Skip to content

Adastra SA120 120W Lockable Wall-Mount PA Amplifier with Bluetooth & Mic

by Adastra
SKU 953.149
Original price £229.00 (inc. VAT) - Original price £229.00 (inc. VAT)
Original price £229.00 (inc. VAT)
£229.00 (inc. VAT)
£229.00 (inc. VAT) - £229.00 (inc. VAT)
Current price £229.00 (inc. VAT)

Adastra SA120 – A 120W Secure Wall-Mount Amplifier Built for Public Spaces, Outbuildings, and Remote PA Systems.

Designed for Secure, Unattended Audio Installations

The Adastra SA120 is a wall-mounted 120W public address amplifier built specifically for environments that demand secure, tamper-resistant operation. Housed in a steel cabinet with a lockable front panel, it’s ideal for permanent installation in public buildings, scout huts, outbuildings, village halls, sports pavilions, and remote structures such as storage units, paintball arenas, or water sports centres — anywhere where a reliable PA or background music system is needed but may not be regularly attended.

A Simple All-in-One Solution for PA, Music & Announcements

The SA120 combines multiple audio functions in a compact wall-mount design. It includes a built-in media player for USB/SD playback, FM radio, and Bluetooth streaming, removing the need for separate source equipment. It’s perfect for playing background music in community buildings or triggering pre-recorded safety messages in remote facilities.

With a UHF wireless handheld microphone included and two additional mic inputs with phantom power, it’s also fully equipped for live announcements. Mic priority settings ensure spoken messages clearly override any ongoing music or audio, making the SA120 suitable for both general public address and emergency situations.

Flexible Inputs, Reliable Output

In addition to its onboard media player and wireless microphone, the SA120 includes standard Aux inputs via RCA and 3.5mm jack for connecting laptops, CD players or other external devices. It delivers 120W of power and supports both 100V line speaker systems and 8-ohm speakers, allowing integration into existing installs or new systems with ease.

Ideal for Use in Public and Semi-Public Environments

What makes the SA120 stand out is its suitability for installations where access to the amplifier needs to be restricted. Schools, sports grounds, community centres, council buildings, warehouses, and rural outbuildings often require sound reinforcement, but without the risk of unauthorised tampering. The SA120 addresses that directly — offering everything you need in one self-contained, secure unit.

Adastra SA120 Key Features:

  • 120W Power Output: Drives both 100V line and low-impedance 8-ohm speakers
  • Lockable Wall-Mount Housing: Prevents tampering and protects controls in unattended spaces
  • Built-In Media Player: USB, SD card and FM radio playback
  • Bluetooth Connectivity: Stream audio wirelessly from phones, tablets or laptops
  • Wireless UHF Handheld Microphone: Ideal for announcements or live voice applications
  • Two Additional Mic Inputs: XLR/jack combo with 48V phantom power for condenser microphones
  • Mic Priority Function: Automatically mutes other audio sources when a mic is in use
  • Aux Inputs Available: RCA and 3.5mm jack inputs for external audio devices
  • Remote Control Included: Control playback and input selection from a distance
  • Ideal for Remote or Public Sites: Perfect for scout huts, halls, sports pavilions, schools and more

Manuals & Data Sheets:

Adastra SA-240 User Manual

Specifications:

  • Weight: 8.70kg
  • Fuse: F1AL (20x5mm)
  • Output power : rms: 120W
  • Power supply: 170-264Vac, 50Hz (IEC)
  • Amplifier : construction: Class-D + output transformer
  • Phantom power: +20V switchable to each XLR input
  • Input impedance: Mic: 600 Ohms / Line: 10k Ohms
  • Input sensitivity: Mic: -42dB / Line: -10dB
  • Frequency response : mic: 85Hz-22kHz
  • Frequency response : line: Line 1+2: 80Hz-24kHz, Line 3+4: 85Hz-24kHz
  • SNR: Mic: 66dB / Line: 76dB
  • THD: <0.4% @ 1kHz
  • Speaker outputs: 8 Ohm / Com / Com / 100V
  • Music source: USB/SD player, FM tuner, Bluetooth
  • Mic/line inputs: 2 x combo XLR/jack
  • Line inputs: RCA (Aux 1), RCA or 3.5mm jack (Aux 2)
  • Line output: XLR male connector
  • Equalization: Bass + Treble each channel
  • Bluetooth version: 5.0
  • Carrier frequency: 864.5MHz
  • Batteries : handheld transmitter: 2 x AA (alkaline)
  • Wireless range: 50m (max)
  • Dimensions: 375 x 345 x 160mm

Adastra - Commercial Amplifiers & Speakers

Adastra has been providing audio equipment since 1949, with a focus has always on practical, affordable, and installer-friendly design.

Their range covers the full scope of what a commercial installation demands, from zoned background music and public address through to noise pollution control and induction loop systems. Hardware includes speakers, amplifiers, mixers, cable and everything inbetween.

Adastra sits naturally alongside what we do at Audio Volt. Their products are built for real-world commercial environments, priced accessibly, and backed by decades of industry presence, making them a solid choice whether you are specifying a simple background system or something more involved.

View the Adastra range here

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

Standard delivery
Standard delivery
Orders under £99
2-3 working days (Mon-Fri) £3.99
Standard delivery
Orders £99 and over
2-3 working days (Mon-Fri) Free
Express delivery
Next-day delivery
All orders
Next working day (Mon-Fri) £9.95
Next-day pre-12
All orders
Next working day, by 12pm (Mon-Fri) £14.99
Next-day pre-10:30
All orders
Next working day, by 10:30am (Mon-Fri) £34.99
Saturday delivery
All orders
Saturday £19.99

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.

UK offshore & remote
Scottish Highlands & Islands
Standard
2-3 days (Mon-Fri) £3.99 under £99
Scottish Highlands & Islands
Next-day
Next working day (Mon-Fri) From £59.99
Northern Ireland
Standard
2-3 days (Mon-Fri) £3.99 under £99
Northern Ireland
Next-day
Next working day (Mon-Fri) From £59.99
Isle of Man
2-3 days (Mon-Fri) From £29.99
Channel Islands
Jersey & Guernsey
2-3 days (Mon-Fri) From £29.99
International
Republic of Ireland
2-3 days (Mon-Fri) From £29.99
EU
Variable based on country From £29.99

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:

  1. Please keep your order reference to hand. This confirms your original order and gives us the necessary details to authorise the product's return.
  2. 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).
  3. 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.
  4. 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:

  1. 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.
  2. 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.
  3. 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.
  4. 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.
  5. Delivery charges will not be refunded unless the delivered goods are faulty.
  6. Replacement products are dispatched immediately after the returned goods have been received and accepted by Audio Volt.
  7. 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.

}
Sale now on at Audio Volt
SPRING SALE

Lithe Audio Sale Now On

Pay in 3 payments with Klarna at Audio Volt
PAY IN 3 WITH Klarna

18+, T&C apply, Credit subject to status

Free UK Delivery on orders over £79.00 at Audio Volt
FREE UK DELIVERY

On orders over £99.00

Fast next day delivery available at Audio Volt
FAST DELIVERY AVAILABLE

Next day tracked £9.95

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare