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Thread: Koss PRO-4 AA vintage headpones

  1. #11
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    Nor black plaky screw over jack bur well over sized all metal jack

    Last edited by Rare Bird; 12-02-2011 at 14:43. Reason: Picture

  2. #12
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    Quote Originally Posted by Alex_UK View Post
    Ahh man, they rock! Do you know what, I think we should all join Andre in about 1971 and tell the rest of history to f*** right off! Got my eye on a pair of 'phones that I can join the party (7) with - you just need to start growing the 70's porn star moustache - in time for Scalford - dare ya!
    You'll do for me bro

  3. #13
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    Quote Originally Posted by Marco View Post

    Technically, they probably won't be as good as my AKG 701s, but they'll add a touch of nostalgia, which is always fun!

    Dream on i hate my '701's in comparison!.remember companies only make the odd mega item
    Last edited by Rare Bird; 12-02-2011 at 01:20.

  4. #14
    Join Date: Jan 2008

    Location: Wrexham, North Wales, UK

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    Lol - read what I've written again, daftee, when yer sober!

    You've made a wee mistook... Clue: I was referring the 701s vs. the Koss

    Marco.
    Main System

    Turntable: Heavily-modified Technics SL-1210MK5G [Mike New bearing/ETP platter/Paul Hynes SR7 PSU & regulator mods]. Funk Firm APM Achromat with Nagaoka GL-601 Crystal Record Weight. Isonoe feet & boots. Ortofon RS-212D tonearm with Denon DL-103GL, in a Denon PCL-300 headshell, fitted with Funk Firm Houdini and Kondo SL-115 pure-silver cartridge leads.

    Paul Hynes MC head amp/SR5 PSU. Also modded Lentek head amp and 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. 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.

  5. #15
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    It was a brave brave feat for me to claim that these ROSS are in my view the best sounding headphones i've ever heard regardless of any price tag new or ancient! These are open back this DAC i use is like a match made in heaven



    The Asthetics in the flesh are something else..

    Sound description:

    The best best ever analogue sound you will ever hear, tight tight deep basss in total control what ever demanding music you throw at them, they never ever distort but give the buisness when on demand, may it be any harsh sound source you feed them, you will hear the toatal picture but without any harshness..one day i will go to bed & have a break.

  6. #16
    Join Date: Jan 2008

    Location: Wrexham, North Wales, UK

    Posts: 110,494
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    Did you mean Ross, not Koss?

    How much have you had?

    Marco.
    Main System

    Turntable: Heavily-modified Technics SL-1210MK5G [Mike New bearing/ETP platter/Paul Hynes SR7 PSU & regulator mods]. Funk Firm APM Achromat with Nagaoka GL-601 Crystal Record Weight. Isonoe feet & boots. Ortofon RS-212D tonearm with Denon DL-103GL, in a Denon PCL-300 headshell, fitted with Funk Firm Houdini and Kondo SL-115 pure-silver cartridge leads.

    Paul Hynes MC head amp/SR5 PSU. Also modded Lentek head amp and 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. 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.

  7. #17
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    amended certainly not TOSS

  8. #18
    Join Date: Jan 2008

    Location: Wrexham, North Wales, UK

    Posts: 110,494
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    Hehehe... Was it a vintage pair of the Koss PRO4AAs you had, or the new versions?

    Apparently the new ones are tweaked with better components

    Marco.
    Main System

    Turntable: Heavily-modified Technics SL-1210MK5G [Mike New bearing/ETP platter/Paul Hynes SR7 PSU & regulator mods]. Funk Firm APM Achromat with Nagaoka GL-601 Crystal Record Weight. Isonoe feet & boots. Ortofon RS-212D tonearm with Denon DL-103GL, in a Denon PCL-300 headshell, fitted with Funk Firm Houdini and Kondo SL-115 pure-silver cartridge leads.

    Paul Hynes MC head amp/SR5 PSU. Also modded Lentek head amp and 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. 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.

  9. #19
    Join Date: Dec 2008

    Location: Yorks

    Posts: 16,643
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    Quote Originally Posted by Marco View Post
    Hehehe... Was it a vintage pair of the Koss PRO4AAs you had, or the new versions?

    Apparently the new ones are tweaked with better components

    Marco.
    I bought those u ordered about 1984! i always found open backed more open sounding, see what you think anyway.. jesus the bass slam is amazing on these, i can see me asleep in this chair by morning

  10. #20
    Join Date: Jan 2008

    Location: Wrexham, North Wales, UK

    Posts: 110,494
    I'm AudioAl'sArbiterForPISHANTO.

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    Here's some interesting old ads for Koss headphones:











    Being tested for accuracy in the lab:





    Check this dude (or dude-ess) out (the threads in particular):







    The Koss headphones I used to have in the late 70s (bought them from Laskys):





    Apologies for the poor quality of the image - you can just about make out the slide volume controls on the side of them. Ah, memories... They sounded really good!

    {Edit} I've now found a much better image of them:





    Hopefully the PRO4 AAs will sound as good or even better!


    Marco.
    Main System

    Turntable: Heavily-modified Technics SL-1210MK5G [Mike New bearing/ETP platter/Paul Hynes SR7 PSU & regulator mods]. Funk Firm APM Achromat with Nagaoka GL-601 Crystal Record Weight. Isonoe feet & boots. Ortofon RS-212D tonearm with Denon DL-103GL, in a Denon PCL-300 headshell, fitted with Funk Firm Houdini and Kondo SL-115 pure-silver cartridge leads.

    Paul Hynes MC head amp/SR5 PSU. Also modded Lentek head amp and 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. 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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