Review on Elevate Your Studio Recording with Electro-Voice 309A Suspension Shock Mount for RE20, RE27N/D and RE320 Microphones by Brian Micheals

At first I was skeptical about how good the noise insulation would be with this shock absorber. I recently bought another brand of shock mount for another dynamic mic and was very disappointed with the result. Fans from other devices on the tabletop were still telegraphing through my bay and being picked up by the mic. I've been using my EV RE-20 for a while with no jarring and I've been getting noticeable noise through the bar. My 309A shock arrived this afternoon and I installed it straight away. The difference is striking. Vibrations from other devices are completely gone! The cooling fans on everything were working flat out and not telegraphing through the RE-20 at all! I could only hear myself breathing in the background as I poured the RE-20. Consider me a very satisfied customer! The EV RE-20 is my go-to mic for vocal work, and the 309A is an integral part of the RE-20.