850 Watt 4-Channel Amplifier P850.4
With four channels of serious PUNCH power, the P850.4 is a great amplifier for high-powered coaxial or component speakers. Allowing you to bridge the rear channels and add a 2-ohm DVC subwoofer, the P850.4 may be the only amplifier you'll ever need! For best performance a capacitor is recommended.
- Stealth Connections
- 4 Gauge power/ground connections with built-in ATC fusing
- Connector Cover
- Focused mass heat sink allows critical aluminum material to be located around hottest internal devices
- Top Mounted LED Indicators
- Thermal Sensing
- Infrasonic filter
- Aux Ouputs
- 1 Year Warranty
Rockford Fosgate amps use MEHSA, a thermal substrate that maximizes heat transfer between MOSFET power devices ...Learn more
Rockford Fosgate amps use MEHSA, a thermal substrate that maximizes heat transfer between MOSFET power devices and heat-sink. The MEHSA substrate is so efficient at reducing MOSFET temperatures, it lowers distortion, increases durability and results in a prolonged life span.
These Avatars are a personal signature from the Rockford Fosgate team member(s) who designed and engineered ...Learn more
Engineered In The USA
These Avatars are a personal signature from the Rockford Fosgate team member(s) who designed and engineered this fanatic product. This statement illustrates our commitment to being Designed and Engineered in the U.S.A.
Trans•ana is a Class A/B topology that simplifies the signal path of the amplifier allowing the ...Learn more
Trans•ana is a Class A/B topology that simplifies the signal path of the amplifier allowing the signal to travel through the amplifier at a lower voltage. The result is greater reliability and exceptional sound quality.
NOMAD is a "real time" analog computer that protects your amplifier from shorting speaker wires and ...Learn more
NOMAD is a "real time" analog computer that protects your amplifier from shorting speaker wires and dangerously low speaker impedances.
(left-OLD | right-NEW)
Rockford Fosgate amps use custom TO-247 MOSFETs. These have 60% more ...
(left-OLD | right-NEW)
Rockford Fosgate amps use custom TO-247 MOSFETs. These have 60% more metal tab area for more power capacity, lower impedance and improved heat dissipation over traditional TO-220 MOSFETs found in competitor amps.
Onboard equalizer with up to +18dB @ 45Hz.Learn more
Punch Bass EQ
Onboard equalizer with up to +18dB @ 45Hz.
(Sum of Rated Power)
(RMS Continuous Power)
210 Watts x 4 @ 2-Ohm
425 Watts x 2 @ 4-Ohm Bridged
Input switch: 2/4 ch.
Low-Pass (LP): 40-400Hz 12dB/octave Butterworth
5.3 x 27.9 x 44.9 (cm)
Knowledge Base Articles
Ask Our Experts
Contact the Authorized Rockford Fosgate Dealer you purchased this product from. If you need further assistance, call 1-800-669-9899 for Rockford Customer Service. You must obtain an RA# (Return Authorization number) to return any product to Rockford Fosgate. You are responsible for shipment of product to Rockford.
Be the first to review this product.
No reviews yetWrite a Review
Be first to hear about the latest products.
Sign up for product updates.