Senior Member
Location: West Ealing, West London
Posts: 1,158
I'm Mauro.
Vintage Original Koss Pro-4AA Closed Ear Headphones
Vintage original Koss Pro-4AA Closed Ear Headphones.
Standard stereo 6.35 mm jack plug.
Good conditions for the age, some wear and tear.
100% working, just checked in HiFi shop.
I'm looking for £70 shipped with Hermes tracked.
If you have any questions, please ask.
Kind regards.
Mauro
why is nothing ever simple?
Senior Member
Location: London/Durham
Posts: 6,878
I'm Lawrence.
How do they sound compared to modern closed back headphones?
Senior Member
Location: West Ealing, West London
Posts: 1,158
I'm Mauro.
They have a very vintage sound....Originally Posted by Lawrence001
why is nothing ever simple?
Fount Master & Moderator
Location: Essex
Posts: 31,986
I'm openingabottleofwine.
I'll take them please Mauro. PM on its way.
Barry
Senior Member
Location: Woodmancote, West Sussex
Posts: 1,629
I'm Ian.
I have a pair of these that I still use, Mauro is spot on, they have a full, vintage sound, lots of detail and lovely, solid bass. Great for a classic rock session. GLWS
Turntable
Toshiba SR-370/Mission 774/Van Damme cable with MS Starline plugs/Ortofon Quintet Black
CD
Cambridge CXC transport/modified Musical Fidelity X-DAC/modified Musical Fidelity X-10 V3 tube buffer
Network Player
Cambridge NP30
Amplifier
Denon HA-500 head amp/Nakamichi CA-5E pre-amp/Chinese passive RVC/Proton AA-1150 DMC power amp
Speakers
Mordaunt Short Signifer on original factory stands
Cables
Mogami with Rean Neutrik plugs/NVA LS5
Headphones
Sennheiser HD600/Sennheiser HD650/Koss Pro4 AA
Senior Member
Location: West Ealing, West London
Posts: 1,158
I'm Mauro.
SOLD
many thanks to Barry.
why is nothing ever simple?
Site Owner/Administrator
Location: Wrexham, North Wales, UK
Posts: 110,012
I'm AudioAl'sArbiterForPISHANTO.
Nice one, Barry - you'll love 'em! I always enjoy listening to mine, as they highlight precisely what's wrong with the sound of most modern headphones, much the same as most modern loudspeakers...
They're HEAVY buggers though, so you may only be able to wear them for a while, before needing to give your head a rest, particularly as they tend to clamp the sides of your head (and ears) rather tightly, which can subsequently make them rather sweaty to wear in warm weather.
That aside, I've compared them with designs up to £350 and the old timers held their own against all of them. They also isolate outside noise better than any other headphones I've tried. You'll be unable to hear anyone speaking to you with them on, and I mean when there's no music, and they're reasonably efficient too, so match well with most headphone amps.
Enjoy!
Marco.
Main System
Turntable: Heavily-modified Technics SL-1210MK5G [Mike New bearing/ETP platter/Paul Hynes SR7 PSU & reg mods]. Funk Firm APM Achromat/Nagaoka GL-601 Crystal Record Weight/Isonoe feet & boots/Ortofon RS-212D/Denon DL-103GL in Denon PCL-300 headshell with Funk Firm Houdini/Kondo SL-115 pure-silver cartridge leads.
Paul Hynes MC head amp/SR5 PSU. Also modded Lentek head amp/Denon AU-310 SUT.
Other Cartridges: Nippon Columbia (NOS 1987) Denon DL-103. USA-made Shure SC35C with NOS stylus. Goldring G820 with NOS stylus. Shure M55E with NOS stylus.
CD Player: Audiocom-modified Sony X-777ES/DAS-R1 DAC.
Tape Deck: Tandberg TCD 310, fully restored and recalibrated as new, by RDE, plus upgraded with heads from the TCD-420a. Also with matching TM4 Norway microphones.
Preamps: Heavily-modified Croft Charisma-X. LDR Stereo Coffee. Power Amps: Tube Distinctions Copper Amp fitted with Tungsol KT-150s. Quad 306.
Cables & Sundries: Mark Grant HDX1 interconnects and digital coaxial cable, plus Mark Grant 6mm UP-LCOFC Van Damme speaker cable. MCRU 'Ultimate' mains leads. Lehmann clone headphone amp with vintage Koss PRO-4AAA headphones.
Tube Distinctions digital noise filter. VPI HW16.5 record cleaning machine.
Speakers: Tannoy 15MGs in Lockwood cabinets with modified crossovers. 1967 Celestion Ditton 15.
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Fount Master & Moderator
Location: Essex
Posts: 31,986
I'm openingabottleofwine.
Hi Marco,Nice one, Barry - you'll love 'em! I always enjoy listening to mine, as they highlight precisely what's wrong with the sound of most modern headphones, much the same as most modern loudspeakers...
They're HEAVY buggers though, so you may only be able to wear them for a while, before needing to give your head a rest, particularly as they tend to clamp the sides of your head (and ears) rather tightly, which can subsequently make them rather sweaty to wear in warm weather.
That aside, I've compared them with designs up to £350 and the old timers held their own against all of them. They also isolate outside noise better than any other headphones I've tried. You'll be unable to hear anyone speaking to you with them on, and I mean when there's no music, and they're reasonably efficient too, so match well with most headphone amps.
Enjoy!
Marco.
I've been after a pair of the original Koss Pro4AA for a while now. I used to use a pair of them in the late '60s, and whilst I don't actually like listening on headphones (I don't like the 'in the head' experience, or the fact that when you move your head, the image moves with it), there are times when they can be useful when one needs to listen deeply into the music. After a period of using various inexpensive Sennheiser and Sony models, I thought I would return to some vintage Koss headphones.
Yes I know they are hot, heavy and sweaty in use (I have a pair of the self-energising Koss electrostatic ESP6s, which have identical headband, fluid-filled ear cushions and the thick coiled lead, and I do find them uncomfortable to use for long periods of time), but since moving to the use of monoblock power amplifiers, located directly behind each speaker, I cannot use the ESP6s anymore.
So despite what I've written, I'm actually looking forward to using the Pro4AAs again.
Barry
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