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Autotek SMA1100.4

1100W 4-Channel Street Machine (SMA) Series Amplifier

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List price $149.99

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Autotek SMA1100.4

1100W 4-Channel Street Machine (SMA) Series Amplifier

$59.99

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Belva BAK44 4-Channel 4 Gauge Amplifier Installation Kit

Complete 4-Channel CCA 4 Gauge Amp Kit with RCA Cables and Speaker Wire

$29.99

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NVX Universal Remote Level Bass Control

Controls bass level and frequency via RCA/Interconnect connectors on any amp.

$7.99

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NVX XFLOC4

4-Channel Line Output Converter with Digital Noise Filter + Line Driver

$14.99

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Bundles with this Product

Save 50% on a 4 Gauge Amp Kit with Purchase!

You will need an amp kit to install your amp, and the TruConnex TC4KIT-44B by Metra is the perfect kit for this amp. For a limited time, when you click "Add Both to Cart", you'll receive 50% off the amp kit. This offer cannot be combined with any other coupons or offers.

15.00

94857

291

Autotek SMA1100.4

$59.99

+

50% OFF

TruConnex TC4KIT-44B by Metra

$29.99

Special Price $14.99 ($29.99 if purchased separately)

TruConnex TC4KIT-44B by Metra

• 4 Gauge Power Amplifier Installation Kit
• Ideal for Systems Up to 900 Watts
• Premium Power and Ground Wire Provides Optimal Power Transfer
• 4-Channel Twisted RCA Cables

50% off an 8 Gauge Amp Kit with Select Amplifiers Purchase!

Need a wiring kit to install your amp? The TruConnex TC4KIT-84B is your answer. For a limited time, when you click "Add Both to Cart", get 50% off the amp kit. You may still need Speaker Wire, so make sure to check that out too!

12.00

94857

1215

Autotek SMA1100.4

$59.99

+

50% OFF

TruConnex TC4KIT-84B by Metra

$23.99

Special Price $11.99 ($23.99 if purchased separately)

TruConnex TC4KIT-84B by Metra

• 8 Gauge Power Amplifier Installation Kit
• Ideal for Systems Up to 450 Watts
• Premium Power and Ground Wire Provides Optimal Power Transfer
• 4-Channel Twisted RCA Cables

(Offer 1 of 2)

Combined Total Price

$74.98

You Save $15.00

Autotek Audio Store

General Features:

  • Street Machine Series 4-Channel Amplifier
  • Max Power Rating:
    • 4 ohms: 150 watts x 4 chan.
    • 2 ohms: 275 watts x 4 chan.
    • Bridged, 4 ohms: 550 watts x 2 chan.
  • Max power output: 1100W
  • Pulse Width Modulated MOSFET power supply
  • LED power (green) and protect (red) indicators
  • 4/2 channel operation
  • Preamp RCA outputs to daisy chain multiple amps
  • 3-way protection circuitry (thermal, overload, and speaker short protection)
  • High-density split-dome convection heat-sink for extreme heat dissipation
  • Gold plated spade terminal wire connections
  • Input sensitivity: 200mV - 6V
  • Variable Bass Boost: 0 to +9 dB bass boost
  • Selectable Crossover: Full/HPF/LPF
  • Variable high-pass filter: 60 - 1200 Hz
  • Variable low-pass filter: 30 - 250 Hz
  • Fuse Rating: 10A x 2
  • 8 gauge power and ground wiring is recommended for installation. Contact us for information regarding a discount on select amplifier kits from our website when purchased together with this amplifier.
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Power Specifications - Full Range Channels

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 speakers or subwoofers 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.

150 watts x 4 channels
RMS Power @ 2 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 speakers or subwoofers equals 2 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.

275 watts x 4 channels
Bridged RMS Power

Bridging refers to combining two channels on an amplifier to create one channel with double the voltage and an increased power output. A 2-channel amplifier will bridge down to 1-channel and a 4-channel amplifier can bridge to create 2-channels. An amplifier is most commonly bridged to drive a subwoofer.

Remember, once you bridge two channels down to one its final impedance will be 4 ohms unless otherwise specified. This rating lists the RMS power created once an amplifier is bridged.

