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Boss PH4.400

1600W Max Phantom Series 4-Channel MOSFET Power Amplifier

  • 5.0

(6 reviews)

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Price Information

$299.99

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$89.99

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Why Shop Sonic?

Find the right amplifier for your subwoofers
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Customer Testimonial

Ordered a full stereo kit with subs after all my stuff got jacked (stolen). Blessing in disguise. I got Boss 2300W subs, Boss 3500W amp, sub box, Sony Deck, Power Acoustik 5 Farat capacitor, and (of course) a Crimestopper car alarm. Stuff arrived within the week, no problems.

- smokeape from Columbus, GA

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  • Phantom Series 4-Channel Class A/B Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 160 watts x 4 chan.
  • Max Power Rating:
    • 2 ohms: 400 watts x 4 chan.
    • Bridged, 4 ohms: 800 watts x 2 chan.
  • Max power output: 1600 watts
  • Bridgeable outputs
  • MOSFET PWM Power supply
  • Wired remote bass level control included
  • LED power and protection indicators
  • Variable 0 +/- 18 dB Bass boost
  • Trimode operation to connect a pair of speakers plus a subwoofer on one pair of output channels
  • Thermal and speaker short protection
  • Heavy duty black anodized heatsink
  • Soft turn-on circuit
  • Remote turn-on/turn-off circuit
  • Gold-plated RCA High and low level inputs
  • Gold-plated screw terminals
  • Fixed high-pass crossover (50-150 Hz)
  • Variable low-pass crossover (45-90 Hz)
  • Frequency response: 9-50,000 Hz
  • Dimensions: 9-1/2" D x 13-7/16"W x 2-1/4"H
  • 4-gauge power and ground wiring is required for installation. Contact us for information regarding a discount on select amplifier kits when purchased together with this amplifier.
  • 1-year Manufacturer's warranty
Power Specifications - Full Range Channels
RMS Power @ 4 ohms 160 watts x 4 channels
Bridged RMS Power 800 watts x 2 channels
Peak Power Output 400 watts x 4 channels
Amplifier Specifications
Amplifier Class AB
Number of Channels 4
Total Peak Power Output 1600 watts
Total RMS Power Output 640 watts
Maximum Input Gauge Size 4 AWG
Minimum Impedance Unbridged 2 ohms
Minimum Impedance Bridged 4 ohms
THD at Rated RMS Power 0.01%
Speaker Level Inputs Yes
Preamp Outputs No
Built-in Crossover Low-pass (LP)
High-pass (HP)
Full (AP)
High-Pass Crossover Frequency 50 - 150 Hz
Low-Pass Crossover Frequency 45 - 90 Hz
Signal-to-Noise Ratio 103 dB
Channel Separation 90 dB
Bass Boost 0 - 18 dB
Bass/Gain Remote Yes
Fan Cooled No
Fuse Rating 20A x 2 
CEA-2006 Compliant No
Warranty and Return Policy
Return Policy Standard Return Policy
Parts Warranty Duration 6 years
Labor Warranty Duration 6 years
Warranty Provider Manufacturer
Customer Review Summary for Boss PH4.400
Average Customer Rating is 5.0 out of 5 stars:
  • 5.0
based on 6 Reviews
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Rating Distribution:
5 star:
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 100%
4 star:
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 0%
3 star:
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 0%
2 star:
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1 star:
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what's this?
Average Attributes Rating:
Durability
  • 5.0
 5.0
Value
  • 4.8
 4.8
Features
  • 4.7
 4.7
Design
  • 4.7
 4.7
Usability
  • 4.8
 4.8
what's this?
Most Helpful Customer Reviews:
February 10, 2013 excellent
Review by
jj from austin,texas
Overall
  • 5.0
Durability
  • 5.0
Value
  • 5.0
Features
  • 5.0
Design
  • 5.0
Usability
  • 5.0
A lot of amp for the price, great buy, my first boss puchase, will be buying other products with their name
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September 5, 2012 tons of power
Review by
Scott from Olanta, SC
Overall
  • 5.0
Durability
  • 5.0
Value
  • 5.0
Features
  • 5.0
Design
  • 5.0
Usability
  • 4.0
Purchased the full phantom system (amp,5 1/4" and 6x9's) They handle full volume thrash metal easily and the music sounds fuller than it did through the infinity system they replaced. Take the time to adjust each channel, its worth it! And an install kit makes it simple to install.
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June 3, 2012 WOW!
Review by
NEETZ from LE HOCHET, Mauritius
Overall
  • 5.0
Durability
  • 5.0
Value
  • 5.0
Features
  • 3.0
Design
  • 4.0
Usability
