SKU: 33142986821

Sennheiser SKM 9000 BK A1-A4

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Description

Sennheiser SKM 9000 BK A1-A4Sennheiser SKM 9000 BK A1 A4 Digital Handheld Wireless Transmitter (Black) The Sennheiser SKM 9000 BK A1 A4 (Article Number: 504714 Command Variant: 504710) is a flagship, elite tier digital handheld wireless microphone transmitter from Sennheisers reference Digital 9000 platform. Built without compromise for international music tours, high profile broadcast television networks, and premium live performances, this modular "body only" transmitter

Sennheiser SKM 9000 BK A1-A4 Digital Handheld Wireless Transmitter (Black)

The Sennheiser SKM 9000 BK A1-A4 (Article Number: 504714 / Command Variant: 504710) is a flagship, elite-tier digital handheld wireless microphone transmitter from Sennheiser’s reference Digital 9000 platform. Built without compromise for international music tours, high-profile broadcast television networks, and premium live performances, this modular "body-only" transmitter achieves completely uncompressed, artifact-free wireless audio transmission that mirrors a studio cable connection.

The "BK" designation highlights its professional, sleek Matte Black finish. This specific variant operates within the low-UHF A1-A4 frequency band (470.000 MHz to 558.000 MHz) with an agile 88 MHz tuning bandwidth.

Key Acoustic and Digital RF Attributes

  • Uncompressed HD Digital Transmission: Unlike traditional wireless systems that employ standard analog compandors to crush dynamics, High Definition (HD) Mode bypasses all companding algorithms to transmit completely raw, 24-bit digital audio. This preserves absolute dynamic transparency and linear high-frequency tracking.

  • Linear Intermodulation-Free Equidistant Grid: The SKM 9000 handles internal RF amplification linearly, generating zero intermodulation distortion. This allows multi-channel setups to be laid out on an equidistant frequency grid (spaced at uniform 600 kHz intervals). Operators can drop channels right next to each other in crowded spectrum windows without complex math or ghost frequencies.

  • Broad Modular Capsule Compatibility: Features a premium, universal microphone head interface node. It is fully compatible with specialized Digital 9000 dynamic/condenser capsules (such as the MD 9235, ME 9002, or ME 9004), legacy evolution wireless (G3/G4) and 2000 series heads, and high-end studio options like the Neumann KK 204 and KK 205 condenser heads.

  • Integrated Infrared Setup Link: Outfitted with an integrated IR window inside the lower chassis ring. It can execute immediate automatic configuration, gain calibration, and master frequency sync with the EM 9046 multi-channel receiver in seconds.

Technical Specifications Matrix

Feature Parameter Hardware Specification Profile
Model Reference Name SKM 9000 BK A1-A4
Official Article Number 504714 (Standard Version) / 504710 (COM Version with Command Switch)
RF Operational Band A1-A4 Block (470.000 MHz to 558.000 MHz)
Switching Tuning Bandwidth 88 MHz available (Tunable in ultra-fine 25 kHz increments)
Digital Transmission Modes High Definition (HD) Mode / Long Range (LR) Mode
System Audio Frequency Response 80 Hz to 20,000 Hz (Flat tracking down to 3 dB)
Maximum Audio Input Power Max. 960 mW power consumption threshold
Audio Gain Adjustment Scale 0 dB to +62 dB (adjustable in highly precise 3 dB steps)
Integrated Low-Cut Filter Switchable: Flat, 60 Hz, 80 Hz, 100 Hz, 120 Hz
RF Output Transmission Power HD Mode: 10 mW RMS / LR Mode: 25 mW RMS
Power Solution (Transmitter) Optional BA 60 Li-ion Accupack (5.5 hrs) or B 60 Dry Battery Case (2 x AA)
Physical Dimensions Array 270 mm (Length) x 40 mm (Diameter)
Hardware Casing Finish Premium Matte Black Coating
Net Operational Weight Approx. 350 grams (including BA 60 pack and standard capsule)

In the Box: Production Package Inventory

  • 1 x SKM 9000 Handheld Transmitter (Matte Black, A1-A4 Band)

  • 1 x MZQ 9000 Heavy-Duty Microphone Stand Clip

  • 1 x Instruction Manual

  • 1 x Frequency Allocation Chart

  • (Note: Microphone capsule and power packs are sold separately to meet user preference)

Production Deployment and Modular Fitting Advice

System Architecture and Capsule Selection: Remember that the SKM 9000 is a modular component and cannot function on its own. It requires a compatible Digital 9000 or Digital 6000 series receiver and a screw-on microphone capsule head. When threading a capsule onto the black handle, ensure the concentric contact rings are completely free of dust or oils. Spin the capsule down smoothly hand-tight until it stops; never use tools to over-torque the head.

Managing Power Options on Stage: To keep active stage tracking seamless, the SKM 9000 requires either the BA 60 rechargeable lithium-ion battery pack (offering 5.5 hours of uncompressed transmission runtime) or the B 60 adapter frame for standard AA batteries. Monitor real-time telemetry on the receiver rack face or the transmitter's backlit display. If you notice severe voltage drop warning bars when using AA alkaline cells, prioritize a hot-swap before the 4-hour mark to maintain stable signal output.

