Skip to content
  • Our Stores
  • Contact
  • FAQ
  • Privacy Policy
  • Returns
  • Newsletter

    Sign up for Newsletter

    Signup for our newsletter to get notified about sales and new products. Add any text here or remove it.

    Nix WarehouseNix Warehouse
    • SHOP
      • Shop by Categories
      • Shop By Brands
      • Sales
    • Used Parts
    • Login
    • Cart / $811.98 2
        • × Plano Waterproof StowAway Utility Box - 3500 SizePlano Waterproof StowAway Utility Box - 3500 Size
          1 × $11.99
        • × Fusion Apollo Marine 6 Channel 1800-Watt AmplifierFusion Apollo Marine 6 Channel 1800-Watt Amplifier
          1 × $799.99

        Subtotal: $811.98

        View cartCheckout

    • 2
      Cart
      • × Plano Waterproof StowAway Utility Box - 3500 SizePlano Waterproof StowAway Utility Box - 3500 Size
        1 × $11.99
      • × Fusion Apollo Marine 6 Channel 1800-Watt AmplifierFusion Apollo Marine 6 Channel 1800-Watt Amplifier
        1 × $799.99

      Subtotal: $811.98

      View cartCheckout

    Customer matched zone "USA"
    “Fusion Apollo Marine 6 Channel 1800-Watt Amplifier” has been added to your cart. View cart
    Add to wishlist
    Roswell R1 650.4 4-Channel Marine Amplifier
    Roswell R1 650.4 4-Channel Marine Amplifier - Image 2
    Home / Entertainment > Amplifiers

    Roswell R1 650.4 4-Channel Marine Amplifier

    SKU: 100981 Categories: Entertainment > Amplifiers, Uncategorized
    Roswell Marine
    • Description
    • Brand
    • Accessories
    • Literature
    • Videos

    R1 650.4 4-Channel Marine Amplifier

    The R1 650.4 marine-grade amplifier from Roswell, is everything a boat’s audio system has always wanted. These stackable amplifiers utilize a 4-channel Class-D design that puts out 100 watts RMS per channel at 4Ω and is perfect for powering an R1 6.5″ marine speaker setup.

    Easily bridge and tune with the calibrated crossover controls. Because LEDs create lots of noise issues, this amp features differential RCA inputs for maximum noise rejection. The R1 650.4 is built with fully conformal-coated PCBs and nickel-plated marine-grade wire terminals to ensure their quality.

    Features:

    • Ch 1-4 calibrated crossover (FULL/HPF/LPF)    
    • Space-saving stackable design
    • Bridgeable 4-channel design
    • Marine-grade durability
    • 2 Ohm Stable at 165 watts per channel    
    • High-Efficiency Class-D Topology
    • Conformal-coated PCBs 
    • The lit logo power indicator lets you know your amp is receiving power    
    • Nickel-plated wire terminals
    • Switchable Differential RCA inputs minimize interference and induced noise

    Specifications:

    • Continuous Power (RMS): 4Ω: 100W x 4 / 2Ω: 165W x 4 
    • Bridged: 4Ω: 300W x 2
    • Frequency Response: 10Hz – 25Hz
    • Input Sensitivity: 0.2–10.0V
    • HPF (High Pass Filter): 30Hz – 300Hz
    • LPF (Low Pass Filter): 30Hz – 300Hz
    • Bass EQ: 0-18dB @ 45Hz
    • Subsonic Filter: 10Hz – 55Hz
    • Dimensions: Inches: 1.90 x 7.06 x 11.125 Centimeters: 4.83 x 17.94 x 28.26

    Brand

    Roswell Marine

    Accessories

    • Roswell Marine Amp Wiring Kit
    • Roswell 5M 6-Channel RCA Cable
    • Roswell .5M 2-Channel RCA Cable
    • Roswell 1M 2-Channel RCA Cable
    • Roswell 5M 2-Channel RCA Cable
    • Roswell 1M to 2F Y Adapter
    • Roswell 1F to 2M Y Adapter
    • Roswell R1 Amp Spacers
    • Roswell 1-In 2-Out Ground Distribution Block
    • Roswell 1-In 4-Out Fused Distribution Block
    • Roswell 1-In 4-Out Ground Distribution Block

    No literature available for this product.

