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Description
Shure ULXD2/KSM9 Digital Handheld Wireless Microphone Transmitter with KSM9 Capsule (H50: 534 to 598 MHz)Key Features For ULX D and QLX D Digital Systems KSM9 Condenser Mic Capsule Supercardioid Cardioid Polar Pattern Interchangeable Capsule Design Automatic Gain Adjustment 1 10 20mW RF Output Power Mute Mode, Backlit LCD Secure AES 256 Encryption Networked Intelligent Charging 12 Hr with SB900A Rechargeable Battery The Shure ULXD2 KSM9 is a digital handheld wireless microphone transmitter compatible with ULX D and QLX D receivers. It comes equipped with
Key Features
- For ULX-D and QLX-D Digital Systems
- KSM9 Condenser Mic Capsule
- Supercardioid/Cardioid Polar Pattern
- Interchangeable Capsule Design
- Automatic Gain Adjustment
- 1/10/20mW RF Output Power
- Mute Mode, Backlit LCD
- Secure AES-256 Encryption
- Networked Intelligent Charging
- 12 Hr with SB900A Rechargeable Battery
The Shure ULXD2/KSM9 is a digital handheld wireless microphone transmitter compatible with ULX-D and QLX-D receivers. It comes equipped with a dual-diaphragm KSM9 condenser capsule that captures sonic nuances with superior detail, delivering precise vocal reproduction for high-end live performance.
The black KSM9 capsule offers two switchable polar patterns to provide FOH engineers with more choices in dealing with varying environments or the microphone techniques of different performers. The cardioid pattern offers solid gain before feedback, with minimal off-axis coloration, for a warm, full sound. The supercardioid pattern offers increased sound isolation and gain before feedback, an ideal choice for applications where there are high levels of ambient noise, or where multiple instruments or vocalists are close together.
With rugged, yet lightweight aluminum housing, the ULXD2/KSM9 transmitter delivers pristine audio quality and RF performance, AES 256-bit encryption for secure transmission, and advanced rechargeability options for professional sound-reinforcement applications.
Clear, Accurate Audio with Interchangeable Capsule
- The unit delivers clear, reliable 24-bit/48 kHz digital audio over its entire 330' range, great for live performances and presentations in music venues, houses of worship, and conference spaces.
- The KSM9 capsule with dual 3/4” gold-layered, low-mass Mylar diaphragms provides a consistent frequency response.
- The mic features Class-A, discrete transformerless preamplifier for transparency, extremely fast transient response, and no crossover distortion.
- The integrated three-stage "pop" protection grille reduces plosives, wind, and other breath noise.
- The interchangeable capsule design allows you to replace the KSM9 capsule with a Shure capsule that’s ideal for your application and simply screw it onto the transmitter—including KSM9HS, SM58, SM86, SM87A, Beta 58A, Beta 87A, Beta 87C capsules, and more.
User-Friendly Features in a Rugged Housing
- The unit quickly syncs with a wireless receiver via infrared at the touch of a button.
- Shure Proprietary Gain Ranging automatically adjusts the mic input level, eliminating the need for transmitter gain adjustments.
- The power button conveniently doubles as mute switch, while preserving RF lock.
- Frequency and power lockout functions prevent accidental or unauthorized changes during events.
- A backlit LCD with easy-to-navigate menu and controls lets you quickly access frequency, group, and channel settings, along with mute and lock status, RF output, and remaining battery life.
- 1/10/20mW selectable RF output power allows you to increase either the transmitter's range or the number of mics operating simultaneously.
Convenient Power Management Options
- Operates for up to 11 hours on two AA batteries.
- Optional Shure SB900A lithium-ion rechargeable battery pack offers intelligent power management with over 12 hours of battery life, precision metering in hours and minutes, and zero memory effect.
- External charging contacts allow for docked battery charging with the SBC200 dual-docking charger (available separately).
- The networkable SBC220 charger (available separately) allows for remote power monitoring via Shure’s Wireless Workbench software.
