The Ampyon MI-4000 is a professional dual-channel UHF wireless microphone system designed for karaoke rooms, stages, events, presentations, and entertainment venues. The package includes two metallic handheld transmitters and one True Diversity receiver, allowing two singers or presenters to use the system at the same time.
With 100 selectable channels per microphone, PLL frequency control, automatic channel search, adjustable receiver squelch, drop-detection auto mute, independent initial and maximum volume settings, and a listed operating distance of at least 150 feet under suitable conditions, the MI-4000 is designed for flexible installation and reliable day-to-day use.
The MI-4000 is a strong fit for:
If you want a professional-style dual wireless microphone system with more channel flexibility, adjustable squelch, and automatic channel search, the MI-4000 provides a practical upgrade over a basic two-microphone package.
Customers choose it for wireless control and installation flexibility:
The MI-4000 combines dual-microphone operation with receiver controls intended to make frequency setup, gain management, and permanent installation easier.
Helpful to know:
Wireless microphones are not Bluetooth microphones. The handheld transmitters communicate wirelessly with the receiver, while the receiver connects by cable to the sound system.
The MI-4000 is designed to support stable dual-microphone operation with flexible frequency selection and receiver-side adjustment.
The MI-4000 package includes two metallic wireless handheld transmitters, allowing two users to sing, speak, or present at the same time.
The durable handheld construction is intended for repeated karaoke, event, and performance use.
Each microphone operates on its own independent wireless channel.
This allows both microphones to be used simultaneously for duets, co-hosting, presentations, interviews, and group entertainment.
The MI-4000 uses a True Diversity receiver architecture designed to compare received signals and maintain a more stable wireless connection.
This can help reduce brief dropouts caused by movement, signal reflections, or changing transmitter position.
The package includes two antennas for the receiver.
Correct antenna placement and keeping the receiver clear of major obstructions help support more reliable wireless performance.
The MI-4000 provides 100 selectable channels for each of its two microphone channels.
More channel options can help users find cleaner operating frequencies in environments with other wireless equipment.
The system uses FM modulation with PLL frequency control.
PLL control is designed to help maintain stable channel operation and consistent communication between the transmitters and receiver.
The MI-4000 includes an automatic channel-search function designed to help locate cleaner available channels.
This can simplify installation in karaoke rooms or venues where other wireless systems may already be operating.
The supplied specifications list channel spacing of 250 kHz.
Defined channel spacing helps organize the available operating channels within the supported frequency plan.
The handheld microphone is designed to mute automatically when it detects that it has been dropped or is no longer in normal use.
This can help reduce unwanted impact noise and sudden output through the connected amplifier and speakers.
The MI-4000 provides initial-volume and maximum-volume settings.
These controls can help installers establish a consistent startup level and limit excessive output in shared or commercial karaoke environments.
An external squelch control is located on the rear panel of the receiver.
The supplied description states that the squelch setting can be adjusted for working distances from approximately 10 to 80 meters, depending on the installation and interference conditions.
The MI-4000 has a manufacturer-listed working distance of at least 150 feet under suitable conditions.
Actual range depends on walls, crowds, interference, receiver location, antenna placement, transmitter power, and line of sight.
The receiver supports balanced output or mixed output for connection to compatible mixers, amplifiers, and karaoke systems.
The exact connector layout should be confirmed from the current receiver panel or manual before installation.
The package includes one 1/4-inch to 1/4-inch microphone connection cable.
This cable can be used with compatible amplifiers or mixers that provide the appropriate input.
The MI-4000 has a listed audio frequency response of 50 Hz to 15 kHz.
This range is suitable for reproducing the main vocal frequencies used in karaoke, speech, and live presentation applications.
The system lists a signal-to-noise ratio above 105 dB(A) and total harmonic distortion below 0.3% at 1 kHz.
These specifications support clean vocal transmission when the receiver, mixer, amplifier, and gain structure are adjusted correctly.
The MI-4000 package includes a rack-mount kit for integration into compatible audio racks.
Rack mounting can provide a cleaner and more secure installation in karaoke rooms, stages, control booths, and event systems.
The supplied power specification lists support for 100–240V AC input with 12V DC output.
Use the supplied adapter and confirm the correct voltage and plug type for the installation location.
The package includes two metallic wireless handheld microphones and one professional receiver.
Yes. The MI-4000 has two independent microphone channels and supports simultaneous use of both handheld transmitters.
The system provides 100 selectable channels for each of its two microphone channels.
