Rens Heijnis                             

                          custom-built audio equipment                                          professional audio equipment


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December 2015: Light weight LI-ION battery powered pre-amplifier MPB-502 available in 4 channel version.
                               Opinion on the Sonodore MPM-91
November 2015: Sonodore newsletter: News 2015
July 2015: On request, the MPM-81 is also available with a copy of the AKG CK12 capsule  MPM-81
May 2015: PSB402 available with light weight LI-ION batteries (suitable for LDM-54 also)  PSB-402
April 2015: Introduction general-purpose multi pattern microphone MPM-91
February 2015: Opinion on the Sonodore MPM-81
                            Audio sample MPM-81 
January 2015: MPM-71 no longer available and Audio sample RCM-402
December 2014: Audio sample LDM-54
September 2014: Webpage for B&K /DPA microphones and Schoeps microphones
May 2014: Retrofitting of microphones now also possible with a tube amplifier Microphones.
April 2014: MPM-71 and MPM-81 available in a tube version.
January 2014: Introduction spot microphone MPM-81
May 2013: Many battery powered equipment available with the lightweight Li-Ion batteries.
April 2013: New address, telephone number and E-mail address contact.