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Designed to be the workhorse of the class,  SRP 400 has a rigid aluminium pressured die cast enclosure.  Compact it may seem, it delivers powerful and puchy sound to make sure you capture all the transients and dynaimics, details and balance in your mix.  




Many finds it compact enough to travel along with.  The custom waveguide gives much wider sweetspot  for you to work in even the toughest environment.  Gurantee the same clean and accurate sound anywhere you go. 



  • Rigid pressure die-cast aluminium enclosure with non-parallel edges : Clean, Fast, Neutral ; No Colouration, no building-up 
  • 4.5" Curv® cone woofer ; 1" silk dome tweeter
  • Torodial transformer power sulpply for transient response with low noise
  • 25 W + 25 W  Class AB Bi-amplifier 
  • XLR, TRS Inputs
  • High, Low shelving EQs


Sonodyne SRP 400 - 4.5" Active Studio Reference Monitor

SRP 350/400/500 Colours
SRP 20x Colours