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BOSS Audio Systems R1004 400 W 4 Ch Car Amplifier - 2-8 Ohm, Integrated Circuit

(13597)

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US $59.99

List price US $80.99 (26% off)

or 4 interest-free payments of $15.00 available with

Condition:

New

Quantity:

Out of Stock827 sold

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Free 2-4 day delivery

Get it between Tue, Oct 7 and Thu, Oct 9 to 94104.

Located in: Oxnard, California, United States

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30 days returns. Seller pays for return shipping.

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eBay item number:284196868781

Last updated on Jul 23, 2025 09:04:02 PDTView all revisionsView all revisions

Item specifics

Condition: New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is ... New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is applicable). Packaging should be the same as what is found in a retail store, unless the item is handmade or was packaged by the manufacturer in non-retail packaging, such as an unprinted box or plastic bag. See the seller's listing for full details. See all condition definitionsopens in a new window or tab

UPC: 0791489115254

Brand: BOSS Audio

Model: R1004

MPN: R1004

RMS Power: 400W

Channels: 4

About this product

Product Identifiers

Brand

BOSS Audio

MPN

R1004

UPC

0791489115254

Model

R1004

eBay Product ID (ePID)

112062167

Product Key Features

RMS Power

400W

Channels

4

Additional Product Features

Amplifier Type

Multi Channels

Bridgeable

Not Bridgable

3 Way Ready

No

Brand Site

Http:/Www.Bossaudio.Com/Auto/R1004/

Frequency Response

12Hz-0.022Hz

MOSFET Circuitry

Yes

Item description from the seller

About this seller

Joined Jun 2019

Speece, Inc. is committed to providing a vast selection of excellent products and superior service to our valued customers. We strive to provide the best possible customer experience in all of our ...

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Detailed seller ratings

Average for the last 12 months

Accurate description

4.9

Reasonable shipping cost

5.0

Shipping speed

5.0

Communication

5.0

Seller feedback (14,856)

This item (154)

All items (14,856)

7***_ (282)- Feedback left by buyer.
Past 6 months
Verified purchase
Fast shipping, great packaging, easy install and works perfectly, great s ok und for the price.
5***5 (17)- Feedback left by buyer.
Past 6 months
Verified purchase
Quality product works as it is supposed to
g***8 (75)- Feedback left by buyer.
Past 6 months
Verified purchase
Great for small cars

See all feedback

Product ratings and reviews

4.2

144 product ratings

90 users rated this 5 out of 5 stars
30 users rated this 4 out of 5 stars
6 users rated this 3 out of 5 stars
4 users rated this 2 out of 5 stars
14 users rated this 1 out of 5 stars

