Name: Alpine R-A90S
SKU: R-A90S
Availability: InStock

Description

Alpine R-A90S

The Alpine R-A90S is a versatile 6-channel Class D amplifier from Alpine’s R-Series, engineered to deliver high-resolution audio performance. It offers a unique staggered power configuration, providing 75 watts RMS per channel for the first four channels, and 150 watts RMS for the fifth and sixth channels at 4 ohms. This design allows for flexible system configurations, including 3-way active setups or 5-channel systems with dual subwoofers. With a frequency response extending up to 45 kHz, the R-A90S ensures accurate and dynamic sound reproduction. Its compact size facilitates easy installation in various vehicle applications.

Specifications

Features

Feature	Details / Notes
Amplifier Type	6-Channel (5-Channel Power)
Subwoofer Capability	5th & 6th channels bridged up to 500W @ 4Ω
System Upgrade	Supports 3-way active systems with strong mid-bass power
Sound Accuracy	Low phase shift, hi-resolution frequency response for true sound reproduction
Amplifier Circuit	Alpine Class D

Tech Specs

Spec	Value
Dimensions (WxHxD)	12.75″ x 10.75″ x 2″
Hi-Res Audio	Compliant up to 40 kHz
Power Output	75W x 4 + 150W x 2 @ 4Ω; 100W x 4 + 250W x 2 @ 2Ω
Bridged Power	200W x 2 + 500W x 1 @ 4Ω
S/N Ratio	>85 dB (ref. 1W into 4Ω)
THD + N	<0.03% (ref. 10W into 4Ω)
Frequency Response	10 Hz – 45 kHz (0/-3dB)
Damping Factor	>500
Compliance	CTA-2006

About The Product

6-Channel Amp with 5-Channel Power

The R-A90S has a unique staggered power channel layout that has double the power on the last two channels. When looking to power a dual subwoofer configuration, the R-A90S’s 5th and 6th channels can be bridged to provide up to 500-watts at 4Ω. The R-A90S is matched in power and performance for the Dual 10-inch Alpine Halo S-Series Preloaded Subwoofer Enclosures with ProLink™.

An Amp the Grows with You

Thanks to the unique staggered power channel layout, the R-A90S can host different levels of power on each channel, compared to traditional, multi-channel amplifiers. This allows the R-A90S to grow with you as it can effectively function as both a 3-way active amplifier and a 5-channel amplifier by delivering the power you need to the channels where you need it the most.