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Chiayo COACH


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Product Overview

Coach, 40 watt, Class D Personal Portable PA system, jam packed with features you won't believe from a portable PA system of this size! Starting from just $469.00

You can option your Coach with any or all of the following options (use our drop down selection menu to the right of your screen for exact pricing on your option choices) -

  • None or one UHF wireless receiver
  • An MP3 USB 2.0 port with LCD readout screen for MP3 music file playback

Also choose from a huge range of accessories including a stand to elevate the Coach unit for even greater coverage, shoulder style carry bags for the speaker stand and more!

Every Coach unit comes shipped standard with a shoulder carry bag with pockets for accessories and transmitters and a liftable front panel so you can still use the Coach over your shoulder facing either forwards (for addressing a group) or backwards (for guided mobile tour groups) inside the carry bag!

Chiayo - Australia's favourite portable PA systems for almost 30 years and still leading with technology!


The ACMA's Channel Finder

From 1 January 2015, wireless microphones must not be used in the 694 – 820 MHz frequency range. The main alternative frequency ranges will be 520 – 694 MHz and 1790 – 1800 MHz, with some other frequencies also available.

If you choose to use the spectrum in the 520 – 694 MHz range, you must not cause interference to television and radio services who also use this spectrum.

The ACMA's regional fact sheets have high-level information about the changes to wireless microphones.

The ACMA’s Wireless Microphone Channel Finder

Find out what spectrum is available in 520 – 694 MHz for wireless microphones in your area by using the ACMA's online channel finder.

Simply type the street address of where you intend to use your wireless microphone into the channel finder and it will tell you what spectrum is available in your area.




  • Rechargeable lithium battery eliminates all cables so you can take it anywhere!
  • Smart charging circuit with LED indicator
  • High efficiency Class D amplifier produces 25W RMS audio output, maximum music output 40W
  • Speaker system: 4" full range
  • Selection of wireless microphone system: UHF (16 CH. selectable) or UHF (fixed frequency)
  • Anti-interference Pilotone circuitry provides superior wireless reception
  • Audio input: Mic in, Aux in, USB
  • Audio output: Aux out
  • Able to read digital music files via the USB jack with LCD displaying track information. Additional remote control offers convenient operation
  • Two alarm sounds for emergency broadcasting
  • Φ3.5mm stereo Aux In/Aux Out connectors
  • Can be worn over the shoulder and optional shoulder bag SB-41A
  • Optional tripod stand ST-30
  • Suitable for outdoor/indoor applications such as lectures, trade fairs, tours and election events, etc.



  • Output power: 40W, 25W(RMS) 4Ω load (class-D)
  • Speaker system: 4" full range
  • Audio input: Mic in, Aux in
  • Audio output: Aux out
  • T.H.D: < 0.5%
  • Freq. response: 50Hz-20KHz ± 3dB
  • Antenna: Built-in
  • Power supply: 100-240V AC / 18-20V DC, 2.5A
  • Battery type: Lithium
  • Battery spec: 16.8V, 2.6A
  • Battery Q'ty: 1
  • Operating time: 5-6 hrs in music, 10-12 hrs in speech
  • Charging time: About 4 hrs
  • Dimension (mm): 156(H) x 156(W) x 205(D)
  • Weight (kg): 1.6
  • Receiver module: SDR-400m, SDR-401m
  • Music player module: DP-400M
  • Patent: Taiwan, China, USA, Germany
  • Approval: CE, RoHS



** Note: The above specifications are subject to change without prior notice.

Product Downloads

  • COACH Battery Care Sheet PDF 0.0 MB
  • COACH User Manual PDF 0.4 MB
  • COACH Data Sheet PDF 0.1 MB
  • COACH NAS Chiayo Catalogue PDF 6.1 MB
  • COACH PAs Comparison Chart PDF 0.7 MB


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*Prices are in AUD, include GST and are subject to change. Please call National Audio for pricing and availability on the COACH.