Shure ULX-D2 Specs
| Wireless Technology | Digital UHF |
| RF Frequency Band | H50: 534 to 598 MHz |
| RF Bandwidth | 64 MHz |
| Frequency Step Size | 25 kHz |
| RF Channel Scanning | Auto-Scan |
| Max Operating Range | 328.1' / 100 m |
| Sample Rate/Resolution | 48 kHz / 24-Bit |
| Latency | < 2.9 ms |
| Encryption | AES 256 |
| Modulation | Proprietary |
Transmitter
| Transmitter Type | Handheld |
| RF Output Power | 1 / 10 / 20 mW (Switchable) |
| Audio I/O | None |
| Muting | Off/On Switch |
| Gain Range | 0 to 21 dB (3 dB Steps) |
| Sync Method | IR |
| Antenna | 1 x Internal Single-Band Helical |
| Power Requirements | Battery |
| Battery Type | 2 x AA (Included) 1 x Shure SB900A (Not Included, Replaceable) |
| Approx. Battery Life | Med.: 11 Hours (Alkaline) Med.: 12 Hours (Lithium Shure SB900A) |
| Display & Indicators | 1 x Backlit LCD (Channel, Group, Mute, RF Output Power, Sync) |
| Housing | Aluminum |
| Operating Temperature | 0 to 122°F / -17 to 50°C |
| Storage Temperature | -20 to 165°F / -28 to 73°C |
| Dimensions | 10.9 x 2" / 278 x 51 mm |
| Weight | 12.3 oz / 348 g |
Microphone
| Microphone Type | Handheld Capsule |
| Sound Field | Mono |
| Capsule | Electret Condenser |
| Polar Pattern | Cardioid, Supercardioid |
| Frequency Range | 50 Hz to 20 kHz |
| SNR | 72 dB |
| Maximum SPL | 152 dB SPL |
| Sensitivity | -51 dBV/Pa at 1 kHz |
| Dynamic Range | Hypercardioid: 130.8 dB Wide-Angle Cardioid: 131.3 dB |
Packaging Info
| Package Weight | 1.6 lb |
| Box Dimensions (LxWxH) | 12.7 x 4.9 x 3.6" |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.4 ★★★★★
Based on 9 reviews
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Product Reviews
★★★★★ 4
Rattles like a vibrator when it mops after about 2 weeks.
Size: C20 renewed
Works ok. Vacuum beater and opening is only about 6 inches long and the dirt box in the bot is really tiny. Beater is way to tiny to do any real vacuuming on even short shag rugs.
The mop works but basically just evenly spreads out whatever dirt is on the floor, evenly across your entire floor and sands the floor with it.
After about 2 weeks the bot starts rattling REALLY loud and vibrating like its falling apart. The crazy loud rattling noise is coming from the plastic mop pad axles when they spin.
The vacuum bag inside the base is very good quality, but small and not reusable. I cut the far end of the bag down the middle and glued on some velcro strips to each side to re-close it, which allows me to empty the bag and then close it back up again. Pretty sure this thing transmits everything it sees/does back to China.
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Reviewed in the United States on April 30, 2026
★★★★★ 1
Issues
Size: C20 renewed
Spent all this money for it to consistently have problems. It doesn’t even mop anymore because it keeps saying there is a problem with the sewage tank. I’ve only turned it on less than 5 times and it’s already having issues. Can’t even get it to mop anymore
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Reviewed in the United States on April 25, 2026
★★★★★ 5
Works great
Size: C20 renewed
I saved some money by purchasing this certified like new. Worked well out of the box, but there was an issue with it and the people that do in fact check to ensure these work should do a better job. The issue was with the water and emptying it into the dirty tank. Just kept giving me an error. So, I had to look online for troubleshooting issues. After maybe 20-30 minutes I figured out a tiny little metal piece was loose where the water would have been distributed to. I was able to pop it out and place it back in. After that, and with the right settings selected through the app, everything works great. Well worth it.
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Reviewed in the United States on March 29, 2026
★★★★★ 3
Good mop, bad avoidance
Size: C20 renewed, Size: C20 renewed
I have mixed feelings about this product:
The good – It does in fact clean very well. The mop picks up dirt effectively and the vacuum works very well. It was also surprisingly good at swapping from carpet to wood. I have a high door mat and it ran right over that. It was also good at mapping rooms and positioning, the floor map and restricted areas worked nicely. App also works well.
The bad – Obstacle avoidance, it has none. It will run into everything over and over. If the item is too light (shoes, mic items, etc), it will run up on top of them or push them. It will also get stuck if it runs over something. Cords have no chance. The lidar does not work for anything except a wall, and even there it was unable to deal with short trim (1” trim was too low for the lidar and it kept running into the trim). I was having to run around and ensure there was nothing on the floor for it to work effectively. It also had a lot of trouble with my dining table, it would spend 20 min bumping up against it trying to get everywhere.
Overall – this is a great robot mop if your floors don’t have any items on them (or you can restrict any loose items to one area and make it a no-go zone). If that is true then this is a great mop for the price and I would recommend. In practice for me it turned out to be quite annoying due to its limited obstacle avoidance and was almost more of a pain then just using a Swiffer.
Note – I had to return because it was making a scraping noise (refurbished version), that is not reflecting in my rating. Though I am also not re-buying due to these issues.
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Reviewed in the United States on September 11, 2025
★★★★★ 5
neat
Size: C20 renewed
very nice product
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Reviewed in the United States on May 11, 2026