TD-220
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TD220 is our high end microphone line-up that contains 2 microphones and a receiver. TD220 provides provide high professional without any interference, suitable for Karaoke or conferencing. It is wireless, anti-noise, energy efficient, dual channel, has superior range and only requires simple setup.
Wireless and Noiseless
Wireless
TD220 microphone using wireless connection between the microphone and receiver to transmit audio signal. Frequency is synchronised via infrared, PLL synthesised technique and digital pilot technique to ensure a stable connection.
Anti-Noise
TD220 microphone adopts electronic volume control to allow more precise volume control and an end to the resistance of the potentiometer noise so that the audio would be more clear and enjoyable.

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Energy Efficient and Dual Channel
Energy Efficient
TD220 microphone contains a LED display that indicates the system volume, battery, channel of A/B switch, work frequency, receiving distance gear and the system lock. Despite all of the monitoring, energy consumption is optimised so that not intense energy drainage would occur even in long sessions.
Dual Channel
Dual channel independent inquiry system for minimizing off frequency. This makes the connection between the microphone and the receiver more stable and with less interference.
Superior Range and Simple Setup
Superior Range
TD220 microphone automatically search for the cleanest available channel without the need of manually changing the channel if there is any interference in the channel or the signal strength is weak.
Simple Setup
Microphone LED display shows a red voltage alarm when the transmitter battery's voltage is low so that users would know when to change the battery or know why the microphone is not functioning.

WIRELESS
Synchronizing frequency between receiver and transmitter via infrared, PLL synthesized technique and digital pilot technique.
SIMPLE SETUP
Display shows a red voltage alarm when the transmitter battery voltage low.
ENERGY EFFICIENT
LED display indicates the system volume, battery, channel of A/B switch, work frequency, receiving distance gear and the system locked key etc.
DUAL CHANNEL
Dual channel independent inquiry system for Minimize off frequency
ANTI-NOISE
System adopts electronic volume control so that higher precision and put an end to the resistance of the potentiometer noise.
SUPERIOR RANGE
Automatically search for the cleanest channel.
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Specification
Transmitter
Microphone Material
Aluminium Alloy Tube
Oscillation Mode
PLL (Phase Locking Loop)
Frequency Band
UHF740MHz~790MHz
Frequency Width
50Mhz
Frequency Regulation
Automatic lock receiver working channel / manual regulation
Output Power
15mW
Harmonic Radiation
< 55 dBc
Max Deviation
±48Hz
Sound
Moving-Coil
Battery
2 * AA
Operation Display
LCD Display Battery Capacity and Channel
Receiver
Operating Frequency
740-790MHz
Receiver Mode
Intermediate-frequency Superheterodyne Structure with Twice Conversions
The First Intermediate Frequency
100 MHz
The Second Intermediate Frequency
10.7 MHz
Squelch Limited
0-40dB
Spurious Noise Suppression
>80dB
Audio Output
Unbalance +4Db(1.25V)/5KΩ
Balance +10Db(2.5V)/600Ω
Power Supply
DC11-16V(Rate 12V)
Electricity
Single Receiver, <200mA
Double Receiver, <350mA
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