    No videos available for this product.

    Related products

    Poly-Planar ME-52 2 Channel Amplifier - 50 Watts
    Add to wishlist
    Quick View

    Entertainment > Amplifiers

    Poly-Planar ME-52 2 Channel Amplifier – 50 Watts

    Poly-Planar
    $139.95

    ME-52 2 Channel Amplifier – 50 Watts The ME-52 is a compact 2-channel 50-watt audio amplifier with separate volume control. This unit is designed for adding additional speakers to an existing system or as a separate zone amp. Features:  To add additional loudspeakers to a current audio system To provide amplification for a separate audio [...]

    Add to cart
    Furuno 30M NMEA2000 Backbone Cable f/PB200 & 200WX
    Add to wishlist
    Quick View
    Out of stock

    Uncategorized

    Furuno 30M NMEA2000 Backbone Cable f/PB200 & 200WX

    Furuno
    $220.00

    30M NMEA2000 Backbone Cable for PB200 Furuno’s 30M backbone cable NMEA2000 is specifically for the PB200 and 200WX. WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

    Read more
    Fusion Apollo Marine 8 Channel 2400-Watt Amplifier
    Add to wishlist
    Quick View

    Entertainment > Amplifiers

    Fusion Apollo Marine 8 Channel 2400-Watt Amplifier

    Fusion
    $949.99

    Apollo Marine 8 Channel 2400-Watt Amplifier This 8-channel amplifier with 150-watt RMS per channel can power up to eight pairs of speakers or four pairs of speakers and two subwoofers. It includes high-power mode adapters for simple bridging to increase power. Features: Keep the music going for longer without draining your battery as quickly No [...]

    Add to cart
    Poly-Planar ME-60 4 Channel Amplifier - 120 Watts
    Add to wishlist
    Quick View

    Entertainment > Amplifiers

    Poly-Planar ME-60 4 Channel Amplifier – 120 Watts

    Poly-Planar
    $179.95

    ME-60 4 Channel Amplifier – 120 Watts The ME60 is a four channel 120 Watts RMS audio amplifier of delivering up to 30W RMS per channel.  It has a compact, water resistant design that allows for flexible mounting possibilities, and makes it simple to expand the audio system capabilities for any installation. Features: To add [...]

    Add to cart
    Roswell R1 1000.1 Mono-Block Marine Amplifier
    Add to wishlist
    Quick View

    Uncategorized

    Roswell R1 1000.1 Mono-Block Marine Amplifier

    Roswell Marine

    R1 1000.1 Mono-Block Marine Amplifier Roswell’s R1 1000.1 amp is a mono-block stackable Class-D design that pairs perfectly with our new R1 subs. It also features a calibrated potentiometer. This amp is powerful, like super powerful. It can run (2) R1 12″ subwoofers or (4) R1 10″ subwoofers. Get bumpin’. Features: Space-saving stackable design The [...]

    Read more
    Lowrance N2KEXT-25RD 25' Extension Cable - Red NMEA
    Add to wishlist
    Quick View

    Uncategorized

    Lowrance N2KEXT-25RD 25′ Extension Cable – Red NMEA

    Lowrance
    $76.99

    Lowrance Extension Cable 25′ extension cable. For use with LGC-3000 and red NMEA network.

