100v & Low Z

Adastra RM406 Mixer Amplifier with Bluetooth

SKU: 953.160

£393.35 + VAT    £472.02 incl. VAT

6 x 40w into 100v line or 4-8Ω low impedance 6-zone mixer amplifier with Bluetooth & media player

In stock

Radio FM
USB Type A
100V Line
Low Impedance 4 Ohms
Low Impedance 8 Ohms



Adastra RM406 6 x 40w 6-zone 100v line mixer amplifier with USB, SD, FM and Bluetooth media player

Zone amplifier with 6 x 40W outputs to 100V or 4/8 Ohms speakers, which can be monitored via a headphone output. 3 mic/line inputs, 1 aux input and an integral USB/SD/FM player and Bluetooth receiver can be matrix switched to any of the 6 zones independently. Mic 1 channel has a variable override and each microphone input has switchable phantom power. A master chime with volume can be used for paging calls and alerts. Designed for multi-room systems requiring different audio sources.

See the ‘User Manuals’ tab on the left of this page – as manufacturers are making instruction sheets and user manuals available for download only and your purchase may not include a printed version.

  • Integral USB/SD/FM audio player
  • Internal Bluetooth receiver
  • 100V or 4/8 Ohms operation
  • 6 independent output zones
  • 3 mic/line and 1 auxiliary input
  • Mic priority and chime functions
  • Monitor headphones output
  • Power supply 110-230Vac, 50/60Hz (IEC)
  • Output power 6 x 40W rms
  • Audio source USB/SD/FM/BT audio player
  • Inputs 3 x mic/line (XLR/jack), auxiliary 2 x RCA
  • Zone outputs: line 6 x RCA
  • Zone outputs: speaker 6 x terminal outputs 100V/8 Ohms/4 Ohms/com
  • Phantom power: +20V switchable to each XLR
  • Monitor outputs: 6.3mm stereo phones, 2 x RCA line
  • Mute: +24V relay contacts
  • THD: <0.76% @ 1kHz
  • Input impedance: 1k Ohms (mic/line)
  • Input sensitivity: -11dB (line), -46dB (mic)
  • SNR: 84dB (line), 82dB (mic)
  • Bluetooth version: 2.0
  • Frequency response: 100Hz – 24kHz
  • Dimensions: 433 x 89 x 403mm
  • Weight: 13.5kg

Additional information

Weight11 kg
Dimensions40.3 × 43.3 × 8.9 cm


Media Playback

Bluetooth, FM Radio, SD Card Slot, USB (Type A) Slot







Adastra was founded in 1949 and has earned a reputation for high quality public address sound products. Meeting the needs of the commercial PA sector for over 60 years the Adastra name is known for quality and value. Adastra is the choice for 100v line PA sound, zone paging PA and induction loop equipment. The Adastra range includes mixer & slave amplifiers, ceiling, cabinet & horn loudspeakers, desk paging & handheld microphones, equipment racks, cables, stands and accessories. Our professional and commercial sound products, wireless microphones and induction loops are carefully chosen for sale on our website by Sound Services – not everything from every manufacturer is there. Based on feedback, customer reviews and our own observations we list items that are popular, reliable and good value for money. If there are products not shown on our website that you feel we may be able to quote for, please just ask!

User Manuals

What's in the Box?

  • RM406 Zoning mixer-amplifier
  • Rack-mounting brackets
  • IEC mains lead(s)


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