The Alpine S-A55V is a 5-channel amplifier in the S-Series family designed to pair with S-Series speakers. It incorporates digital amplification technologies used in higher Alpine series while targeting reliable performance and value-oriented installations.

All-digital Class-D design delivers high power in a compact 286mm width x 204mm length footprint for easy installation. The amp features an improved heat sink and protection circuit to prevent thermal shutdown, one-sided speaker and power terminals that accept heavy gauge cable, selectable high-pass and low-pass filters and low/high-level RCA inputs. The unit is compatible with the optional RUX-KNOB2 remote bass control for channel 5 subwoofer level adjustment.