MiPRO ACT-818 Single Channel Digital Wideband Wireless Microphone System



  • The ACT-818 is a 1/2U single channel rack-mountable receiver with metal chassis.
  • Full-color VFD (vacuum fluorescent display) for clear viewing of all parameters. All controls are intuitive and easily accessible, allowing for quick and easy system setup via a single rotary control.
  • Enhanced RF circuitry improves anti-interference characteristics and system compatibility with 64 MHz wide bandwidth allows more interference-free channels to be selected.
  • New digital diversity receiving technology eliminates signal dropout and enhances receiving range.
  • Full-Range sound quality won’t be changed by the strength of RF signals or operation distance.
  • Digitally-processed RF circuitry and DigitnamicPlus™ technology eliminates compander noise, assuring a wireless sound quality that easily rivals cable transmission.
  • Improved proprietary Audio A/D Converter provides a true dynamic range of 115 dBA, T.H.D. < 0.03% at 1 kHz with < 2.7 ms latency
  • SPDIF Digital Audio Interface facilitates a direct connection to digital mixing consoles and transmits signal without distortion, ensuring a stable S/N ratio which will not deteriorate in long distance transmission.
  • Proprietary 256-bit encryption, provides secure audio transmission, preventing unauthorized listening.
  • 10 built-in SmartEQ™ presets and user-defined microphone capsule equalization allows faithful sound reproduction to suit artists’ preferences.
  • 10 built-in digital anti-feedback SmartEQ™ presets minimize feedback effectively without sacrificing sound quality.


Overall System
Frequency Range UHF 480 – 960 MHz (country dependent)
Bandwidth 64 MHz
Channel Grid 25 kHz
Channel Set-up Scan & ACT sync
Audio Sampling 24-bit / 44.1 kHz
Audio Frequency Response 20 Hz – 20 kHz (-2 dB)
Encryption 256 bit
Audio Compression 2nd generation DSP inertial coding
Latency 2.7 ms
S/N Ratio (analog output) > 115 dB(A)
T.H.D. < 0.03% @ 1 kHz
Chassis / Channel EIA Standard 19″ 1/2U, Single
Sensitivity 12 dBμV at S/N ≒ 118 dBA (D)
Image & Spurious Rejection > 85 dB
Receiving Mode Digital Diversity
Audio Output Balanced XLR , Unbalanced 6.3 mm (1/4 “)
Analog Output Switch Mic / Line
Digital Audio Interface AES3id output. BNC female
Digital Equalizer 10 built-in SmartEQ™ & 10 built-in digital anti-feedback SmartEQ™
PC Interface USB or RS-232 interface. Proprietary MIPRO ACT-BUS
Display Full-color VFD
Battery Meter Transmitter battery status
Antenna Input 2 × 50Ω TNC female connector
Power Supply External AC switching power
Dimensions (W × H × D) 210 × 44 × 230 mm / 8.3 × 1.7 × 9 “
Weight Approx. 1.1 kg / 2.4 lbs
Operating Temperature -10 – +60℃

Click here to download MIPRO ACT-818 specification

Click here to download MIPRO ACT-818 & ACT-828 brochure

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