12% OFF Total PURCHASE Over $249 Promo Code: SAVE12 Details

Gemini UHF-4100M 100-Channel UHF Wireless Handheld Mic System

*Roll over image to zoom

*Click image to zoom


Orders received by 3PM ET ship same business day.
In-stock orders only.
Placed before 3PM EST
Mon-Fri (excluding Holidays).
Some exclusions apply.
Item#: UHF4100M
UPC: 747705207135
Availability: In Stock Online
Check In-Store Availability

I DJ NOW - Babylon, NY
Mon - Sat 10am - 8pm
Sun 11am - 5:00pm

I DJ NOW - Queens, NY
Mon - Fri 10am - 9pm
Sat 10am - 7pm
Sun 12 noon - 6pm

Shipping Estimate Map
Shipping Estimate Map
Financing Options Available

Financing Options Available:

Simply put, our financing plans allow you to get the gear you need now, at the price you want, with the time to pay, on your terms.

See How Easy It Is To Apply
Free Standard Shipping

Free Shipping Details:

Free Shipping on most orders with minimum purchase of $50 or more for a limited time. Ground shipments only in the lower 48 contiguous United States. Excludes oversized or overweight items such as oversized speakers, oversized cases, trussing & staging. Other exclusions include some fluids, some parts & special orders. Any questions, please call 1-800-355-7746 during normal business hours. Offer subject to change or termination without notice. Not responsible for typographical errors.



The lowest price is not always the best price. When you shop with us, you can always expect to get our BestPrice+Plus guaranteed.

Learn More
Seen It For Less?

Regular Price: $129.95

Special Price: $98.40


2-Yr Extended Consumer Priority Service:

Protect your investment with a warranty from Consumer Priority Service. Buying a Consumer Priority Service extended protection service plan from I DJ NOW, not only means you’re getting the highest level of customer service and peace of mind, but it also means you can rest assured in the event your product does need repairing. The repair center technicians are factory trained and authorized to repair your product and only use state of the art testing equipment needed to properly diagnose and repair your product. Why worry about not having a warranty long enough to cover the majority of use? Simply purchase this affordable and sensible extended warranty now and be worry free!

Questions? Contact Us.

About This Product

Gemini UHF-4100M 100-Channel UHF Wireless Handheld Mic System

Gemini’s UHF-4100M Wireless Handheld Mic System provides clear, accurate vocal reproduction without the burden of cables, ensuring wired limitations never force you to sacrifice passion or energy during a performance. Ideal for lead singers, MCs, DJs, karaoke enthusiasts and anyone seeking a high-quality wireless handheld solution, the UHF-4100M offers superior reliability and ultra-clear reception at a completely affordable price.

Roadworthy. Crystal clear. Frequency-agile.

Built to withstand the rigors of heavy touring or consistent use at bars, clubs, auditoriums and houses of worship, the UHF-4100M features a robust 100-channel UHF receiver with a range of 250 feet. Using Phase Locked Loop (PLL) circuitry to prevent phasing issues that plague other wireless systems, the receiver’s front panel provides a Power button and rotary Volume control, along with Group and Channel adjustments for setting the desired frequency. RF and AF LED indicators also let you monitor incoming signal strength, while balanced XLR and unbalanced ¼-inch outputs offer true connecting convenience. The unit even gives you the option to set your frequency manually or allow the receiver to automatically find an optimal frequency.

Professional vocal reproduction in the palm of your hand.

The UHF-4100M’s dynamic handheld microphone transmitter features a high-sensitivity cardioid capsule that gives your vocals the professional sound you crave, while noise absorption components within the mic barrel eliminate switch shock and handling noise. The transmitter also provides a convenient Power/Mute button and runs on two AA batteries with up to eight hours of battery life.

Ditch the cables.

Why restrict your performance with wires when the UHF-4100M gives you total freedom of mobility? Ditch the cables and let your natural energy electrify the crowd with this high-quality wireless solution.

UHF-4100M Features:

• Single UHF receiver with 250′ range.
• US: 100 operating frequencies between 682MHz and 698MHz.
• EUR: 100 operating frequencies between 854MHz and 865MHz.
• Allows up to 8 mics to be used simultaneously without interference.
• Switchable automatic/manual frequency selection.
• Phase Locked Loop (PLL) circuitry for increased reception.
• RF and AF LED indicators for monitoring signal strength.
• Auto mute with built-in noise reduction.
• Front panel output level control.
• Balanced XLR and unbalanced 1/4″ outputs.
• Microphone On/Off switch.
• Unidirectional, handheld dynamic microphone transmitter.

Gemini UHF-4100M Wireless System Specifications
Frequency range: USA: 682-698MHz
  Europe: 854-865Mhz
Receiving system: PLL synthesized
Frequency Stability: +/- 0.005%
Frequency Response: 50Hz-15kHz +/- 3dB
Signal-to-Noise Ration: 90dB
Modulation Mode: FM
IF Frequency: 80.5 MHz
T.H.D.: 1% (@ 1kHz)
Sensitivity: 10dBuV (FM: 40kHz, S/N>85dB)
Power Supply: 12V DC
Audio Output: Balanced XLR
  Unbalanced 1/4″
Dimensions 210 x 138 x 45 mm
RF Power Output: <10dBm
Oscillation Mode: PLL Synthesized
Spurious Emission: > 50dB below carrier freq.
Frequency Stability: 30.005% with quartz control
Max Modulation: +/-60kHz
Current Consumption: 100mA
Battery Type: Two (2) AA Alkaline
Battery Life: 8 hours
Microphone Element: Unidirectional Dynamic Mic
Polar Pattern: Cardioid
Dimensions: 250×38 mm
The UHF-4100M Box Includes:

(1) UHF-41000 Receiver
(1) Handheld Wireless Microphone
(1) Power Adapter
(1) User Guide & Warranty Card