It helps the receiver locate cleaner available channels, which can simplify setup in environments where other wireless systems are operating.
The handheld microphone includes a drop-detection auto-mute function designed to reduce unwanted impact noise through the sound system.
The manufacturer lists a working distance of at least 150 feet under suitable conditions. Walls, crowds, interference, antenna placement, and line of sight can reduce actual range.
The rear-panel squelch control adjusts how strongly the receiver rejects weak or unwanted signals. Correct adjustment can improve stability, but setting it too high may reduce usable range.
The supplied specifications do not identify the exact battery type or quantity. Confirm this from the current transmitter or instruction manual before ordering replacement batteries.
Yes, when the amplifier has a compatible input. The package includes a 1/4-inch to 1/4-inch connection cable.
The manufacturer describes the system as suitable for multi-system karaoke installations. The practical number of systems depends on frequency coordination, local regulations, interference conditions, and the certified operating channels of each unit.
The package includes one MI-4000 receiver, two metallic wireless handheld microphones, two antennas, one power adapter, one 1/4-inch cable, one rack-mount kit, and one instruction manual.
Choosing a professional wireless microphone system involves more than comparing range or channel count. The MI-4000 should be matched with the correct amplifier or mixer inputs, legal operating frequencies, receiver placement, antenna position, squelch setting, and microphone gain.
Need help before ordering? Talk with Tittac before choosing your wireless microphones, amplifier, mixer, speakers, and connection setup.
Tittac Showroom
8762 Garden Grove Blvd Ste 105, Garden Grove, CA 92844
Local customers can visit the showroom. Out-of-state customers can still get help by phone, text, chat, or video before ordering.
| Microphone System Type | Dual-Channel True Diversity UHF Wireless Microphone System |
|---|---|
| Microphones Included | 2 Metallic Wireless Handheld Microphones |
| Receiver Channels | 2 Independent Channels |
| Selectable Channels | 100 x 2 |
| Modulation | FM with PLL |
| Manufacturer-Listed Frequency Range | 610 MHz - 820 MHz |
| Bandwidth | 60 MHz |
| Channel Spacing | 250 kHz |
| Frequency Stability | ±10 PPM |
| Receiver Sensitivity | -95 to -67 dBm |
| Audio Frequency Response | 50 Hz - 15 kHz |
| Signal-to-Noise Ratio | > 105 dB(A) |
| Total Harmonic Distortion | < 0.3% at 1 kHz |
| Listed Noise Ratio | ≥ 110 dB |
| Maximum Working Distance | At Least 150 ft. under Suitable Conditions |
| Squelch Adjustment Range | Approx. 10 m - 80 m |
| Transmitting Power | 3 - 30 mW |
| Audio Output | Balanced or Mixed |
| Receiver Power | 100 - 240V AC Input; 12V DC Output |
| Power Consumption | ≤ 8W |
| Included Accessories | Receiver, 2 Handheld Microphones, 2 Antennas, Power Adapter, 1/4-Inch Cable, Rack-Mount Kit, and Instruction Manual |
Eligible Ampyon wireless microphones, microphone receivers, and microphone systems purchased from TITTAC include a 2-year limited warranty covering approved manufacturing defects under normal residential use.
Coverage applies to eligible Ampyon wireless microphones, microphone receivers, and microphone systems purchased from TITTAC.
This warranty applies to eligible Ampyon microphone products purchased from TITTAC on or after June 24, 2026. Earlier purchases remain covered under the warranty terms in effect at the time of purchase unless otherwise confirmed in writing.
Contact TITTAC with your microphone model, order or invoice information, purchase date, and a description of the issue. Photos or videos may be requested to assist with diagnosis.
Please do not return any product before receiving warranty approval and return instructions.
TITTAC offers fast shipping within the 48 contiguous United States, a straightforward 30-day exchange policy, and a 30-day return policy for eligible products.
This policy does not apply to massage chairs, which are subject to separate freight delivery, exchange, and return terms.
Please inspect your package upon delivery. If an item arrives damaged or incorrect, contact TITTAC promptly and provide clear photos of the product, packaging, and shipping label.
You may request an exchange within 30 days of delivery for another item in the same product category.
Eligible products may be returned within 30 days of delivery for any reason, subject to prior approval from TITTAC.
For deliveries outside the United States, the customer is responsible for import requirements, customs duties, taxes, and related fees.
If an international shipment is refused, the original shipping charge and return shipping charge may not be refundable.
Contact TITTAC for shipping assistance, exchange approval, return instructions, or help with a damaged delivery.
