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Boss PH4000D

4000W Max Phantom Series Class D Monoblock Power Amplifier

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List price $299.99

$129.00

with warranty

You Save: $170.99 (57.00%)

Arrives by Monday, Aug. 4 to zip 98109

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Arrives by Mon, Aug. 4

  • Phantom Series Monoblock Class D Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 1600 watts x 1 chan.
  • Max Power Rating:
    • 2 ohms: 3000 watts x 1 chan.
  • Max power output: 4000 watts
  • MOSFET PWM Power supply
  • Wired remote bass level control included
  • LED power and protection indicators
  • Variable 0 +/- 18 dB Bass boost
  • Thermal and speaker short protection
  • Heavy duty black anodized heatsink
  • Soft turn-on circuit
  • Remote turn-on/turn-off circuit
  • Input sensitivity control
  • Gold-plated RCA High and low level inputs
  • Gold-plated screw terminals
  • Subsonic filter crossover (15-40 Hz)
  • Variable low-pass crossover (45-90 Hz)
  • Frequency response: 9-50,000 Hz
  • Dimensions: 9-1/2" D x 15"W x 2-1/4"H
  • 0/1-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 - Subwoofer Channel

RMS Power @ 4 ohms
The RMS power rating is the measure of continuous power that an amplifier can output, or a speaker can handle. It is the most accurate depiction of real, continuous power that the industry has so far. If the final impedance of your speaker(s) or subwoofer(s) equals 4 ohms, this is how much power this amplifier will supply at that ohm level. The higher the RMS wattage, the more clean and loud your music will sound. The 5th channel on these particular amplifiers are usually dedicated for driving subwoofers.
1600 watts x 1 channels
Peak Power Output
This form of power rating refers to the maximum amount of power an electronic device can handle or output in an instant without damage. Often times this maximum is achieved during a brief musical burst, such as a drum accent or low bass hit. Some manufacturers display peak power ratings on the face of their products to increase the appeal to consumers. The RMS power rating is more accurate, and we recommend using it for product comparison. This is the peak power output for the amplifier's 5th channel.
4000 watts x 1 channels

Amplifier Specifications

Amplifier Series
This designates the series of the amplifier. Many amps are available in a litany of different wattage and channel configurations, but maintain consistent features throughout the product line.
Phantom (Boss)
Amplifier Class

An amplifier increases the power of the signal being fed to it by taking energy from its power supply and matching the signal but increasing its amplitude. Amplifiers use many different methods for converting these electrical signals and have been categorized into classes.

Class A/B: Greater than 50% of the input signal is amplified while the other percentage is “off”. These amplifiers have a small amount of current flowing through the output transistors all the time which almost eliminates crossover distortion. Class A/B has great sound quality but is not as efficient as class D. These amps are most commonly used to drive speakers.

Class D: Also known as switching amplifiers, class D amps have output transistors that are completely turned “on” or “off”. This means that when the transistors are on, there is almost no voltage across them but when they are off there is significant voltage but no current flowing through it which makes these amplifiers very efficient at the cost of sound quality. These amps are most commonly used to drive subwoofers.

Other Classes: You may see classes such as GH, bD, X, FD, etc. by some manufactures. These amplifiers tend to be either class A/B, D or a hybrid of the two but with improvements to their designs that can make them more efficient or offer better sound quality.

D
Number of Channels
Each channel on an amplifier will power one speaker using a positive and negative cable. There are various types of amplifiers, each designed to power a certain number of speakers. Monoblock amplifiers, also known as single channel, are designed to power one or more subwoofers. These amplifiers often have very high power ratings. On the other hand, multi-channel amplifiers power multiple speakers, usually at lower power ratings. 2-Channel and 4-Channel amplifiers can power car speakers or low powered subwoofers. Occasionally you might see a 5 or 6-channel amplifier that can power speakers and subwoofers at the same time. The most common setup is a monoblock amp to run subwoofers and a 4-channel amp to run door speakers. Check out our Knowledge Base for more information.
1 - Mono
Total Peak Power Output
The total peak power output is measured as the wattage per channel multiplied by the number of channels, and is calculated at the lowest level of operating impedance.

It is measured during a brief musical burst, such as a sudden drum accent. Some manufacturers display peak power ratings on the face of their products to increase the appeal.

The RMS power rating is more accurate, and we recommend using it for product comparison.

4000 watts
Total RMS Power Output
Total RMS power is measured by multiplying RMS power per channel by the number of channels, and is calculated at the lowest level of operating impedance.

RMS power is the amount of continuous power, measured in watts, that an amplifier produces is called RMS power. The higher the RMS figure, the louder and cleaner your music sounds.

The RMS output figure is much more accurate than the peak rating when comparing products.

