Disclaimer: the kind folks of ADV.SOUND/ADVANCE provided me a copy of the M4 in exchange for my honest opinion, expressed through a detailed review, provided a copy of the M4. I am in no way affiliated with the company. Photos from: https://www.adv-sound.com/collections/all-collection/products/m4   About me: I am a young music-lover and former music producer from a little place called Bergen, Norway. My belief is that good sound should be accessible for everyone and anyone, which is why this review is not written from an audiophile perspective...

Disclaimer: The kind folks over at RHA provided me a sample of this unit. This, however, will not impact the opinions or the verdict in any way. Shots from the official RHA website.     About me: I am a young music-lover and former music producer from a little place called Bergen, Norway. My belief is that good sound should be accessible for everyone and anyone, which is why this review is not written from an audiophile perspective. As for my sound preferences, I tend to go back and forth between a v-shaped sound and a somewhat bassy one, with a...