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Alpine R-A90S with RUX-KNOB.2

1500W RMS R-Series Class-D 6-Channel Amplifier + Remote Bass Knob for Alpine Amplifiers

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• 75 watts x 4 channel + 150 watts x 2 channel @ 4 ohm
• 100 watts x 4 channel + 250 watts x 2 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm + 500 watts x 1 channel @ 4 ohm
• Total RMS Power: 900 watts
• Class D 2 ohm Stable 6-Channel-Channel Amplifier

Learn more about the ra90s_ruxknob2
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List price $900.00
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Description


Alpine brand icon

Authorized dealer

Alpine R-A90S

900W RMS Class D R Series 6 Channel Car Amplifier
Quantity: 1

Product Details:

  • R-Series Class D 2 ohm Stable 6-Channel Amplifier
  • RMS Power Rating:
    • 4 ohm: 75 watts x 4 channel + 150 watts x 2 channel
    • 2 ohm: 100 watts x 4 channel + 250 watts x 2 channel
    • Bridged: 200 watts x 2 channel @ 4 ohm + 500 watts x 1 channel @ 4 ohm
  • Total power output: 900 watts
  • Compatible for amplifying a 3-way active system
  • Optional Alpine RUX-KNOB.2 bass remote (sold separately)
  • Speaker-level (high-level) inputs (Requires adapter like the Kicker KISL)
  • Hi-resolution audio compliant (40kHz)
  • Input sensitivity:
    • Low level: 0.2 - 4.0 volts
    • High level: 0.5 - 10 volts
  • Frequency Response: 10 - 45000 Hz
  • Total Harmonic Distortion (THD): 1%
  • Signal to Noise Ratio: 85 dB
  • Variable high-pass/band-pass filter:
  • Variable low-pass/band-pass filter: 50 - 400 Hz
  • Fuse Rating: 90A
  • 4 AWG gauge amplifier wiring kit is recommended for installation
  • Dimensions: 12.75" L x 10.75" W x 2" H
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty
  • MFR #: R-A90S

Alpine RUX-KNOB.2

Dash Mount Wired Bass Remote Controller for Alpine Amplifiers
Quantity: 1

Product Details:

  • Wired Bass Remote Controller
  • Compatible with Alpine amplifiers (Sold separately
  • Dash-mountable installation using two mounting flanges
  • Multi-amp connection capable using a phone cable splitter (Sold separately)
  • Variable Gain Control: 0 to -12 dB
  • Color: Black
  • Wire Length: 16 ft
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Compatible Amplifiers (Sold Separately):


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Specifications & Details


Key Features
Amplifier Key Features
Hi-Res Audio Certified
Speaker Level Inputs
Power Specifications - Full Range Channels
RMS Power @ 4 ohms
75 watts x 4 channel
RMS Power @ 2 ohms
100 watts x 4 channel
Bridged RMS Power
200 watts x 2 channel
Power Specifications - Subwoofer Channel
RMS Power @ 4 ohms
150 watts x 2 channel
RMS Power @ 2 ohms
250 watts x 2 channel
Amplifier Specifications
Series
R-Series
Amplifier Class
D
Number of Channels
6-Channel
Total RMS Power Output
900 watts
Maximum Input Gauge Size
4 AWG
Minimum Impedance Unbridged
2 ohm
Minimum Impedance Bridged
4 ohms
Frequency Response
10 - 45000 Hz
THD at Rated RMS Power
1%
Speaker Level Inputs
Yes
Built-in Crossover
Band-Pass (BP)
Low-Pass (LP)
High-Pass (HP)
Full (AP)
High-Pass Crossover Frequency
50 - 6000 Hz
Low-Pass Crossover Frequency
50 - 400 Hz
Signal-to-Noise Ratio
85 dB
Remote bass/level controller
Optional (Accessory required and sold separately)
Fuse Rating
30A x 3 
Total Fuse Rating
90
Sonic Certified Amplifier
Not Tested
Hi-Res Certified
Yes
Low-Level Input Sensitivity
0.2 - 4.0 volts
High-Level Input Sensitivity
0.5 - 10 volts
What is in the box?
Paperwork
User manual
Warranty/Registration card
Serial number card
Power certification
WITB: Amplifiers
Amplifier
Mounting Brackets
Mounting screws (4)
Three spare fuses
Allen wrenches (2)
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

