JBL ProSilent a300 is a new extremely quiet air pump generation for aquaria with a air output of 300 litres per hour. The pump operates at an extremely low noise level due to a completely new construction design incorporating a silencer. JBL ProSilent air pumps are scarcely audible.
- Paul J. wrote about JBL ProSilent a300 in 2017:
After 1 year of use: Good quality pump, but not as silent as promised. After a few months in use, on medium workload, it produce the same(or even more) noise as most pumps.
Liselott P. wrote about JBL ProSilent a300 in 2016:
This works great with me, had it now for a few months and am more than satisfied. Good flow and quieter than my previous air pumps. Like that it is standing still - some other "vibrate off" but this is still :)