Adastra RM240S

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  • Adastra RM240S
  • Adastra RM240S
  • Adastra RM240S
  • Adastra RM240S


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 4-16 ohm speaker output
  • 24V emergency mute contacts
  • Option for mains or 24Vdc power
  • Editable Bluetooth ID for unique pairing
  • Power output: 240Wrms
  • Speaker outputs: 4x 100V Zone/ 8 Ohms / COM terminals
  • Inputs Mic XLR, 2 x mic/line jack, 2 x RCA line
  • Input sensitivity : mic 1 (balanced) -53dBV
  • Input impedance : mic 1 5k 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 2.0
  • THD <1.0 percent
  • Mains power 110/240Vac, 50/60Hz (IEC)
  • Speaker Swithcing: Zones 1, 2, 3, 4, All
  • DC power 24Vdc (screw terminals)
  • Weight: 9.62kg
  • Dimensions: 433 x 320 x 89mm
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