SKU: 32106537152

Sennheiser SK 9000 A1-A4 Bodypack transmitter, digital, HD and LR mode, 3-pin SE socket, 470-558 MHz

Sale price$28943.25 Regular price$32159.17
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 11 - Jul 16

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Sennheiser SK 9000 A1-A4 Bodypack transmitter, digital, HD and LR mode, 3-pin SE socket, 470-558 MHzSennheiser SK 9000 A1 A4 Digital Wireless Bodypack Transmitter The Sennheiser SK 9000 A1 A4 (Article Number: 504730) is the cornerstone pocket transmitter of Sennheisers elite Digital 9000 wireless platform. Built into a highly durable magnesium alloy casing, this reference grade bodypack is designed for premier broadcast studios, international music tours, and complex theatrical productions that demand zero compromises in audio quality or RF

Sennheiser SK 9000 A1-A4 Digital Wireless Bodypack Transmitter

The Sennheiser SK 9000 A1-A4 (Article Number: 504730) is the cornerstone pocket transmitter of Sennheiser’s elite Digital 9000 wireless platform. Built into a highly durable magnesium-alloy casing, this reference-grade bodypack is designed for premier broadcast studios, international music tours, and complex theatrical productions that demand zero compromises in audio quality or RF dependability.

This model operates in the low UHF A1-A4 frequency band (470.000 MHz to 558.000 MHz). Featuring an expansive 88 MHz switching bandwidth, it uses highly advanced digital wireless engineering to perform with absolute linearity, making it immune to intermodulation dropouts on dense event sites.

Key Performance and Digital Transmission Attributes

  • Intermodulation-Free Linear Architecture: The SK 9000 operates completely linearly without generating destructive intermodulation artifacts. This allows sound engineers to organize a rock-solid equidistant frequency grid layout (spacing channels evenly at 600 kHz gaps) to dramatically maximize channel count without complex coordination math.

  • Dual Transmission Profiles (HD and LR):

    • High Definition (HD) Mode: Transmits uncompressed, completely natural digital audio data. It matches the sonic performance of a high-end studio cable, delivering pristine high-frequency detailing for elite vocalists and delicate instruments.

    • Long Range (LR) Mode: Employs Sennheiser’s proprietary high-robustness digital audio codec (SeDAC) paired with enhanced error correction. This mode stabilizes signal transmission over massive distances or through harsh physical obstacles on festival grounds.

  • Moisture-Insulated 3-Pin SE Socket: Outfitted with a premium, gold-plated 3-pin special connector (LEMO style) featuring physical internal gaskets. This design effectively shields the input nodes from stage sweat, heavy humidity, and rain, preventing audio shorts or structural crackle mid-event.

  • Military-Grade AES 256 Encryption: Integrated with hardware-driven AES 256 encryption protocols. Turning this feature on completely secures the digital RF stream, safeguarding sensitive corporate keynotes or secure governmental broadcasts from scanning or hijacking.

Technical Specifications Matrix

Feature Parameter Hardware Specification Profile
Model Reference Name SK 9000 A1-A4
Official Article Number 504730
RF Operational Band A1-A4 Block (470.000 MHz to 558.000 MHz)
Switching Tuning Bandwidth 88 MHz available across the low-UHF spectrum
Digital Transmission Modes High Definition (HD) Mode / Long Range (LR) Mode
Acoustic Frequency Response 30 Hz to 20,000 Hz (flat down to 3 dB)
System Dynamic Range HD Mode: 112 dBA / LR Mode: 104 dBA
Total Harmonic Distortion (THD) Less than 0.03% (measured at 1 kHz)
Audio Input Interface Node 3-pin Moisture-Resistant Locking Socket (Special SE LEMO Pin Out)
Input Impedance Profiles Microphone Input: 68 kOhms / Line Input: 1 MOhms
Audio Gain Adjustment Scale -6 dB to +42 dB (Instrument/Line adjustable in 3 dB steps)
RF Output Transmission Power HD Mode: 10 mW RMS / LR Mode: 25 mW RMS
Power Solution (Transmitter) Optional BA 61 Li-ion Accupack (6.5 hrs) or B 61 Dry Battery Case (3 x AA)
Chassis Build Material Lightweight, high-tensile Magnesium Alloy
Net Operational Weight Approx. 147 grams (including belt clip and battery pack assembly)

In the Box: Component Inventory

  • 1 x SK 9000 Digital Bodypack Transmitter (Black, A1-A4 Band)

  • 1 x Heavy-Duty Belt Clip

  • 1 x Removable Flexible Whip Antenna (Tuned for the A1-A4 range)

  • 1 x Quick Start Reference Manual

  • 1 x Safety Instructions Guide

  • (Note: Battery packs and microphone capsules are sold separately)

System Deployment and Hardware Interfacing Advice

Locking the 3-Pin LEMO Audio Interface: The SK 9000 uses a premium, moisture-resistant 3-pin connector. It pairs seamlessly with high-tier lavalier microphones (such as the MKE 1, MKE 2, MKE 40) and specialized headworn boom mics (like the SL Headmic 1 or HSP series). Ensure that you push the micro-connector into the socket until the outer collar locks with a distinct physical click. Always pull directly on the knurled metal collar to disconnect—never yank on the flexible microphone wire.

Battery Architecture Warning: To maintain low operational costs and stable weight balance, the SK 9000 does not bundle power elements out of the box. You must provision either a BA 61 rechargeable lithium-ion battery pack (delivering roughly 6.5 hours of continuous transmission tracking) or a B 61 dry battery case configured to host three standard AA batteries. Ensure that you monitor real-time battery telemetry via the backlit LCD screen or remotely inside your EM 9046 receiver channel layout.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
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]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 32106537152

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.8 ★★★★★
Based on 2451 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
S
Verified Purchase
surfah girl
Grantham, US
★★★★★ 5
indestructible!
these are so cute, squeak but my puppy who chews everything from rocks to shells was unable to tear these toys to shreds or even bite it into pieces. she actually gave up and grew bored with them which has never happened with any other toy or item she fixates on and eventually destroys.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026
H
Verified Purchase
Hannah O.
Omaha, US
★★★★★ 5
Great!
Surprisingly tough. Holds up to tug and doesn't rip right away like so many soft toys do. Has crinkle legs and squeaky head. Dog is having so much fun
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 29, 2026
S
Verified Purchase
stephanie
Belleville, US
★★★★★ 2
Junk
Able to chew up in about a day.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
B
Verified Purchase
Belinda
Bozeman, US
★★★★★ 5
Cute toy and well made
These are very cute and so far my dog has not destroyed them and he’s a very aggressive chewer. They are great quality. The colors are vibrant. Rocky loves the squeaker. They're light weight and the perfect size . He enjoys playing with them. We like to take them when he’s not looking and throw them to watch him go fetch them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 3, 2026
J
Verified Purchase
Jenn
Cuba, US
★★★★★ 5
Great toys
Dog loves these toys, toys have a squeaker in the head and the legs are crinkle like.Very durable toys for dogs that destroy toys.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026

recommand products