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SKU: 33142986821

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4.0 ★★★★★
Based on 23 reviews
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Product Reviews
L
Verified Purchase
LCD
Belleville, US
★★★★★ 5
many feelings
Format: Kindle
I didn’t know what this book was about when I first started reading.. one thing I felt at the beginning was…amazement? I love writing letters, something I don’t do often, I recently bought this beautiful fountain pen, I wanted to start small, writing greeting cards to family and friends, birthday cards, thank yous, etc. what I didn’t expect is the emotional toll this book had on me, and other members of my family who read the book for our book club. The subject matters, death of a child, husband dying of cancer, the significance of May 29th, all impacted our family, and so, as I read this book, I had to put it down several times because I had to cry, compose myself, think of regrets I have, and remember. How amazing it is that Sybil was able to write all about the death of her child to her dead child. I always say that writing it down on paper releases your burden in your head…it is true, I think writing letters, even the ones she didn’t send helped her quiet her head, at least for a while. I truly love this book. I have been borrowing books from Libby to read for our book club for a very long time, there have been books that I fell in love with, and always thought if I want to read them again I’ll just borrow them again, this book is the first one that I want to own physically to put on my shelf and know that I have it to read over and over again when I want to reflect and then quiet my head. ( This is the longest review I’ve written about a book I’ve read, I hope it makes sense).
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
L
Verified Purchase
L. Higgins
Port Orchard, US
★★★★★ 5
Successful Epistolary Novel
Format: Kindle
When we first meet Sybil Van Antwerp, age 73, she is retired from law and spends a lot of time writing letters and emails. She also reads a lot and is interested in what her correspondents are reading. She has children and grandchildren, but she lives alone in Annapolis, Maryland, and doesn’t see her family very often. During the course of reading her correspondence, we very gradually learn about Sybil—her history and her present troubles. She is a complicated character and several times in reading The Correspondent I paused to ask myself what I thought of Sybil—did I like her? What about her kept me from the immediate response a reader usually has about the main character of a book? Even at the end of the book, I am still ambivalent about Sybil, but I certainly understand her much better. Sybil, herself, and the book have so many layers. There is true depth to the story. My book club took deep dives into it over a period of three weeks, and I don’t think we have sampled all the topics represented in this book. It is a wonderful novel for stimulating meaningful discussion. Neurodivergence is not called out or named, but it comes to mind in thinking about Harry, a child who is the son of a judge, a former colleague of Sybil. The boy doesn’t quite fit in socially with his peers, but he is brilliant. Sybil makes the perfect “pen pal” for Harry because they have some of the same characteristics. As a child she was punished for “insolence and rudeness,” but her parents were just trying to mold her into a polite young lady as expected by society. She was blunt and didn’t have many friends. There are so many other issues worthy of discussion, but they would most certainly bring up spoilers. I won’t do that to you. Readers should have the opportunity to see the story gradually emerge from the letters, including a continuing one that the reader doesn’t know to whom Sybil is writing. Sybil sets the word “stone” for secrets, and there are stones in this book making it a puzzle, a mystery of sorts—for the reader. As a reviewer, I tend to go quickly from one book to the next as soon as I have composed and published my thoughts. Characters in various books can even blend together. This is not the case with The Correspondent. The characters in this book, especially Sybil, have stayed with me and come to mind frequently as I go through my day. Virginia Evans has created a fictional world with impact. Just as Sybil needed time (years in her case) to process the events of her life, the reader will need time to process them and their effects on Sybil as well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 15, 2026
C
Verified Purchase
ChaCha
Houston, US
★★★★★ 5
Better Than the Movie
Format: Hardcover, Format: Hardcover
I picked up Remarkably Bright Creatures after hearing so much buzz about it, and it absolutely lived up to the hype. This is one of those rare books that is heartfelt, funny, emotional, and completely unique all at the same time. The characters feel real and layered, and the story unfolds in such a thoughtful, satisfying way. Marcellus the octopus completely steals the show. I didn’t expect to become so attached to an octopus, but his chapters were easily my favorite part of the book. They added humor, wisdom, and so much heart to the story. If you’ve already seen the movie adaptation but haven’t read the book yet, you absolutely should. The book goes so much deeper emotionally and gives so much more background and connection between the characters. I enjoyed the movie, but the book made me care about the story on a completely different level. The writing is approachable and easy to get into, but it still leaves a lasting impact. This would make a great book club pick or gift for anyone who enjoys character-driven stories with warmth and emotional depth.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
K
Verified Purchase
Kindle Customer
Birmingham, US
★★★★★ 5
Beautiful!
Format: Kindle