1600 watts
Maximum Input Gauge Size
This is the largest gauge wire that will fit into the power and ground terminals of this device. The lower the gauge number, the thicker the wire is. For example, a 4 gauge wire is thicker than an 8 gauge wire and thus has higher current carrying capacity. Always do your best to get this size wire to reduce the risk of damage to your components.
1/0 AWG
Minimum Impedance Unbridged
The lowest impedance the amplifier will handle when it is not bridged.
2 ohms
Minimum Impedance Bridged
The lowest impedance the amplifier will handle when it is bridged.
Not Bridgeable
Speaker Level Inputs
Speaker level inputs are commonly referred to as high-level inputs and vice versa. This input type allows you to get your audio signal directly from the speaker wire in your vehicle, instead of using RCA cables. The advantage of this is factory integration, as most stock radios do not have RCA outputs to run amplifiers.
Yes
Preamp Outputs
Many amplifiers are equipped with RCA preamp outputs which pass the original music signal from the source to additional amplifiers. This is known as daisy chaining because the source connects to the first amp, and the first amp connects to the second amp, etc. The advantage to daisy chaining is you only need one 2-channel RCA cable to transfer the signal from the head-unit to the amplifier, and then one additional cable for each amp being daisy chained.
1 pair
Built-in Crossover

A crossover is a type of filtering system that permits only certain frequencies to play. A Low-Pass (LP) crossover allows only frequencies below its setting to get through which is good in the case of some subwoofers. A High-Pass(HP) filter allows frequencies above its setting to pass through, this is normally used on speakers.

When a crossover is set to FULL it means no filtering is added and the full frequency spectrum is allowed through the amplifier. Filtering is important because feeding a speaker frequencies it cannot reproduce effectively creates distortion.

Low-pass (LP)
Low-Pass Crossover Frequency
The low-pass crossover frequency is typically used for subwoofers. It can be a fixed crossover point or a variable crossover range. A variable low-pass crossover allows you to select a specific crossover point which allows frequencies below the set crossover point to pass, while making frequencies above the set point gently or harshly roll-off, depending on the steepness of the slope.

The steepness of the roll-off slope is measured in dB/octave and refers to the rate of attenuation (lowering of volume) outside their pass bands.

50 - 150 Hz
Subsonic Filter
Allows you to block (filter) ultra-low frequencies that your subs cannot reproduce.
15 - 40 Hz
Signal-to-Noise Ratio
This spec compares the strength of the signal to the level of background noise. A higher value indicates less background noise.
100 dB
Bass Boost
The objective of the bass boost is to get more kick out of your subwoofer. It is a circuit that emphasizes the lower frequencies at a given point. The bass boost should always be set first before setting the gain. This feature is known for destroying subwoofers and is commonly used incorrectly, so be cautious.
0 - 18 dB
Bass/Gain Remote
If the amp comes with a bass/gain remote you will be able to control the level of your bass from your dashboard. Typically bass remotes also include a 16-20 ft. wire for installation.
Yes
Fan Cooled
A great feature to have if an amp generates a large amount of heat. Cooling fans can help regulate the temperature to prevent the amp from overheating (burning).
No
Fuse Rating
The amperage and the number of fuse(s) an amp requires.
35A x 3 
CEA-2006 Compliant
Amplifiers that have been tested to meet specific standards. When a car amplifier meets these standards, you can be sure that it will be able to produce the amount of power specified by the official CEA-2006 rating. Usually, these rating consist of the following items:
  • RMS Power
  • Signal-to-Noise Ratio

This rating applies to both external car amplifiers, as well as the amplifiers inside of in-dash stereos.

No

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
61%
4 Star
17%
3 Star
6%
2 Star
11%
1 Star
6%

Average Attribution Rating

Durability
3.9
Value
4.2
Features
3.9
Design
4.0
Usability
4.3

Trip10

Roscoe, il

Overall
Durability
Value
Features
Design
Usability

Powerful but definately not 4000 watts

February 5, 2012

I do reccomend this amp highly its a great bargain and can do good numbers on termlab :). But its no 4000 watt amp or even close. I have mine wired to 3 500 watt rms 10s at 6 ohms and when i clamped it im only getting a little over 500 watts rms from this amp. With that being said im still doin a 142.2 on the meter with stock batt and alt with 8 ga wire and no extra batt or cap.

2 of 2 found this helpful

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jeniffer

Trinidad and Tobago

Overall
Durability
Value
Features
Design
Usability

great value

March 25, 2014

its i very wonderful item and i will not hesitate an recommending anyone to buy this product

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jeniffer

Trinidad and Tobago

Overall
Durability
Value
Features
Design
Usability

great value

March 25, 2014

its i very wonderful item and i will not hesitate an recommending anyone to buy this product

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Stan

WPB, fl

Overall
Durability
Value
Features
Design
Usability

Best low budget amp you can get!!!

