Adastra 100V Mixer Amplifier With 4 Zone Paging - 240W

Adastra SKU: 953.144UK
Adastra 100V Mixer Amplifier With 4 Zone Paging - 240W - Tech4
Adastra 100V Mixer Amplifier With 4 Zone Paging - 240W - Tech4
Adastra 100V Mixer Amplifier With 4 Zone Paging - 240W - Tech4
Adastra 100V Mixer Amplifier With 4 Zone Paging - 240W - Tech4

Adastra 100V Mixer Amplifier With 4 Zone Paging - 240W

Adastra SKU: 953.144UK
Regular price £429.00
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240W mixer-amplifier with 3 mic/line inputs, 1 aux input and a built-in media player. Connections for mic/line inputs are jack or XLR and channel 1 input has a variable mute for priority override. 24V contacts can be connected to a fire alarm panel for emergency evacuation if required. The media section can provide playback from Bluetooth, USB/SD media or an FM tuner. Output terminals are provided for 4 zones which share the output of the 240W amplifier, governed by 4 individual rotary volume switches on the front panel. RJ45 inputs on the rear panel allow connection for up to two CS4 call stations to enable paging to individual or all zones. The RM244V offers versatile 4-zone control without the expense of a quad amplifier and can even be operated as the front end to an expanded public address system.


Supplied with 19" rack-mount ears (2U)
Send/return loop for connection to audio processors or amplifiers
Switchable +20V phantom power
Compatible with CS4 call stations (953.146UK)
4 individual volume attenuators
Built-in USB/SD player with Bluetooth and FM tuner


Power supply - 110/230Vac, 50/60Hz (IEC)
Inputs - 3 x mic/line (jack/XLR), 1 x aux (RCA)
Input sensitivity : mic - -47dBV
Input sensitivity : line - -10dBV
Input impedance : mic - 5k Ohms
Input impedance : line - 1k Ohms
Line output - RCA
Sends : returns - Pre out, amp in (RCA)
Channel controls - Ch1, Ch2, Ch3, Media and Aux volume
Output controls - Master volume, 4 x zone volumes & mutes
Equaliser : bass - 100Hz ±10dB
Equaliser : treble - 10kHz ±10dB
Phantom power - +20V (switchable inputs 1-3)
Audio source - USB/SD player, FM tuner and Bluetooth receiver
Bluetooth version - 2.0
THD +N - <2% @ 1kHz (rated power)
Paging station inputs - 2 x RJ45 (for optional RM-4B paging stations)
Fire alarm contacts - 24V screw terminals
Protection - Short circuit, overload, overheat
Speaker : outputs - 4 x 100V (modular terminal block)
Dimensions - 430 x 315 x 89mm
Weight - 10.4kg
Output power rms - 240W (shared

We know you can't wait to start enjoying your new speaker system, so we only use the quickest and most reliable couriers.

We keep plenty of stock so most of orders are delivered the next day!

Delivery Costs

 We've decided to keep this really simple.

If your order is over £89 then you will get FREE next day courier. Most instances we will dispatch the same day as well, however free deliveries may take 1 extra day at most.

We also offer a range of other delivery options for Saturdays and AM deliveries.

Some additional costs apply to Ireland, Europe & Scottish Highlands. Our business isn't about making money on deliveries, but some areas do cost us a bit more than others so we have to pass that on to keep the overall delivery costs as low as possible. 


Mainland UK

FREE Delivery (2-3 Working Days) £0.00
Standard Delivery (2-3 Working Days) £4.99
Express Delivery (1-2 Working Days) £6.99



 Standard Delivery (3-4 Working Days) £14.99

Order Processing

Most orders received before 2pm are processed and dispatched the same day provided the items are in stock. Orders are processed Monday - Friday excluding weekends and public holidays. A notice will be placed on the website if orders will not be processed for any reason outside of the aforementioned days.

Once dispatched your item will usually be with you next day! Some customers have ordered at 2pm and received it by 10am the next day!. All times stated are for guidance only, we endeavour to provide the most efficient service as possible but please ensure that you order in good time to avoid problems caused by delays in dispatch. If you are ordering a speaker system to be installed by an electrician, we reccomend that you give yourself an extra day before booking your electrician in.

If a product is delayed or out of stock we will contact you by telephone and/or e-mail in the earliest instance to discuss your order. We do our best to ensure that our stock levels are accurate, but on the odd occassion if the item you have purchased is out of stock we will contact you ASAP to discuss alternatives or to advise of the lead time.


Couriers Used

We only use the best, and that's decided by our customers. The majority of our orders go via Interlink, UK Mail, DPD. Some lower value items such as spare parts and remote controls go Royal Mail. 

Free delivery is normally via next day courier as well. (We don't guarantee you'll receive free delivery items the next day, but 99% of the time you will!)

Keeping You Updated

Once you place an order with us you will receive a notification e-mail outlining your order and details. We then get busy picking and carefully packing your item. Once we've got it all ready to go you'll receive another update to tell you it's been dispatched with a tracking number so you can keep an eye on it!

99% of our customers receive their items sooner than they expected. We pride ourselves on super-fast deliveries and do everything we can to deliver on that promise.

Any stock issues, or other delivery issues will always result in a quick phone call and e-mail to keep you updated. However we have carefully picked our products so we rarely have stock issues