    Add to cart
    Roswell R1 900.6 6-Channel Marine Amplifier
    Add to wishlist
    Quick View

    Uncategorized

    Roswell R1 900.6 6-Channel Marine Amplifier

    Roswell Marine

    R1 900.6 6-Channel Marine Amplifier The R1 900.6 marine-grade amplifier from Roswell is everything a boat’s audio system has always wanted. Utilizing a 6-channel Class-D design that puts out 100 watts RMS per channel at 4Ω, these amps are perfect for powering an R1 8″ and R1 6.5″ marine speaker setup.   This amp features [...]

    Read more
    Boss Audio Elite 500W Mono-Block Class D Amplifier
    Add to wishlist
    Quick View

    Uncategorized

    Boss Audio Elite 500W Mono-Block Class D Amplifier

    Boss Audio

    Elite 500W Mono-Block Class D Amplifier Boss Audio Systems MPD500.1 Elite Series Monoblock Class D Car Amplifier – 500 High Output, 1 Ohm, Low-Level Inputs, Low Pass Crossover, MOSFET, Full Range, Hook Up To Subwoofer For Bass. Features: Monoblock Full-Range, Class D PWM MOSFET Power Supply RCA Level Inputs Low Pass Filter Subsonic Filter Bass [...]

    Read more
    Latest
    • Placeholder Lumitec Surface Mount Aluminum Navigation Light Port - Red
    • Placeholder Lumitec Surface Mount Aluminum Navigation Light Starboard - Green
    • Placeholder VETUS V-CAN 3-Point Y-Hub
    • Placeholder VETUS Airvent Elbow w/Connect - 38mm
    Best Selling
    • Connect-Ease 24V 6 Gauge Heavy Duty Series System Connect-Ease 24V 6 Gauge Heavy Duty Series System
    • Fusion Apollo MS-RA770 Touchscreen AM/FM/BT/SiriusXM Stereo - 4 Zone w/DSP Fusion Apollo MS-RA770 Touchscreen AM/FM/BT/SiriusXM Stereo - 4 Zone w/DSP $699.99
    • Airmar Garmin 12-Pin Mix & Match Cable f/Chirp Transducers Airmar Garmin 12-Pin Mix & Match Cable f/Chirp Transducers $127.50
    • Lenco 102 Series Standard Actuator - 12V - 4-1/4" Stroke Lenco 102 Series Standard Actuator - 12V - 4-1/4" Stroke $390.06
    Top Rated
    • Johnson Pump Threaded Blue Insert f/61121 & 61122 Johnson Pump Threaded Blue Insert f/61121 & 61122 $36.27
    • Garmin LakeVü g3 Ultra U.S. - West Garmin LakeVü g3 Ultra U.S. - West $199.99
    • Johnson Pump F35B-8007 Impeller Pump - Pedestal Style Mount Johnson Pump F35B-8007 Impeller Pump - Pedestal Style Mount $400.93
    Upcoming Events and Sales
    June 2025
    M T W T F S S
     1
    2345678
    9101112131415
    16171819202122
    23242526272829
    30  
    « Mar    
    About us
    Proudly owned and operated by Nix Yacht Services LLC. This website was created to serve as our showroom for all our suppliers and products. Company started as complete yacht management in San Diego, CA. During the years we have been involved in variety of projects. Our goal was aways been bringing quality, transparency and satisfaction.
    Hours & Info
    El Cajon, CA 92020
    +1 (619) 508-3995
    nick@nixwarehouse.com

    Please note that your item may ship from warehouses located in all parts of the country. We make every effort to ship from locations closest to our customers. Items are shipped Monday – Friday excluding holidays. Overnight and two day delivery options are available.
    • Our Stores
    • Contact
    • FAQ
    • Privacy Policy
    • Returns
    Copyright 2025 © Nix Warehouse
    • SHOP
      • Shop by Categories
      • Shop By Brands
      • Sales
    • Used Parts
    • Login
    • Newsletter

    This is a demo store for testing purposes — no orders shall be fulfilled. Dismiss

    Login

    Lost your password?

    Register

    Your personal data will be used to support your experience throughout this website, to manage access to your account, and for other purposes described in our privacy policy.