Adastra UA120 Compact 120W Mixer Amplifier 100V & 2 Ohm
The Adastra UA120 is a Compact 120W 1U Half-Rack Mixer Amplifier delivering 100V line and 2 Ohm operation with a built-in 5-channel mixer.
The Adastra UA120 has been designed as a versatile, space-efficient mixer amplifier for small to medium PA installations across offices, retail outlets, hospitality venues, educational facilities and other commercial environments. Its half-rack 1U chassis - measuring just 350 x 210 x 44mm - makes it one of the most compact 120W mixer amplifiers available, opening up a wide range of installation possibilities that a full-width unit simply cannot accommodate. Whether mounted below a counter, under a desk, fitted into a half-rack enclosure or rack-mounted alongside a second UA120 using the supplied rack-mounting hardware, the UA120 delivers full-featured mixer amplifier performance without demanding valuable space.
Versatile Inputs for Any Source
Despite its compact dimensions, the UA120 features a well-specified 5-channel input mixer to accommodate a wide variety of source connections. Three switchable mic/line inputs - one via a combo XLR/jack and two via 6.3mm jack - handle microphones and line-level sources with individual front panel volume controls for precise level management. An RCA line input and a 3.5mm aux input provide convenient connectivity for background music sources, streaming devices and other consumer audio equipment. A global 2-band EQ allows tonal adjustment of the overall output to suit the acoustic characteristics of the installation environment, whilst a master output control governs the overall system level.
100V Line & Low Impedance Operation
The UA120 supports both 100V line and 2 Ohm low impedance speaker operation via Euroblock screw terminals on the rear panel, making it compatible with a wide range of existing and new speaker installations. This dual-mode flexibility makes the UA120 an equally capable choice for distributed 100V line ceiling speaker systems and direct low impedance speaker setups — providing genuine versatility across a broad range of installation types and system configurations.
Professional Installation Features
The UA120 is equipped with a number of features specifically aimed at professional installation applications. Switchable +20V phantom power on channel 1 (available via XLR or rear terminals) accommodates condenser microphones and desktop paging microphones without the need for a separate power supply. A 24V fire alarm mute contact allows the amplifier to be integrated into a building's fire alarm system for automatic audio muting during an emergency — an important compliance feature for many commercial installations. Two RCA mono line outputs on the rear panel allow the signal to be looped through to additional amplifiers or zones, and the Class D amplifier with transformer output ensures efficient, reliable operation with low heat generation.
Adastra UA120 Key Features:
- 120W RMS Class D Amplifier: Efficient Class D amplification with transformer output for reliable, low-heat continuous operation.
- Half-Rack 1U Compact Chassis: Minimal footprint ideal for under-counter, under-desk, half-rack or dual rack-mount installations where space is at a premium.
- 5-Channel Input Mixer: 3 x switchable mic/line inputs (combo XLR + 2 x 6.3mm), 1 x RCA line input and 1 x 3.5mm aux input with individual channel volume controls.
- 100V Line & 2 Ohm Operation: Switchable between 100V line and 2 Ohm low impedance speaker outputs via rear Euroblock terminals for maximum system compatibility.
- Global 2-Band EQ: Overall tonal control to suit different room acoustics and installation environments.
- +20V Phantom Power on CH1: Switchable phantom power via XLR or rear terminals for condenser microphones and desktop paging microphones.
- 24V Fire Alarm Mute Contacts: Relay mute contacts for integration with building fire alarm systems for automatic audio muting in an emergency.
- 2 x RCA Mono Line Outputs: Loop-through outputs for connection to additional amplifiers or zones.
- Supplied with Rack-Mount Hardware: Includes hardware for rack-mounting two UA120 units side by side in a standard 19" rack enclosure, or for single unit wall or worktop mounting.
- Removable Euroblock Speaker Connector: Rear panel Euroblock terminals for clean, secure and professional speaker wiring.
Adastra - Commercial Amplifiers & Speakers
View our shipping and delivery information below. All prices include VAT.
Important notice for non-UK orders: Any order being shipping outside of the UK will incur an import tax. See below for more information.
Cut-off Times
Orders must be placed before 3:30pm to guarantee same-day dispatch. Any orders placed after this time are not guaranteed to be shipped the same day, and are more likely to be shipped the next working day.
