Adastra RM240S - 240W 5-channel 100V mixer amplifier

  • £243.11
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A rack-mountable 5-channel mixer amplifier, tailored to commercial sound installations, that can either be used as a 100V line amplifier or a standard low-impedance amp. Versatile input options include XLR (with switchable phantom power), mic/line jack, and RCA line. Features an inbuilt FM radio tuner, front-mounted SD and USB ports, and Bluetooth connectivity, all controlled via an integrated media player for hassle-free playback. A switchable ‘voiceover’ feature automatically lowers the background music volume when a signal is detected via mic input 1 and rear panel 24V contacts can mute all except mic input 1 when triggered.

2U 19" rack mountable (rack ears supplied)
XLR input with switchable +20V phantom power – ideal for condenser microphones and paging microphones with chimes
2 x mic/line inputs, 2 x RCA line inputs, and 1 x RCA line output
Switchable ‘voiceover’ feature
Inbuilt media player with SD, USB and Bluetooth inputs and integrated FM radio tuner
100V line or 8 ohm speaker output
24V emergency mute contacts
Option for mains or 24Vdc power
Bluetooth with programmable ID


Mains power: 110/240Vac, 50/60Hz (IEC)
DC power: 24Vdc (screw terminals)
Inputs: Mic XLR, 2 x mic/line jack, 2 x RCA line
Input sensitivity: mic 1 (balanced) -53dBV
Input impedance: mic 15k Ohms
Input sensitivity: line (unbalanced)-15dBV (-18.5dBV line 5)
Input impedance: inputs 2-5 1k Ohms
Line output: RCA
Controls: Mic1, mic/line2+3, line4+5, bass, treble, master volume
Equalizer: bass 100Hz ±10dB
Equalizer: treble 10kHz ±10dB
Rear panel switches: Phantom, Vox, Mic/Line (2 + 3)
Phantom power: +20V (mic 1 input)
Audio source: USB/SD player, FM tuner and Bluetooth receiver
Emergency control: 24V contacts - mute all except Mic.1 when triggered
Bluetooth version: 5.0
THD: <1.0%
Power output: 240Wrms
Speaker outputs: 4 x 100V zone / 8 Ohms / COM terminals
Speaker switching: Zones 1, 2, 3, 4, All
Weight: 9.62kg
Dimensions: 433 x 320 x 89mm