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Adastra UA30 Compact 5-Channel 100V Mixer-Amplifier

£12999
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Description

The Adastra UA30 is a compact 100V line mixer-amplifier built into a half width 1U housing, giving you a five-input mixer and power amp in one unit. It handles three switchable mic/line inputs, an RCA line input and a 3.5mm aux input, each with its own front panel volume control alongside a master output control. The mono output feeds either a 100V line system or an 8 ohm speaker load, connected through a removable screw terminal (Euroblock) connector on the rear panel. It is a practical choice for small to medium PA installations such as shops, offices and background music setups.

Channel one includes switchable +20V phantom power, available via XLR or the rear terminals, so you can run condenser microphones without a separate supply. The amplifier uses a Class D output stage with a transformer for the 100V line, and quoted total harmonic distortion (THD) sits below 0.4% at 1kHz. Frequency response runs from 100Hz to 18kHz, with input sensitivity of -10dB on line and -45dB on mic, and a signal to noise ratio (SNR) of 80dB line and 75dB mic. Input impedance on the mic/line channels is 1k ohms.

For safety systems, the UA30 has 24V relay mute contacts that let a fire alarm interrupt the audio when triggered. Adastra supplies rack-mounting hardware in the box, and it can be configured to fit two units side by side in a rack, or to mount a single unit against a wall or under a worktop. The larger 120W and 240W models in the UA range add a global 2-band EQ, while the UA30 keeps things simple for smaller jobs where a straightforward mixer amp is all you need.

Specification
Output power : rms 30W
Weight 2.35KG
Dimensions 249mm x 210mm x 44mm
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)
Phantom power +20V CH1 (XLR or rear terminals)
Line output 2 x RCA (mono)
Speaker output Euroblock terminals: 100V / 8 Ohm or 2 Ohm / Com
Mute 24V relay contacts
THD <0.4% @ 1kHz
Input impedance 1k Ohm (mic/line)
Input sensitivity -10dB (line), -45dB (mic)
SNR 80dB (line), 75dB (mic)
Frequency response 100Hz - 18kHz
Downloads

Product Manual

Frequently Asked

Can the UA30 drive 100V line speakers?

Yes. The mono output can run either a 100V line system or an 8 ohm speaker load, connected through the removable Euroblock screw terminal on the rear panel.

How many inputs does it have?

Five. There are three switchable mic/line inputs, one RCA line input and one 3.5mm aux input, each with its own front panel volume control plus a master output control.

Does it support phantom power for condenser mics?

Channel one has switchable +20V phantom power, available via XLR or the rear terminals, so you can use condenser microphones without an external supply.

Can I connect it to a fire alarm system?

Yes. It includes 24V relay mute contacts that let a fire alarm signal interrupt the audio output when triggered.

How is the UA30 mounted?

It ships with rack-mounting hardware that fits two units side by side in a rack, or mounts a single unit against a wall or under a worktop.

Does the UA30 have tone controls?

No. The global 2-band EQ is fitted on the larger 120W and 240W models in the range. The UA30 keeps the controls simple for smaller installations.

Shipping & Returns

Delivery UK delivery is £14.99, and delivery is free on all orders of £99 or more, in the UK and internationally.

Returns If you change your mind, you have 14 days from delivery to tell us, and a further 14 days to send the goods back. Return postage for a change-of-mind return is paid by you. Change-of-mind returns are subject to an inspection and handling deduction. See our full returns policy.

To arrange a return, call us on 020 8149 5199 or use our contact page.

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    Description

    The Adastra UA30 is a compact 100V line mixer-amplifier built into a half width 1U housing, giving you a five-input mixer and power amp in one unit. It handles three switchable mic/line inputs, an RCA line input and a 3.5mm aux input, each with its own front panel volume control alongside a master output control. The mono output feeds either a 100V line system or an 8 ohm speaker load, connected through a removable screw terminal (Euroblock) connector on the rear panel. It is a practical choice for small to medium PA installations such as shops, offices and background music setups.

    Channel one includes switchable +20V phantom power, available via XLR or the rear terminals, so you can run condenser microphones without a separate supply. The amplifier uses a Class D output stage with a transformer for the 100V line, and quoted total harmonic distortion (THD) sits below 0.4% at 1kHz. Frequency response runs from 100Hz to 18kHz, with input sensitivity of -10dB on line and -45dB on mic, and a signal to noise ratio (SNR) of 80dB line and 75dB mic. Input impedance on the mic/line channels is 1k ohms.

    For safety systems, the UA30 has 24V relay mute contacts that let a fire alarm interrupt the audio when triggered. Adastra supplies rack-mounting hardware in the box, and it can be configured to fit two units side by side in a rack, or to mount a single unit against a wall or under a worktop. The larger 120W and 240W models in the UA range add a global 2-band EQ, while the UA30 keeps things simple for smaller jobs where a straightforward mixer amp is all you need.

    Specification
    Output power : rms 30W
    Weight 2.35KG
    Dimensions 249mm x 210mm x 44mm
    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)
    Phantom power +20V CH1 (XLR or rear terminals)
    Line output 2 x RCA (mono)
    Speaker output Euroblock terminals: 100V / 8 Ohm or 2 Ohm / Com
    Mute 24V relay contacts
    THD <0.4% @ 1kHz
    Input impedance 1k Ohm (mic/line)
    Input sensitivity -10dB (line), -45dB (mic)
    SNR 80dB (line), 75dB (mic)
    Frequency response 100Hz - 18kHz
    Downloads

    Product Manual

    Frequently Asked

    Can the UA30 drive 100V line speakers?

    Yes. The mono output can run either a 100V line system or an 8 ohm speaker load, connected through the removable Euroblock screw terminal on the rear panel.

    How many inputs does it have?

    Five. There are three switchable mic/line inputs, one RCA line input and one 3.5mm aux input, each with its own front panel volume control plus a master output control.

    Does it support phantom power for condenser mics?

    Channel one has switchable +20V phantom power, available via XLR or the rear terminals, so you can use condenser microphones without an external supply.

    Can I connect it to a fire alarm system?

    Yes. It includes 24V relay mute contacts that let a fire alarm signal interrupt the audio output when triggered.

    How is the UA30 mounted?

    It ships with rack-mounting hardware that fits two units side by side in a rack, or mounts a single unit against a wall or under a worktop.

    Does the UA30 have tone controls?

    No. The global 2-band EQ is fitted on the larger 120W and 240W models in the range. The UA30 keeps the controls simple for smaller installations.

    Shipping & Returns

    Delivery UK delivery is £14.99, and delivery is free on all orders of £99 or more, in the UK and internationally.

    Returns If you change your mind, you have 14 days from delivery to tell us, and a further 14 days to send the goods back. Return postage for a change-of-mind return is paid by you. Change-of-mind returns are subject to an inspection and handling deduction. See our full returns policy.

    To arrange a return, call us on 020 8149 5199 or use our contact page.