IMR Acoustics R1 Zenith: A proper upgrade IMR Acoustics is a UK based manufacturer and founded by Bob, both the owner and the engineer. Their first model was the R1 which was quite successful for its cost-effective performance, as well as featuring a world-first ‘open and close’ vent system with changeable filters. Now IMR announced their second product, the R1 Zenith. It’s meant to be the most ideal version of the R1, achieving the peak performance as well as supplementing … Continue reading IMR Acoustics R1 Zenith Review: A proper upgrade