Koss Porta Pro repair help : r/headphones

DIY Headphones for the Oculus Rift S - Hardware & Tech Questions - Mudspike Forums

I think I got one too many. : r/headphones

Why are the Koss Porta Pro headphones so quiet when plugged on iPhones? - Quora

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The Pro4S Studio Headphone is specifically crafted for professionals who use headphones every day to create great music. Featuring the SLX40 element, tuned for reference, the Pro4S Studio Headphone delivers an incredibly accurate and unbiased sound, perfect for any studio or creative environment.

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