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Adastra UA90 Compact 100V Mixer-Amplifier

£16199
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Description

The Adastra UA90 Compact Mixer-Amplifier is a feature-rich solution for small to medium PA installations requiring flexibility and reliable performance. Built into a half-width 1U chassis, it includes a 5-input mixer with three switchable mic/line channels, an RCA line input, and a 3.5mm aux input. Each channel is controlled from the front panel, along with master output, bass, and treble adjustment.

The UA90 provides mono output to either 100V line or 8 Ohm speakers via screw terminals. Switchable phantom power is available on channel 1, making it suitable for condenser microphones. A class D amplifier with transformer output ensures efficiency, while 24V fire alarm mute contacts guarantee integration into emergency systems.

Supplied with hardware for rack-mounting two units side by side, it offers easy installation in cabinets, walls, or under desks. Designed for versatility and practicality, the UA90 is ideal for schools, offices, retail spaces, and small venues that require clear sound and flexible connectivity.

  • 24V fire alarm mute contacts
  • Supplied with hardware for rack-mounting 2 units
  • 5 input channels
  • 100V line or 8 Ohms operation
  • Switchable +20V phantom power CH1
Specification
Power supply 170-264Vac, 50Hz (IEC)
Amplifier : construction Class D + transformer output
Inputs Mic/line (combo), 2 x mic/line (6.3mm), line (RCA), aux (3.5mm)
Line output 2 x RCA (mono)
Speaker output Euroblock terminals: 100V / 8 Ohms / Com
Mute 24V relay contacts
THD <0.4% @ 1kHz
Input impedance 1k Ohms (mic/line)
Input sensitivity -10dB (line), -45dB (mic)
SNR 80dB (line), 75dB (mic)
Frequency response 100Hz - 18kHz
Phantom power +20V CH1 (XLR or rear terminals)
Output power : rms 90W
Dimensions 300 x 210 x 44mm
Weight 2.99kg
Downloads

Product Manual

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    Description

    The Adastra UA90 Compact Mixer-Amplifier is a feature-rich solution for small to medium PA installations requiring flexibility and reliable performance. Built into a half-width 1U chassis, it includes a 5-input mixer with three switchable mic/line channels, an RCA line input, and a 3.5mm aux input. Each channel is controlled from the front panel, along with master output, bass, and treble adjustment.

    The UA90 provides mono output to either 100V line or 8 Ohm speakers via screw terminals. Switchable phantom power is available on channel 1, making it suitable for condenser microphones. A class D amplifier with transformer output ensures efficiency, while 24V fire alarm mute contacts guarantee integration into emergency systems.

    Supplied with hardware for rack-mounting two units side by side, it offers easy installation in cabinets, walls, or under desks. Designed for versatility and practicality, the UA90 is ideal for schools, offices, retail spaces, and small venues that require clear sound and flexible connectivity.

    • 24V fire alarm mute contacts
    • Supplied with hardware for rack-mounting 2 units
    • 5 input channels
    • 100V line or 8 Ohms operation
    • Switchable +20V phantom power CH1
    Specification
    Power supply 170-264Vac, 50Hz (IEC)
    Amplifier : construction Class D + transformer output
    Inputs Mic/line (combo), 2 x mic/line (6.3mm), line (RCA), aux (3.5mm)
    Line output 2 x RCA (mono)
    Speaker output Euroblock terminals: 100V / 8 Ohms / Com
    Mute 24V relay contacts
    THD <0.4% @ 1kHz
    Input impedance 1k Ohms (mic/line)
    Input sensitivity -10dB (line), -45dB (mic)
    SNR 80dB (line), 75dB (mic)
    Frequency response 100Hz - 18kHz
    Phantom power +20V CH1 (XLR or rear terminals)
    Output power : rms 90W
    Dimensions 300 x 210 x 44mm
    Weight 2.99kg
    Downloads

    Product Manual