Adastra UM30 100V Amplifier with Bluetooth & FM Radio Ceiling Speaker System inc. 4 x 5.25" Ceiling Speakers

Adastra  |  SKU: UM30-CC5V-4
£325.80 £361.96


The Adastra UM30 is a versatile 100V mixer-amplifier with USB audio player, an FM tuner, and a BT wireless receiver in an ultra-compact housing.

It offers precise volume control over the microphone, line input, and USB/FM/BT sections, and connects to either a 100V line or an 8 Ohm speaker load via the rear panel screw terminals.

Its 5.25" Background Ceiling Speakers also feature a rotary switch for tap power ranging from 2.5 to 20W via 100V line or 8 Ohm option, making it ideal for small to medium PA installations in pubs, bars, restaurants, and other environments.


  • SMALL BUT POWERFUL: Ultra compact form factor and efficient class D amplifier designed to provide a reliable, powerful audio experience in a compact form. Enjoy clear sound quality with a sleek design, perfect for spaces with limited dimensions, offering up to 120 watts RMS of power without taking up much room.

  • FEATURES: The UM30 100V Amplifier is equipped with an internal USB/FM/BT audio player for convenient access to audio content. It offers three streaming options, allowing you to easily tune in to your preferred songs, shows, and radio broadcasts.

  • APPLICATION OPTIONS: choose either 100V line or 8 Ohms operation. This system is engineered for versatility with the ability to operate on either 100V line or 8 Ohms operation. Its power and flexibility make it suitable for any number of applications.

    Key Features

    • Driver Size
    • Warranty
      1 Year



      • Power Output: 30W RMS
      • Power Supply: 170-264Vac, 50Hz (IEC)
      • Amplifier: constructionClass D + transformer output
      • Audio Source: Internal USB/FM/BT player
      • Inputs: 1 x mic (6.3mm), 1 x line (2 x RCA), 1 x aux (3.5mm)
      • Line Output: 2 x RCA (mono)
      • Speaker Outputs: Screw terminals - 100V / 8 Ohms / Com
      • DC Power: 24Vdc screw terminals
      • 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


      • Frequency Response: 70Hz - 20kHz
      • Woofer: 165mm (6.5")
      • Tweeter: 38mm (1.5")
      • Power rms: 100V line - 20W
      • Power rms: 8 Ohms - 50W
      • Cutout: 193mm
      • Mounting Depth: 90mm
      • SPL @ 1W/1m: 87dB (±2dB)
      • Tappings: 2.5, 5, 10, 15, 20W & 8 Ohms
      • Dimensions: 100 x 227mm
      • Weight: 1.25kg
      • Power Max: 8 Ohms - 100W

    What You Get

      • 1 x Adastra UM30 100V Amplifier
      • 4 x Adastra CC5V 100V 5.25" Ceiling Speakers
      • 20m x 2 Core Speaker Cable
      • 1 x User Manual

    Payment & Security

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    Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

    Authorised Dealer

    K&B Audio are authorised dealers for Adastra. All sales come with a 1 Year manufacturers warranty and full technical support.

    Adastra UM30 100V Amplifier with Bluetooth & FM Radio Ceiling Speaker System inc. 4 x 5.25" Ceiling Speakers - K&B Audio

    Adastra UM30 100V Amplifier with Bluetooth & FM Radio Ceiling Speaker System inc. 4 x 5.25" Ceiling Speakers

    £325.80 £361.96









    Drive Type




    Noise Cancelling




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    TV Connection


    Smart Features


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    Mounting Depth


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    Driver Size







    1 Year
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