SKU: 27477712590

KOSS PRO4S HEADPHONE

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Description

KOSS PRO4S HEADPHONEKOSS PRO4S HEADPHONE Professional Studio Headphones D CUP STUDIO MONITOR PROFESSIONAL GRADE HEADPHONE Koss SLX40 40mm OFC Neodymium 35 Ohm 10 25KHz 99dB drivers tuned for an incredibly accurate and unbiased sound, perfect for any studio or creative environment. Light in weight aluminium cup and headband for durability, robust build. D Profile memory foam 100mm closed ear pads, advanced sound isolation with all day comfort. Tuned for studio use monitor

KOSS PRO4S HEADPHONE

Professional Studio Headphones

D-CUP STUDIO MONITOR PROFESSIONAL GRADE HEADPHONE

Koss SLX40 40mm OFC Neodymium 35 Ohm 10-25KHz 99dB drivers tuned for an incredibly accurate and unbiased sound, perfect for any studio or creative environment. Light in weight aluminium cup and headband for durability, robust build. D-Profile memory foam 100mm closed ear pads, advanced sound isolation with all-day comfort. Tuned for studio use monitor reference standard. Flat folding with carry case. Detachable 1.3m coiled audio cable with 3.5mm plugs and L or R ear cup inputs.

The Pro4S Studio Headphone is specifically crafted for professionals who use headphones every day to create the world’s greatest music. Featuring the all-new SLX40 element, tuned for reference, the Pro4S Studio Headphone delivers an incredibly accurate and unbiased sound, perfect for any studio or creative environment. The Pro4S Studio Headphone features the natural fitting, iconic “D-profile” earcup that mimics the shape of the ear. Designed for the rigors and wear of professional use, the Pro4S Studio Headphone features an incredibly rugged mechanical design.
The aluminium earcups with memory foam cushions wrapped in soft protein leather make the headphone strong but incredibly comfortable. An all-new integrated, metal-on-metal assembly of the headphone makes the headphone extremely robust in areas where other headphones often fail. The Pro4S Studio Headphone features a detachable cord with dual-choice entry, allowing the user to choose which earcup to connect to for optimum adaptability. Once the cord is attached, the opposite side becomes an output, allowing pass-through listening or daisy chaining for extended monitoring. The Pro4S Studio Headphone folds flat into a travel case for easy portability.

  • Koss SLX40 40mm element OFC Neodymium
  • Aluminium construction heavy duty durability
  • D-Profile memory foam 100mm closed ear pads
  • Advanced sound isolation and all-day comfort
  • Tuned for studio use monitor reference standard
  • Lightweight and comfortable for extended use
  • Low profile form factor and flat folding
  • Protective carry case for storage & transporting
  • Detachable dual audio cable with 3.5mm plug
  • 35 Ohms Response 10-25,000Hz 99dB SPL
  • 1.3m coiled lead to 3.5mm / 6.35mm Stereo Plug
  • Dual entry L or R ear cable input (and output)
    • Shipping Notes
    • Free Standard Shipping on $100+ Orders to the USA.
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    Exchange/Return Notes
    • We offer a 30-day return/exchange service after receiving.
    • Final sale items are not eligible for returns or exchanges.
    • To process your return/exchange, please contact us at [email protected]
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    SKU: 27477712590

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    4.4 ★★★★★
    Based on 21 reviews
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    T
    Verified Purchase
    Tom
    Lake Worth, US
    ★★★★★ 5
    Great read for students
    Format: Paperback
    Studying cybersecurity, I thought "Black Hat Python, 2nd Edition" by Justin Seitz and Tim Arnold was quite helpful. This book makes difficult ideas far simpler by combining theory with practical examples. The revised material maintains it current given the cybersecurity issues of today. The practical uses it goes over, such as scraping and sniffing, which are essential skills for anyone working in the field. Whether you're brand-new or seasoned, the simple explanations make it easy to follow. Any student studying cybersecurity should not miss this book since it provides the ideal combination of knowledge and useful abilities through guided projects.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on June 4, 2024
    R
    Verified Purchase
    Rayner
    Birmingham, US
    ★★★★★ 5
    Python cybersecurity
    Format: Paperback
    Best book for entry level cybersecurity professional new to python.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on September 6, 2025
    C
    Verified Purchase
    Cliente Amazon
    New York, US
    ★★★★★ 4
    The book is simply perfect. Very good book. Problem with shipping.
    Format: Paperback
    The book is simply perfect. Good book and good practical contents, complex, but direct at the same time with what it has to say. Very useful if you want to learn Python but from the point of view of a Hacker or Pentester. There was a problem with the shipping, it was solved, but I received the book days later and for a few hours the book was lost, and the shipping agency couldn't track it, and they didn't know where it was. Luckily in the end it was fixed and I received it a few days later.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on August 23, 2024
    S
    Verified Purchase
    Seagull Stahpitnow
    Alexandria, US
    ★★★★★ 5
    Tough read for a newbie
    Format: Paperback
    To start off, I am not the world’s best at writing code. I do have a low level understanding of the concepts and can figure out (with a longer amount of time) how to get some of the code functional. With this in mind, this book (if your a beginner or struggle with Python) is going to be a tough read and hard to practice. Its pseudocode is solid and makes the coding easier but you need to beware of pythons syntax differences between the different versions when you are using this. (This is something I struggle with). I am beyond happy with this book, albeit there are typos and errors inside it but I think it’s solid for practice in this field. Coming from a nontechnical profession, having the concepts explained and taken out from theory into working practice helps understand the practical side of doing something like this. Despite being a tough read, i have the frame of mind that ethical hacking and program development is not for a total newbie and some experience is needed for maximum efficiency. Hope this helps!
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on June 23, 2024
    N
    Verified Purchase
    NewBUTbarelyused
    Carnegie, US
    ★★★★★ 5
    💯 just buy
    Format: Paperback
    Hey guys I'm a im an E-black belt now
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on March 22, 2026

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