Hoppe's Brain

One pair of beige Koss Pro/4AA Resto-modded DJ Headphones up for sale in my store!

Resto-modded Koss Pro4/AA DJ Headphones

* Not affiliated with ADCOM corporation, past or present.

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BFA-555 MK2 Input board for ADCOM GFA-555 MK2 Price range: $80.00 through $440.00
Matched pair input transistors, 2 pairs KSC1845 $20.00
BFA-555 MK1 Input Board for Adcom GFA-555 MK1 Price range: $80.00 through $440.00
EBFA-565 Replacement Circuit Board for Adcom GFA-565 Price range: $80.00 through $480.00
BFA-555 Smart Soft-Start Power Supply for the Adcom GFA-555 Price range: $220.00 through $340.00
BFA-535 Power Supply for Adcom GFA-535 MK1 $140.00
TO-3 to TO-3P / TO-247 Transistor Heat-Spreaders / Adapters Price range: $20.00 through $310.00
BFA-565 Power Supply for Adcom GFA-565 $160.00

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One pair of beige Koss Pro/4AA Resto-modded DJ Headphones up for sale in my store!
Resto-modded Koss DJ Headphones now in BLACK!
The Koss DJ Headphones, now with a locking headband! (Article has been extensively updated.)
Koss Pro4/AA Headphones resto-modded into great DJ Headphones!

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