September 8, 2013

If you are looking for a car amp that will give you the bang for your buck. This ph4000d is the beast for the job.

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RAY

chicago, IL

Overall
Durability
Value
Features
Design
Usability

great

December 6, 2012

This amp is great I have it powering two Pioneer subs , seen the same one in store for almost 3 times as much. I would recommend it to anyone

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Leo

Fiji

Overall
Durability
Value
Features
Design
Usability

Good Buy!!!

September 9, 2012

I have had this amp for a lil less then a year and have found it 2 be 1 hell of an amp. First i used to run 2 x Boss Chaos 15" 1800watts subs.... then i wired this to an Alpine Type R 15" then to a Blaupunkt Velo Pro VPW380 and now to a Blaupunkt Velo Pro VPW460 i have always turned heads pumpin these beast with this Boss PH4000D heving it tuned to the best frequency for the best response and hevin the subs in the perfectly recommended sized enclosures.

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dbcer

East San jo

Overall
Durability
Value
Features
Design
Usability

Great amp

August 3, 2012

I have this amp pushing an Alpine type r 15 at 2ohm. This thing knocks, perfect amp for one or two subs i highly reccomend it.

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Microg4

Raleigh, NC

Overall
Durability
Value
Features
Design
Usability

Not too bad

July 11, 2012

I have had this amp for just under a year , i am pushing a 1200 rms sub @ 4ohms, recently reconfigured to 2ohms , it played for about a month the suddenly one morning no sound from the sub . The power light was on , protect light off , but no sound. Thank god for sonicelectronic great customer service , they had a rma ready for me by the next day . Overall the amp is great, it sounds good, i pushed it alot @4ohms, but i think the combination of the 100deg+ summer heat and the extra load @2ohms broke it.

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paul

slc,utah

Overall
Durability
Value
Features
Design
Usability

ph4000 boss monoblock amp

May 12, 2012

I have had nothing but good to say about boss i have had it now for 1year and it runs with 2-2000watt 12,kenwoods premeirs i just added 2 more boss amps a ph4.600 4 channel and a ph2.1300 and for the money it rocks,i noticed a couple reviews and they said they were disappointed,suggestion adjust your amp or amps if you dont you wont get the sound you are looking for,i think my system for the money now 4,12z 2,6by9z,2 6z and2 6by4z it is sweet and i found the sound that i was looking for!

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easy

huntsville

Overall
Durability
Value
Features
Design
Usability

amp

February 29, 2012

If you keep it on 2 ohms it bangs, but wired down to 4 it's very week.

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lisa

toney, AL

Overall
Durability
Value
Features
Design
Usability

i got one lol

February 16, 2012

I bought this last week. It arrived today and I must say im a little pissed i have an spl1000 watt amp and its almost twice as strong as this plus my 2000 watt boss amp was stronger too. it dosent get hot my spl does but it bangs way harder. So if u have 1000 maxxx sub go for it, anything over that and you'll prolly be dissapointed like me. lol

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@YaBoiRobG

Stuttgart, AR

Overall
Durability
Value
Features
Design
Usability

Disappointment.

February 3, 2012

Okay this amp has tons of power while it works do not get me wrong, but I have had two of these and they just quit working. Im running two 15" Merlon subs and they destroy the amp. They are 2000 watt max so the amp should have worked but they never held up. The lights are on and the green power works but no sound comes out. Happened two times with this model and once with the ph3000d. I guess you get what you pay for though.

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Tyrail

Clovis, NM

Overall
Durability
Value
Features
Design
Usability

Surprised

November 22, 2011

I was actually shocked at how much power this thing had. I had it hooked up to two l7 Kicker solobarics. The plastic plates are annoying though. It was pretty loud too and my rearview wouldnt stay still!!!! In this case u get more than wat u pay for!!!

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Gary

Atlanta, GA

Overall
Durability
Value
Features
Design
Usability

Good Stuff

September 29, 2011

Good amp , I have been playing it hard (dubstep, hiphop, dancehall/reggae) for a 2 week period and it is solid as a rock so far. One thing, when I took the end plates off the plastic border broke, but its not noticeable when the end plates go back on. The Bass level remote control looks kind of cheap but it works. Looking to get a 4ch phantom for my tops as well.

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Ryan

Blountsville, AL

Overall
Durability
Value
Features
Design
Usability

Great.

January 25, 2011

Very Sleek, Pretty Powerful. For the price. DEF. worth it! The end caps are a little annoying when tinkering with it at first. I almost left them off. This is paired with two Boss Outcast 12's and it's super Loud. and the amp only stays halfway up. I would recommend this to anyone looking for a powerful budget amp. But if you just wanna Blow money and get super power, Go with Kicker, Orion, JL, or Rockford.