To guarantee Saturday Delivery, orders must ideally be placed before 2pm.
We operate during office hours, Mon-Fri, 9am - 5pm, and are closed during the weekend.
Orders placed over the weekend or Friday after cut-off will be processed and shipped the following Monday (or Tuesday during bank holidays).
Mainland UK Delivery Charges
Note: Next-day services are classed as working days (Mon-Fri) and do not include weekends. Please choose Saturday delivery if you require the item over the weekend.
Please also note orders with a high number of boxes may be subject to an additional charge.
All delivery options will be available at the checkout stage. Please ensure you add a mobile number to your order for tracking information.
Offshore & International
We ship to Scottish Highlands, Islands, Ireland and the EU. Please see the table below for base prices. Please note that these prices are subject to change based on the number of boxes.
The following postcodes fall under 'Highlands & Islands', and are subject to the above rates/lead time.
- Scottish Highlands: FK17-21, IV1-39, IV52-54, IV63, KW1-14, PA21-40 (excluding PA38), PH19-26, PH30-41, PH49-50
- Scottish Islands: HS1-9, IV40-51, IV55-56, KA27-28, KW15-17, PA20, PA38, PA41-49, PA60-78, PH42-44, ZE1-3
If a UK Mainland next-day service is selected at checkout, please be aware that it won't be sent on that service.
If you require a next-day service to Northern Ireland and the highlands, get in touch so we can assist further.
EU Import Tax
Any goods shipped outside of the UK, over a certain value, will incur an import tax. The cost and rate will depend on the country and the order value.
This is a legal requirement and MUST be paid prior to delivery in order to receive your goods. You will be contacted by the courier once the order is dispatched to pay the fee.
Failure to pay import tax when applicable will result in the order being shipped back to Audio Volt. Any returned goods sent back to us due to non-payment of import tax are NOT ELIGIBLE for a refund on the shipping charge.
You can obtain an import duty estimate here.
Delivery Notes
On delivery, you must inspect the goods carefully for damage as Audio Volt is unable to accept responsibility for damage in transit, shortage of delivery or loss of products unless the customer advises Audio Volt of such within three working days from the date of delivery.
60 Day Returns Policy
We ask that you follow these guidelines to help us process your return as quickly and efficiently as possible:
- Please keep your order reference to hand. This confirms your original order and gives us the necessary details to authorise the product's return.
- Contact our Customer Services Team on 02476 369890 (or email info@audiovolt.co.uk). We will then send you an RMA number and a returns form, which needs to be completed and sent back with the returned item(s).
- If the order has been unpacked, re-package it to ensure that it is being returned in its original condition. Please make sure all items relating to the product are returned, including manuals and cables.
- When returning an item, please obtain a proof of postage receipt from the courier.
Returned items must be mailed within 10 days of when the RMA number has been issued. Items received with a post date 30 days after your requested return will NOT be eligible for refund.
Please note: our returns policy is quite straightforward, but there are a number of conditions that we ask our customers to comply with before applying:
- It is your responsibility to request a return. If you don't tell us you want to make a return, we don't know. Once you do tell us, we will do everything we can to action it.
- If you have not requested a return within 60 days of receiving an order, we will assume that you are intending to keep it, and we will not authorise a return.
- We always refund the payment according to how the original purchase was made and aim to do so within 72 hours of the return being received by us.
- Returned goods are liable for a restocking fee of 15% towards handling and repackaging if the order is not returned in its original, unopened packaging. This charge will be subject to our inspection of the returned goods.
- Delivery charges will not be refunded unless the delivered goods are faulty.
- Replacement products are dispatched immediately after the returned goods have been received and accepted by Audio Volt.
- Items that develop a fault within 30 days of delivery are eligible for a replacement or a refund. Delivery costs are also reimbursed for faulty items. Please contact our Customer Services Team on 02476 369890 if you believe your item has developed a fault.
Finally, please remember that notifying us of your intention to apply for a return, saving the delivery paperwork and keeping the order in its original packaging will help both you and Audio Volt to process the return quickly.
Any Questions?
If you have any questions about our returns policy, please telephone us on 02476 369890 or email us at info@audiovolt.co.uk.
We operate during office hours, Mon-Fri, 9am - 5pm, and are closed during the weekend.