I heard about this book in a conversation at a craft party and ordered it the same night. I was not disappointed. I fell in love with Marcellus and Tova and their delightful relationship, and with all the ancillary characters that made this book so special. The ending was so very sweet and satisfying as well. Great 1st book!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
S
Verified Purchase
Stephanie McCall
Waukegan, US
★★★★★ 4
A Remarkable Book--I Want More Like It!
Format: Kindle
I stumbled on Remarkably Bright Creatures among my recommendations. As often happens, the premise intrigued me enough to read it even though I didn't know the author. Well, if Shelby Van Pelt often writes like this, I definitely want more of her books. The friendship between Tova the aquarium cleaning lady and Marcellus the giant Pacific octopus is a definite selling point in this book. It's a great twist on the "A Kid and Their X" trope (the kind of thing you see in stuff like Where the Red Fern Grows, Old Yeller, Free Willy, and so forth). This one, I am pleased to report, is far less cheesy and saccharine. Tova is a multifaceted character whose life may seem small in her estimation, and probably is if we go by what is a "normal" life in a small seaside town. Yet that life has been stuffed with complex emotions, unanswered questions, and a longing for "more" that I think everybody can relate to. At least, I certainly could. As for Marcellus, he's multifaceted, too. A part of me did stick with his point of view, and story, because it is a story of a "remarkably bright," underestimated creature trapped and controlled in a world he doesn't understand. I have cerebral palsy and was diagnosed as level 1 autistic this spring; I'm still looking back and trying to heal from a lot of the latter's implications. So in a visceral way, yeah. I'm not a captive animal or mistreated, but I understood how Marcellus felt. What I liked even better about his story though, is that Marcellus' story doesn't stop there. Marcellus actually has a life and a history that Shelby Van Pelt, Tova, Cameron, and other characters dig into. He's not just a captive yearning for freedom and mourning lost opportunities, as often happens with similar stories. He makes wry, witty, yet quiet, non-snarky observations about humans. He cares deeply for Tova because she took time to know him as a "person," but also because she's the only human who has ever stopped long enough for Marcellus to know as a real "person." Marcellus gets to be the conduit of real revelation and change for people inside and outside his world. That's amazing, and frankly, it's a lot more than many human characters get. Remarkably Bright Creatures couldn't succeed with just Tova or Marcellus though, or at least not as well as it did, I think. The other characters pop off the page as well. Cameron is my favorite, precisely because I didn't expect to like him at first. By his own admission, he comes off as a burnout and a loser, and I admit, that's how I saw him to begin with. But as with Tova and Marcellus, Cameron is hiding a lot of layers, a lot of depth. He's got a great heart, but he's still a typical, kinda clueless 30-year-old guy (and I'm still a 30-something so I say that tongue in cheek). He's vulnerable but not pitiful; he plays the victim sometimes, but then he gets mad at being called out on that and wants to do better. He struggles and is a burnout, but he's got good, solid friends and some real interests and potential. In other words, I got really into his arc, especially once Tova, Marcellus, and even Ethan got involved. As for Ethan, he's unexpectedly cool, as well. I admit some brownie points with him, as I love all things Scottish or Irish and he is of Scottish descent. But I also didn't expect a shopkeeper in his '70s with a gruff edge to be a Grateful Dead fan or to get along so well with a neat and tidy, tiny Swedish aquarium cleaner, so brownie points on plot and character there. In fact, Ethan's role in the story, in particular, went all kinds of unexpected places, so without spoiling anything, I'll tell you to keep an eye on it. Finally, Shelby wins some extra brownie points for a lot of the "little" things that "pop" out at me when reading a book like this one. For instance, I love cats and love the reluctant yet affectionate relationship Tova develops with a stray cat. I love Marcellus' Collection and the pride and care he takes in it. I love and felt some heartbreak over Tova's reminiscing about the attic playroom that never got to be a playroom. But I think the thing I loved most about Remarkably Bright Creatures is how remarkable Shelby showed readers humans--and creatures--can be, without getting heavy-handed or cheesy. There are some romances here, so to speak, but this is a relationship novel, and those are, have been for the past several years, some of my favorite ones. There is some language here, so caveat emptor if that's not your thing. From a writer's perspective, I also wondered how much some threads or characters were actually needed. For instance, looking back, I understand why Tova had a brother, but I'm unsure how much he furthered the plot. Similarly, I understand the roles of Avery and Marco but again, am unsure how much they furthered the plot. Also, I almost hate to say it, and I could be wrong about this. After all, I know about as much concerning octopi as the average person who watches Jeopardy (which I do). But while Marcellus' plot thread is great, and while I definitely understand suspension of disbelief, I did wonder along with Cameron how much those boundaries were pushed. I mean, I buy Marcellus getting out of his tank, and with the right Collection items, I guess Tova and Cameron could've figured out whatever they needed to know. But...there's a logical shard of me that isn't quite sure she buys how everything lined up, I guess. All that aside though, Remarkably Bright Creatures is still a remarkable book. As often happens, I'm now eager to find more like it. And yes, it does get a hearty recommendation. At the very least, I'll want to take closer looks next time I go to an aquarium.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 22, 2025

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