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Old 18th November 2010, 11:05 AM   #1
diyAudio Member
Join Date: Apr 2010
Smile koss 4AA Headphone`s

Hello All.
I have a chance to buy a pair of koss pro/4AA phone`s.They have been in a cupboard since 1973 as the chap did not like them,i would
like some info on them please,what are they worth? the sound ,weight Etc.they are in very good condition the cup`s are not leakingthat`s agood sign the chap`s open to offer`s.I would be grateful of any advice at all thank`s.
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Old 23rd November 2010, 08:30 PM   #2
diyAudio Member
Join Date: Mar 2005
Location: Midwestern US
The Koss Pro-4AA headphones were well-regarded back in their day. The Pro-4AA's had a fairly-extended bass-frequency response (augmented by the closed-earcup design) and reasonably flat frequency response up through the upper-midrange. The high-frequency region was pretty weak, however.
Mullard EL34
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Old 29th November 2010, 07:28 PM   #3
diyAudio Member
Join Date: Apr 2010
Mullard EL34.
Hi there,thank`s for the info on the koss headphones at twenty GBP i have nothing to lose .
cheer`s ron.
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