sounding headphones, AKG, Sennheiser, Beyerdynamic etc. were easily double the money. These were highly favorable to the rock-n-roll sound and could play at extremely high levels with rock solid bass. No doubt the die-cast frames helped in this regard but also added to considerable weight. I have bought several upgrades in the decades since buying these, but I still keep them around the work shop were I repair vintage hifi. I know exactly what music should like through them, which makes them a known standard in which to determine the health of the system under test.

Ellies Fashions's picture

Re: Koss-PRO-4AA (1975)

Recently we got back into Quadraphonic and wound up with a vintage pair of very similar Koss Quadraphonic Headphones (they are the Quadraphone Pro 5Q's).

We had several pairs of high end modern headphones over the years and were astounded to hear great music the likes of which we never heard before from these Koss Headphones. So, In addition to buying the hard to find Koss Quads we also bought a vintage set of these Stereo Koss Pro-4AA's.

For our two cents, the vintage headphones make modern headphones of any price sound like garbage.

I will agree both these and the even heavier Quadraphonic Headphones are heavy but the sound is worth it. In both cases these are studio quality headphones which might be the reason.

I should note if you get these headphones and the gas filled ear pads have deflated - you can order replacement ear pads from Koss Parts for something like $5.50 including shipping as of 2018. The pads for the Pro-4AA also fit our quad headset and so were replaced. Our quad headphones are 40+ years old and sound amazing on a true quadraphonic receiver.

Ellies Fashions's picture

Re: Koss-PRO-4AA (1975)

Recently we got back into Quadraphonic and wound up with a vintage pair of very similar Koss Quadraphonic Headphones (they are the Quadraphone Pro 5Q's).

We had several pairs of high end modern headphones over the years and were astounded to hear great music the likes of which we never heard before from these Koss Headphones. So, In addition to buying the hard to find Koss Quads we also bought a vintage set of these Stereo Koss Pro-4AA's.

For our two cents, the vintage headphones make modern headphones of any price sound like garbage.

I will agree both these and the even heavier Quadraphonic Headphones are heavy but the sound is worth it. In both cases these are studio quality headphones which might be the reason.

I should note if you get these headphones and the gas filled ear pads have deflated - you can order replacement ear pads from Koss Parts for something like $5.50 including shipping as of 2018. The pads for the Pro-4AA also fit our quad headset and so were replaced. Our quad headphones are 40+ years old and sound amazing on a true quadraphonic receiver.