SKU: 21593656487

Sennheiser Headset Cable X3K1, Copper Cable for Broadcast Boomsets, 2m,XLR-3 Connector, 6.3mm Jack Plug

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Description

Sennheiser Headset Cable X3K1, Copper Cable for Broadcast Boomsets, 2m,XLR-3 Connector, 6.3mm Jack PlugSennheiser HEADSET CABLE X3K1 (Cable II X3K1) Professional Broadcast Headset Cable The Sennheiser Headset Cable X3K1 (Article Number: 700427, Legacy: 505782 508546) is a premium, heavy duty replacement master connection cable engineered exclusively for Sennheiser's professional broadcast boomsets and monitoring headsets. Spanning exactly 2 meters (6. 6 feet) in length, this dual shielded copper cable acts as the primary hardware interface between an

Sennheiser HEADSET CABLE X3K1 (Cable II-X3K1) Professional Broadcast Headset Cable

The Sennheiser Headset Cable X3K1 (Article Number: 700427, Legacy: 505782 / 508546) is a premium, heavy-duty replacement master connection cable engineered exclusively for Sennheiser's professional broadcast boomsets and monitoring headsets. Spanning exactly 2 meters (6.6 feet) in length, this dual-shielded copper cable acts as the primary hardware interface between an announcer's headset and an electronic news gathering (ENG) field mixer, production truck terminal, or master control console.

The "X3K1" designation outlines its exact termination configuration: the shared single-sided headset connector runs down a straight line and splits cleanly at the tail end into a standard 3-pin XLR-Male connector for the microphone circuit, alongside a 6.3 mm (1/4") TRS jack plug for stereo headphone monitoring.

Key Structural and Engineering Attributes

  • Aramid-Fiber Reinforced Core: Braided internally with heavy-duty Aramid (Kevlar) reinforcement strands. This structural core significantly increases the cable's tensile strength, preventing inner copper lines from snapping or stretching when subjected to sudden tugs on a chaotic sideline or live stage set.

  • Integrated Anti-Microphonic Coiled Segment: Features a short, precision-engineered coiled element located immediately below the proprietary headset plug interface. This acts as a mechanical shock buffer, intercepting clothing friction, physical handling vibrations, and structure-borne noise before they can travel up the jacket and introduce low-end rumble to the audio feed.

  • Highly Flexible Soft Shielding Layout: Outer-jacket wrapped in a specialized, highly tactile polymer matrix. This design keeps the twin-parallel cable assembly completely flexible and resistant to tangling or looping, even when deployed under extreme temperatures in cold field-broadcast booths.

  • Gold-Plated Contact Interface pins: Both the 3-pin XLR-Male mic barrel and the 1/4" phone plug are treated with heavy gold electroplating. This maximizes signal conductivity, lowers contact resistance, and provides complete protection against atmospheric corrosion and oxidization over years of field abuse.

Technical Specifications Matrix

Feature Parameter Hardware Specification Profile
Model Reference Name Headset Cable X3K1 (CABLE II-X3K1)
Official Article Number 700427 (Current) / 508546 / 505782
Global Trade Product Code (UPC) 615104246300
Primary Cable Composition High-purity multi-strand copper with internal Aramid reinforcement
Total Physical Cable Length 2.0 Meters (6.6 Feet)
Headset-Side Connection Sennheiser Modular Multi-Pin Matrix Terminal (with locking screw mechanism)
Microphone Signal Termination 1 x 3-Pin XLR-Male Plug (Balanced line configuration)
Headphone Signal Termination 1 x 6.3 mm (1/4") TRS Stereo Jack Plug
Jacket Compound Build Non-reflective Matte Black Elastic Polymer
Net Structural Weight Approx. 106 grams (3.73 oz)

Master Headset Compatibility Profile

The X3K1 modular terminal architecture is engineered to attach flush onto the single-sided connection points of the following Sennheiser professional broadcast lines:

  • HMD/HME 26 Series: HMD 26-II-600, HMD 26-II-100, HME 26-II

  • HMD/HME 27 Series: HMD 27 PRO, HME 27 PRO

  • HMD 300 PRO Series: HMD 300 PRO, HMD 300 X3K1, HMD 301 PRO

  • (Note: Not compatible with legacy HD 25 series variants that use alternative pinned layout configurations).

In the Box: Component Inventory

  • 1 x Sennheiser Headset Cable X3K1 (2m Cable Terminated to XLR-3 / 1/4" Jack)

  • 1 x Replacement Miniature Mechanical Mounting Screw

Installation and Field Management Advice

Securing the Headset Anchor Screw: When mounting the X3K1 cable terminal into your compatible headset cup assembly (such as an HMD 26-II or HMD 300 PRO), align the multi-pin array carefully and push it firmly into the receiving slot. Once seated flush, use a small precision screwdriver to lock the included miniature anchor screw into place. Do not over-torque this screw to avoid cracking the plastic headset chassis—tighten it just until it sits hand-tight to keep the cable from tearing loose during intense field movement.