  • 5.0
Got this amp for the last two months. Pushing 4 speakers 6x9 pionner 5 ways and a pair of pioneer ts-s20 tweeters. Still got power to give. I fully recommend this amp for speakers.
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May 10, 2012 awesome
Review by
lahf from bridgeport, NE
Overall
  • 5.0
Durability
  • 5.0
Value
  • 4.0
Features
  • 5.0
Design
  • 4.0
Usability
  • 5.0
This amp from Boss is kickin' my Kicker 15 solo l3 perfectly, and still has some leftover power for my little tweeters. I give this amp an awesome!
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November 6, 2011 Good stuff!
Review by
JJ from Livermore, California
Overall
  • 5.0
Durability
  • 5.0
Value
  • 5.0
Features
  • 5.0
Design
  • 5.0
Usability
  • 5.0
This amp is awesome! It goes well with the subs and what not! If you want a good amp get this one! I havent had any problems with it either and I've owned it for 6 months!
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View All 6 Reviews for Boss PH4.400
Amplifier Wiring Kits
Get the wires you need to properly install and power your car amp.
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NVX XKIT44 NVX XKIT44
4-Channel 100% OFC Complete True 4 Gauge Amp Kit with RCA Cables and Speaker Wire 		$114.99
Speaker Wire
Improve the sound quality by delivering more power when replacing your factory wiring. High quality speaker will maximize your amplifier investment and system performance.
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NVX XWS1225 Speaker Wire NVX XWS1225 Speaker Wire
25 ft. of True 12 Gauge 100% Copper EnvyFlex Speaker Cable/Wire 		$39.99
NVX XWS1250 Speaker Wire NVX XWS1250 Speaker Wire
50 ft. of True 12 Gauge 100% Copper EnvyFlex Speaker Cable/Wire 		$29.99
Kicker XW1220 Speaker Wire Kicker XW1220 Speaker Wire
12 Gauge Wire - 20 ft. of Dual Twist Speaker Cable with Sleeves for a Clean Install 		$39.95
StreetWires SCP1215BL - 12 AWG Speaker Wire StreetWires SCP1215BL - 12 AWG Speaker Wire
12 Gauge Wire - 15 ft. of Speaker Cable with Twisted Construction 		$24.99
RCA Interconnects
You will need a good set of RCA interconnect cables to connect your amplifier to your head unit. Using high quality cables ensure the best sound possible by reducing unwanted noise interference, providing tight contacts, and utilizing the latest in cable technology.
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NVX XIV45 4-Channel RCA Audio Interconnect Cable NVX XIV45 4-Channel RCA Audio Interconnect Cable
5 Meters (16.4 ft.) 4-Channel RCA Audio Interconnect Cable with Dual Twisted Pair Hyper-Flex Technology 		$23.99
NVX XIX45 X-Series RCA Interconnect Cable NVX XIX45 X-Series RCA Interconnect Cable
16.4 ft. of 4-Channel X-Series RCA Cable with Dual Twisted Pair Hyper-Flex Technology 		$44.99
StreetWires ZN9 Series Interconnect Cable StreetWires ZN9 Series Interconnect Cable
16.4 ft. of 4-Channel RCA Cable with Rhodium-plated contacts and ZeroNoise construction for clear signal transfer! 		$99.99
Installation, Tools & Accessories
With our professional install card, you can have your amp installed by a pro near you, or you can purchase tools and do the install yourself.
  Product Price Add?
StreetWires FB4 StreetWires FB4
4 AWG / 4 Gauge Firewall Bushing 		$7.99
Kicker DB1448 (09DB1448) - Top of the Line! Kicker DB1448 (09DB1448) - Top of the Line!
Distribution Block with Two 1/0 or 4 AWG Inputs and Four 4 or 8 AWG Outputs 		$29.95
Professional Installation for your Car Power Amplifier Professional Installation for your Car Power Amplifier
Covers labor charges through our professional installer network. 		$89.99
Testing and Performance
Optimize your system's performance with testing tools such as SPL meters, bass test discs and more!
  Product Price Add?
Scosche SPL Meter SPL1000F Scosche SPL Meter SPL1000F
Handheld boomSTICK measures your SPL range from 60 to 135 dB 		$24.99
AutoSound 2000 CD-104 AutoSound 2000 CD-104
The ultimate amplifier level setting disc used for evaluation of audio components 		$12.99
AutoSound 2000 CD-102 AutoSound 2000 CD-102
High Frequency Test CD specifically designed for the set-up and evaluation of sound system imaging and placement. 		$12.99
AutoSound 2000 CD-103 AutoSound 2000 CD-103
Audiophile reference series test disc for evaluation of all audio components. 		$12.99
Main Product
  Product Price Add?
Boss PH4.400 Boss PH4.400 $89.99

Product Summary

Manufacturer: Boss
Model number: PH4.400
UPC: 791489112116
Weight: 11.00 lbs
Internal SKU: ph4400
Internal product ID: 21823