RA90S_RUXKNOB2

Weight:

5.50lbs

Internal SKU:

ra90s_ruxknob2

Internal Product ID:

203800

Customer Ratings & Reviews


Alpine R-A90S with RUX-KNOB.2 thumbnail image

5 star
85%
4 star
15%
3 star
0%
2 star
0%
1 star
0%



Durability
4.9
Value
4.8
Features
4.9
Design
4.8
Usability
4.9

Customer Reviews

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Convenient

The following review is for RUX-KNOB.2, which is a part of the bundle you are viewing.

So convenient being able to control the gain from the car.

By Rizzy on April 30, 2018

56 found this helpful


Great item

The following review is for RUX-KNOB.2, which is a part of the bundle you are viewing.

Works as it should. It is a solid knob. Not cheap like others

By Anonymous on August 31, 2019 Checkmark Icon Verified purchase

53 found this helpful


Good quality fast shipping

The following review is for RUX-KNOB.2, which is a part of the bundle you are viewing.

Great product fast shipping great customer service will recommend to friends

By Omar on March 16, 2018

52 found this helpful


Awesome Product!

The following review is for RUX-KNOB.2, which is a part of the bundle you are viewing.

Purchased the MRV-M1200 Alpine amp which already comes with the previous version of the Rux Knob but figured I'd give this one a try. Best part is the larger db adjustment range with this 2.0 version.

By Kevin on May 1, 2018 Checkmark Icon Verified purchase

48 found this helpful


A Crazy Versatile Amp with surprising Power

The following review is for R-A90S, which is a part of the bundle you are viewing.

Ill start with explaining why I went with this Amp. I have a 1998 Volvo S70 T5 with every option and that includes the Dolby Surround System. That system was designed as 8 Ohm. So I made the decision that I would be completely rewiring the car and removing the factory Amp. The car has a Center Speaker, 2 6.5's with dash tweeters, 2 rear door speakers that are also 6.5's and 2 8" speakers on the deck. The car is loaded with speaker locations and that left me with the need to find an Amp that can power all of this. Enter the R-A90S, With the staggered power on channels 5&6 it was the perfect opportunity to install Alpine 6x9's on the deck to replace the OEM 8" speakers. The only exception is I am running the center channel off the deck itself. Regardless this amp does a great job of giving adequate power to all the speakers. Also this Amp is putting out a health amount of power above what was advertised. Even the included Birth sheet shows their test results on the amp you receive. My amp was putting out almost 15% more power than the guaranteed values.

Bottom line is that if you are looking for an amp to power a non standard setup this Amp allows you to get creative with your install. Its fantastic! 10/10

By Matthew on May 9, 2023 Checkmark Icon Verified purchase

43 found this helpful


Easy install

The following review is for RUX-KNOB.2, which is a part of the bundle you are viewing.

Easy installation and works as expected. Disassembles easily for flush mount behind dash, which makes for a very clean install. Just plug it in and it works. It definitely has the dead spot as mentioned on other reviews, but was expecting that. Rux-knob.2 has a higher db adjustment as compared to the original model (20db vs 12db). Worth having installed on your system!

By Jorge on September 2, 2018 Checkmark Icon Verified purchase

34 found this helpful


The following review is for RUX-KNOB.2, which is a part of the bundle you are viewing.
By Anonymous Shopper on September 11, 2023 Checkmark Icon Verified purchase

29 found this helpful


The following review is for RUX-KNOB.2, which is a part of the bundle you are viewing.
By Louis on February 3, 2024 Checkmark Icon Verified purchase

20 found this helpful


The following review is for RUX-KNOB.2, which is a part of the bundle you are viewing.
By Austin on September 14, 2024 Checkmark Icon Verified purchase

9 found this helpful


Fantastic

The following review is for RUX-KNOB.2, which is a part of the bundle you are viewing.

It works with a Alpine mrx m110 plug and play. Super high quality knob that is really well weighted. I would suggest aswell buy again.

By William on June 10, 2024 Checkmark Icon Verified purchase

7 found this helpful




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