Dynamic Microphone vs. Active Phantom Power Safety: If you are running an HMD 300 PRO or an HMD 26-II headset utilizing this cable, keep in mind that these boomsets feature a high-performance dynamic microphone capsule ($40\text{ Hz}$ to $18,000\text{ Hz}$, hypercardioid/supercardioid). Dynamic elements do not require power. While standard professional audio consoles isolate the XLR lines safely, some older field-recording hubs or intercom boxes with faulty grounding loops can introduce audio artifacts or mild signal clipping if 48V phantom power is left active on that channel. For the cleanest, lowest-noise signal path, manually deactivate the 48V phantom power switch on your mixer's incoming headset microphone channel strip.

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SKU: 21593656487

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Stephanie K.
Chelsea, US
★★★★★ 5
Perfect puppy starter kit and gift! Perfect for plane rides and kennel!
Color: Neutral, Color: Neutral
Perfect puppy gift! We use the kennel as her safe haven, and for potty training . This heartbeat tool is amazing and helped our puppy get acclimated to her kennel. She goes into her kennel and sleeps with it on her own. It calmed her down on the plane completely. We had a 6-hour flight and she did fine with the heartbeat toy. At home innthe kennel, the whining was very very minimal the first couple days, then it stopped. As you would hear and see her snuggle up and fall asleep. I think it is a bit pricy, but not too bad for the benefit. The heartbeat is seperate and is putninside a pouch on the stuffed animal. The blanket is soft, beautiful and perfect size. Good quality fabric. Both chew toys were loved by her.I do notice my large breed puppy prefers the rope and small tennis ball type chew toys. However, she plays with these too. Haven't used the heating packs yet, they go inside the pouch with the heartbeat item. I am sure we will because my puppy does love to be in front of my small heater under my desk to keep my feet warm. The packaging was extremely nice and fancy and was complimentary to the items inside.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 10, 2021
N
Verified Purchase
norra.theexplorer
Battle Creek, US
★★★★★ 5
Best Idea for Puppy's First Day Home
Color: Pink
I was a bit reserved on purchasing this kit because it was a bit expensive. After a month now with my pup at home, this was the best investment for us and our GSD. On the first night, we used the heart beating snuggle puppy and blanket. She slept the entire night without an accident or a cry. The heartbeat in the snuggle puppy and the heat pad was the best idea. Our puppy never felt alone (just fyi, her crate was in the room with us for the 2 weeks). A month later, she is so protective of her snuggle puppy. We only used 1 heat pack to soothe her during the first week. The heat packs last a while. Our GSD now uses the snuggle puppy as a pillow or an object to be close to while she is in her crate. Any new puppy owner could definitely benefit from using this. Of course, with all things puppy, it does require a bit of time to correlate toys as a positive thing. We exclusively keep the snuggle puppy in her crate and make it a part of her secure place. My GSD puppy did really care for the teething heart toy. Even after freezing it, she didn't care for it. She also outgrew the small toy. She will chew it from time to time but it doesn't entertain her much. I found the kit, overall, very helpful with our puppy's adjustment to our home. She sleeps through the night since 8 weeks old and now at 12 weeks old. We've never had an accident in her crate overnight with the help with the snuggle puppy.
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Reviewed in the United States on April 5, 2020
D
Verified Purchase
3 Dog Mom
Massapequa, US
★★★★★ 5
Amazing kit for your puppy
Color: Blue
We’ve had 6 puppies over the years, and this is the first time we’ve had this wonderful little kit to welcome our little one home. We had the blanket with his litter so it smelled like them when he came home. He he loves that blanket, he loves the dog with the little heartbeat, and the teething toys. The 5 star review is because everything in this kit is so well made, really wonderful quality, and a great value. The blanket is a very nice thick plush, not some cheap one. The stuffed dog is big and fluffy and well made, the heartbeat works wonderfully, and the little chew toys safe and well made.i would encourage anyone who’s bringing home. A little one please get this first. It’s going to make your pup more comfortable when they get home, and will help then sleep better during the night and their naps. Very Well Done !
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Reviewed in the United States on June 20, 2021
S
Verified Purchase
S. Mangus
Houston, US
★★★★★ 5
A must have for a new puppy.
Color: Pink
I just got my first new puppy in many years, and I was searching for ideas of what items I should get to be ready for her. A dog forum I belong to gave suggestions for items to prepare for a new pup. One of the items listed was a snuggle puppy. I was not familiar with the product, and did some research. I had always heard that lonesome puppies respond well to a hot water bottle and ticking clock for comfort. A friend had suggested a stuffed animal. I found all of that in one package - The Snuggle Puppy! And even better was the complete new puppy package. The blanket is adorable, very soft and the perfect size. The toys are perfect, and they include extra warmers for the puppy. I keep my girl in a kennel at night with her blanket and puppy. The first night I tried just the blanket, and she cried and howled for 15 minutes. Then I turned the heart beat on and put the puppy in the crate with her. Within 5 minutes she was quiet and stayed that way all night. I have used it every night since and not a peep. (It's been a week now). I would highly recommend these products to anyone bringing a pup home - it was a sleep saver for sure and she seems to love it.
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Reviewed in the United States on February 3, 2022
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Verified Purchase
GSmith3rd
Port Orchard, US
★★★★★ 5
Great for a small puppy
Color: Pink
Got these for my puppy, a German shepherd, while it was functional, she loved it, as it was chewability, durability and ease of use.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 7, 2025

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