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jr

fairfield,pa

Overall
Durability
Value
Features
Design
Usability

piece of crap

April 7, 2012

This amp is crap. It is way over rated and pushes maybe 1/4 of what it really say. It has a protection mode, but guess what it don't go into it, all it does is blow up and catch on fire. This amp about burned my truck. Do not get unless you want to roast marshmallows in your trunk.

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Michael

Carroll, IA

Overall
Durability
Value
Features
Design
Usability

Joke

March 13, 2012

This amp is a joke. Good if you only have one sub but for price you pay I expected it to push both my subs since it has more power then one. On a side note it does make my one sub I can hook up to it hit hard so if you only plan on using one sub then this amp will work fine.

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matt

roscoe, illinois

Overall
Durability
Value
Features
Design
Usability

impressive

December 31, 2011

I had this amp on 2 15" phantom subs and blew them within 2 weeks. Had them hooked up to 3 12s and blew them. Now I have it powering 3 10s and its plenty of power. I beat them all day long and the amp is fine definitely well worth the money I would buy this amp all day long. Next investment I've made in car audio besides the subs its powering. Buy this amp!!! And I'd definitely suggest buying a 10 or more farad cap or a battery. This will for sure make your lights dim. Hope this was helpful to anyone wanting to buy. Here's a list of what I'm running. Stock alt and battery, 4 gauge wire, phantom 4000 watt amp and 3 10" crunch groundpounders in a sealed 1.5 cubic foot enclosure (very small) wired at 2.6 ohms. Very clean and loud hut I need a different box.

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Accessory Tools and Products

Accessories added

NVX XKIT02 True 0-Gauge Wiring Kit

In case you didn't know, NVX has top notch wire for your new amp! Don't forget the RCA's!

Your Price $149.99

Stinger SK6201 0-Gauge Wiring Kit

You only get great sound when you use great wire. This Stinger kit will do the trick! Don't forget the RCA's!

Your Price $134.99

Belva BPK0D Dual Amp 0/4-Gauge Wiring Kit

Enough wire for 2 amps! Don't forget the RCA's!

Your Price $59.99

NVX XBG3PK 1/0 Gauge OFC Big 3 Upgrade Kit

Comes with everything you need to upgrade your power and ground wire.

Your Price $79.99

Kicker Big 3 Package 1/0 Gauge Big 3 Upgrade Kit

Get all you need including wire cutters to upgrade your power and ground wire.

Your Price $149.99

Belva BBG3KT CCA 1/0 Gauge Big Three Kit

Features everything needed to upgrade factory power and ground wire.

Your Price $39.99

StreetWires FB0

1/0 Gauge Firewall Bushing

Your Price $6.95

Stinger Gauge Reducer (0/1 AWG to 4 AWG)

Chrome gauge reducer allows 0/1 AWG cable to fit in 4 AWG inputs

Your Price $7.99

NVX XDBU4 - Top of the Line!

Distribution Block with Two 1/0 or 4 AWG Inputs and Four 4 or 8 AWG Outputs

Your Price $17.99

Professional Installation for your Car Power Amplifier

Covers labor charges through our professional installer network.

Your Price $89.99

NVX XIV25 V-Series 2-Channel RCA Cable

16.4 ft of V-Series 2-Channel RCA Audio Premium Interconnect Cable with Dual Twisted Pair Hyper-Flex Technology

Your Price $11.99

NVX XIX25 X-Series RCA Interconnect Cable

16.4 ft. of 4-Channel X-Series RCA Cable with Dual Twisted Pair Hyper-Flex Technology

Your Price $26.99

NVX XWS1225 12 AWG Speaker Wire

25 ft. of True 12 Gauge 100% Copper EnvyFlex Speaker Cable/Wire

Your Price $39.99

NVX XWS1625 16 AWG Speaker Wire

25 ft. of True 16 Gauge 100% Copper EnvyFlex Speaker Cable/Wire

Your Price $13.99

Belva BBSW127 12 AWG Speaker Wire

12 Gauge 7 Meter (23 Ft) Speaker Wire (CCA)

Your Price $14.99

Belva BBSW167 16 AWG Speaker Wire

16 Gauge 7 Meter (23 Ft) Speaker Wire (CCA)

Your Price $12.99

Scosche SPL Meter SPL1000F

Handheld boomSTICK measures your SPL range from 60 to 135 dB

Your Price $21.99

AutoSound 2000 CD-102

High Frequency Test CD specifically designed for the set-up and evaluation of sound system imaging and placement.

Your Price $11.99

AutoSound 2000 CD-104

Audiophile reference series test disc for evaluation of all audio components.

Your Price $11.99

Product Summary

Manufacturer

Model Number

PH4000D

UPC

791489112185

Weight

13.00lbs

Internal SKU

ph4000d

Internal Product ID

22653

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Boss PH4000D