550 watts x 2 channels

Power Specifications - Full Range Channels

Peak Power @ 4 ohms
This form of power rating refers to the maximum amount of power an electronic device can handle or output in an instant without damage occurring. 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. However, some manufacture's do not provide an RMS figure and therefore one cannot be advertised.

150 watts x 4 channels
Peak Power @ 2 ohms
This form of power rating refers to the maximum amount of power an electronic device can handle or output in an instant without damage occurring. 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. However, some manufacture's do not provide an RMS figure and therefore one cannot be advertised.

275 watts x 4 channels
Bridged Peak/Max Power

Bridging refers to combining two channels on an amplifier to create one channel with double the voltage and an increased power output. A 2-channel amplifier will bridge down to 1-channel and a 4-channel amplifier can bridge to create 2-channels. An amplifier is most commonly bridged to drive a subwoofer.

Remember, once you bridge two channels down to one its final impedance will be 4 ohms unless otherwise specified. This rating lists the Peak/Max power created once an amplifier is bridged.

550 watts x 2 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.
Salt Water (Audiopipe)
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.
4
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.

1100 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.
Any Gauge with use of Spade Terminal 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.
4 ohms
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.
No
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)
High-Pass (HP)
Full (AP)
High-Pass Crossover Frequency
The high-pass crossover frequency can be a fixed crossover point or a variable crossover range. A variable high-pass crossover allows you to select a specific crossover point which allows frequencies above the set crossover point to pass, while making frequencies below 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.

60 - 1200 Hz
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.

30 - 250 Hz
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 - 9 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.
No
Fuse Rating
The amperage and the number of fuse(s) an amp requires.
10A x 2 
Strappable
Some amplifiers can be "strapped" together in order to increase the output of a single audio channel. These amplifiers feature RCA preamp outputs, allowing you to pass the signal directly from one amp to the other to ensure consistency.
No
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
Sonic Certified Amplifier
Sonic Certified amplifiers have been tested by the experts at Sonic Electronix to meet or exceed the wattage ratings provided by the manufacturer. If this is marked as Yes, then you can trust the wattage ratings. If marked as No, then we have tested the amplifier and it did not meet the advertised wattage ratings. If marked as Not Tested, then the Sonic Electronix experts have not yet been able to test the amp.
Not Tested
Hi-Res Audio Compatible
This feature refers to if the product is capable of Hi-Res Audio (HRA) playback.

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
67%
4 Star
33%
3 Star
0%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.3
Value
5.0
Features
4.7
Design
4.7
Usability
4.3
Smith

K.C.MO

Overall
Durability
Value
Features
Design
Usability
The price is right

October 24, 2016

I needed a 4 channel amp to upgrade my system but didn't want to spend a ton of $$ so I purchased the Autotek. One of the main reasons I bought this amp was because it had the preouts that allow me to run another amp for my subs. Not the most powerful amp I have had but for the price, it'll do!

0 of 0 found this helpful

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Kt

Littleton co

Overall
Durability
Value
Features
Design
Usability
Fuckin kick ass 4 channel amp!!!?

October 14, 2016

I use it power my 4 Alpine door speakers in my 99 Rav4 and it's loud and performs very well. No static no distortion no bullshit.

0 of 0 found this helpful

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billy

Bethune, SC

Overall
Durability
Value
Features
Design
Usability
great product

June 9, 2016

Great amp i use it to run my mids and highs and it does an awesome job

0 of 0 found this helpful

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Browse 2 questions and 4 answers
Hide answersShow all answers | Sort by
Why did you choose this?
Sonic Electronix Store
price was good, unit has rca outputs
Timothy S on Sep 20, 2016
Needed an inexpensive and somewhat compact amp to overcome wind noise in a Jeep.
Gregory B on Dec 1, 2015
cheap and efficient for car speakers I assume.
saul t on Jun 30, 2016
will this run 2 6x9s and a sub?
A shopper on Jul 12, 2016
Best Answer: Yes it will
Reply · Report · David h on Jul 12, 2016
· Add Answer · I Have This Question Too (0)

Product Summary

Manufacturer

Model Number

SMA1100.4

UPC

806576224334

Weight

5.80lbs

Internal SKU

sma11004

Internal Product ID

94857

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: Autotek SMA1100.4