Hello,
At first RAINBOW I does not know and have never understood it spoken.
The good marks(brands) for the speakers very wide-spread to us are:
- Focal
- Macrom
- MTX
- MB Quart
- DLS
- Xtant, Brax & Helix
We can find Diamond, Morel, JL audio, Sinfoni, SoundStream, CDT... but it's...