I bought 2 pieces to put in 2 different cars mainly because of their amazingly small size (they are slightly larger than a pack of 25 cigarettes). At first, I was very satisfied with their unexpected power. However, after a few days, I noticed that they produce a very annoying noise when the music is turned off. What is also completely absurd is that in both cars - a 2019 Mercedes Vito and a 2017 Opel Astra K - apart from the noise, the radio receivers of the cars became very weak, resulting in being able to find very few stations across the FM range. I am already looking to find 4-channel amplifiers to replace them.

Convenient amplifier in terms of size, but I hear noise (during quiet moments or transitioning from one music track to the next) and I suspect it's due to its fan.

Very small in size, it fits almost anywhere. Excellent sound quality and very satisfying bass .. perfect for an upgrade!