The KOSS PRO-4A Professional Headphones from the 1970s are a rare vintage find for audio enthusiasts and collectors. Featuring a classic headband design and over-the-ear ear-cup style, these brown headphones are known for their high-quality sound performance. With the renowned Koss brand name and distinctive model, the PRO 4A headphones offer a unique retro feel with modern functionality, making them a sought-after piece in the vintage audio and electronics market. see pictures for the condition of it.
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