Alpine R-A90S (D class) power amplifier (6-channel).

Alpine R-A90S (D class) power amplifier (6-channel).

Experience your music in Hi-Res with the R-A90S 6-channel R-Series amplifier. 
This is one of the most versatile Class-D 6-channel amplifiers on the market, featuring a unique staggered power channel layout that has double the power on the last two channels, 
as well as built-in high-pass and low-pass filters to build any kind of sound system.
The “R” line of speakers and subwoofers have a heritage of sound quality you can hear from a block away, and the newly added R-Series amplifiers are no exception. 
Aside from their best-in-class performance, these amplifiers are tuned to emphasize the characteristics of the R-Series speakers and subwoofers, giving you that legendary R-Series experience.