Good sound quality

Good value

Small form factor

Most relevant reviews

See all 104 reviews

by xrilander
Apr 21, 2021Top favorable review
Works just fine with 2v preouts.
Like others have described, engine whine is an issue with this unit. I added 2-20 amp RCA ground loop isolators to fix the issue (an additional $20). I`m using all 4 channels (no sub) to power 4 Blaupunkt 4 way 6x8`s (4ohm) in my 2005 Taurus. New 14 gauge speaker wire throughout, with 10 gauge power/ground wires. Amp is mounted under the passenger side seat, runs cool at any volume. Head unit is a 2010 Pioneer DEH 5300HD with 2v pre out voltage. Gain is set to 3/4, and there is no distortion, even with the 2v pre outs. Strong bass, crisp highs. Terrific bargain unit! Like others have described, engine whine is an issue with this unit. I added 2-20 amp RCA ground loop isolators to fix the issue (an additional $20). I`m using all 4 channels (no sub) to power 4 Blaupunkt 4 way 6x8`s (4ohm) in my 2005 Taurus. New 14 gauge speaker wire throughout, with 10 gauge power/ground wires. Amp is mounted under the passenger side seat, runs cool at any volume. Head unit is a 2010 Pioneer DEH 5300HD with 2v pre out voltage. Gain is set to 3/4, and there is no distortion, even with the 2v pre outs. Strong bass, crisp highs. Terrific bargain unit!
Verified purchase: YesCondition: NewSold by: speeceinc
by 2wheelsrenuf
Aug 27, 2017Top critical review
Sounds great, if your car is not running...
I got this all installed and it sounded great. Easy to install even using the high level inputs. However the trouble began as soon as I started the car. I could hear (loudly) everything the car was doing electrically. Radiator fan, alternator, ignition, power windows, turn signals, everything. I went through all of the usual grounding checks and even went so far as to ground the amp, head unit, and antenna to the battery. Nothing helped. I'll be looking for a new amp. Anyone want to buy a Boss R1004 with less than an hour of run time on it!?!?I got this all installed and it sounded great. Easy to install even using the high level inputs. However the trouble began as soon as I started the car. I could hear (loudly) everything the car was doing electrically. Radiator fan, alternator, ignition, power windows, turn signals, everything. I went through all of the usual grounding checks and even went so far as to ground the amp, head unit, and antenna to the battery. Nothing helped. I'll be looking for a new amp. Anyone want to buy a Boss R1004 with less than an hour of run time on it!?!?
Verified purchase: YesCondition: NewSold by: fanteller
by savedbygrace1684_2
Dec 29, 2017
Excellent
This may be a cheap amp with zero crossovers but it is an excellent entry level amp if you understand frequency responses and such. I measured this amp on a dyno and at 13.9v and 4v into the low level preouts I am getting 41 watts by 4 at 4ohms with the gain at 3/4. THD is 0.01 at 3/4 gain and S/N Ratio is a true 96db at 1 watt. That is fantastic specs for such a cheap amplifier. Highly recommend if you're looking for a little extra power on a small system. I'm using this amp to run 6 1/2. two ways and 6x9 3 ways. Very loud and clean. Just don't expect clean signal much passed 3/4 gain. That's the distortion threshold. If your headunit only has 2v preouts, don't bother getting this amp because without clean audio voltage it will distort at less than half gain. Hope this helps. I'm a ... This may be a cheap amp with zero crossovers but it is an excellent entry level amp if you understand frequency responses and such. I measured this amp on a dyno and at 13.9v and 4v into the low level preouts I am getting 41 watts by 4 at 4ohms with the gain at 3/4. THD is 0.01 at 3/4 gain and S/N Ratio is a true 96db at 1 watt. That is fantastic specs for such a cheap amplifier. Highly recommend if you're looking for a little extra power on a small system. I'm using this amp to run 6 1/2. two ways and 6x9 3 ways. Very loud and clean. Just don't expect clean signal much passed 3/4 gain. That's the distortion threshold. If your headunit only has 2v preouts, don't bother getting this amp because without clean audio voltage it will distort at less than half gain. Hope this helps. I'm a sound engineer and own my own stereo shop so I understand the specs.
Verified purchase: YesCondition: NewSold by: pricepounders
by czfIKQNNTl-@Deleted
Aug 10, 2016
Great amplifier love it (not for high powered speakers)
This is a great amplifier if you are looking for some little things.....like i powered my bullet tweeters and front 6s.. Although had problems with engine noises but got rid of it, really happy how my car audio sound more great than before love it
Verified purchase: YesCondition: NewSold by: spreetail
by tw5tdfeatr5
Nov 12, 2018
4 channel Boss Riot 400 watt amp
I bought it on ebay. It's not the sellers fault it was a brand new Boss 4 Channel Amp that cost $35 I wasn't expecting window shattering music. I was however expecting to be able to listen to music louder than my pioneer stereo puts out. I hooked up the amp with the truck off it sounded great I was very shortly excited. As soon as I started the truck with no music playing the horrible noise this amp doesn't filter out is unbelievable for an amp made in 2018. I have been installing systems for years and knew I was buying literally the cheapest not from walmart amp I could. I regret not spending a few extra $$ and buying a good 4 channel amp. I immediately took it out of the truck and I am in search of a good cea compliant amp. You get what you pay for. I bought it on ebay. It's not the sellers fault it was a brand new Boss 4 Channel Amp that cost $35 I wasn't expecting window shattering music. I was however expecting to be able to listen to music louder than my pioneer stereo puts out. I hooked up the amp with the truck off it sounded great I was very shortly excited. As soon as I started the truck with no music playing the horrible noise this amp doesn't filter out is unbelievable for an amp made in 2018. I have been installing systems for years and knew I was buying literally the cheapest not from walmart amp I could. I regret not spending a few extra $$ and buying a good 4 channel amp. I immediately took it out of the truck and I am in search of a good cea compliant amp. You get what you pay for.
Verified purchase: YesCondition: NewSold by: 0ib42jvgs9w@deleted

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