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Precision Power PPI i350.2

350W RMS 2-Channel iON Series Class D Full-Range Digital Stereo Bridgeable Amplifier (i3502)

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Precision Power PPI i350.2

350W RMS 2-Channel iON Series Class D Full-Range Digital Stereo Bridgeable Amplifier (i3502)

$94.99

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General Features:

  • iON Series 2-Channel Class D Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 115 watts x 2 chan.
    • 2 ohms: 175 watts x 2 chan.
    • Bridged, 4 ohms: 350 watts x 1 chan.
  • Pulse Width Modulated MOSFET power supply
  • Low-Heat producing circuit
  • Wired remote bass level control included
  • LED power (green) and protect (red) indicators
  • Balanced signal input
  • Double sided FR-4 PC board
  • Variable Bass Boost (0 to +12 dB bass boost at 45 Hz)
  • SMT (Surface Mount Technology) for easy installation
  • Soft start turn-on
  • 2 or Mono channel operation
  • Speaker-level (high-level) inputs
  • 3-way protection circuitry (thermal, overload, and speaker short protection)
  • Heavy duty aluminum alloy heat-sink
  • Input sensitivity:
    • Level: 200mV-6V
  • Variable high-pass filter (35-250 Hz, 12 dB/octave)
  • Variable low-pass filter (35-250 Hz, 12 dB/octave)
  • 8 gauge power and ground wiring is required for installation. Contact us for information regarding a discount on select amplifier kits from our website when purchased together with this amplifier.
  • Dimensions: 5-5/16"W x 5-1/2"L x 1-11/16"H
  • 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.

115 watts x 2 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.

175 watts x 2 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.

350 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.
iON (Precision Power)
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.
2
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.

350 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.
4 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
THD at Rated RMS Power
The amount of change in harmonic content of the signal as it is amplified. A lower figure indicates less change and a more accurate amp. THD below 0.10% is inaudible.
0.5%
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.
No
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)
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.

35 - 250 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.

35 - 250 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.
70 dB
Channel Separation
Also referred to as crosstalk. The amount of interference on one stereo channel caused by the leaking of the other stereo channel. The higher the rating in decibels (dB), the better the Channel Separation.
55 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 - 12 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.
20A 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
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
71%
4 Star
14%
3 Star
0%
2 Star
14%
1 Star
0%

Average Attribution Rating

Durability
4.1
Value
4.3
Features
4.6
Design
4.4
Usability
4.6
Bobby

Sanford, FL

Overall
Durability
Value
Features
Design
Usability
Precision Power - Clean and Loud Music

February 17, 2014

I have 2 precision power amplifiers now, and if I had to buy another amp it would be a precision power. Highly recommend them. You get quite a bit for you money. Excellent value getting clean RMS watts for your dollars. I used this amp running in 2ohm at 2 channels, set the gain to the proper voltage and it runs my jeep speakers front and back on the 2 channels. One for the front one for the back. 2ohms sounds just as good as other 4ohm amps I have used, yet you get more watts to the speakers running in 2ohms. Nice size, fits in the glove box. No noise. Reliable. Loud and Clear. Pushes 2 kicker 4x6 and a premium sound bar. All needing 50 watts RMS, this amp delivers.

20 of 24 found this helpful

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Ignacio

Orange country, ca

Overall
Durability
Value
Features
Design
Usability
Great product... Great bang for your buck...

May 5, 2014

I love this amp it may be small but it has a lot of power. If anyone is looking for a amp and not break the bank I would recommend this one, pros I like about it it's small so I can hide /fits any where for installs. I have no cons for it.

17 of 20 found this helpful

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Nay

virginia

Overall
Durability
Value
Features
Design
Usability
small but very powerful

May 10, 2015

I just had the amp installed this past week and as I stated it is small but very powerful. I'm enjoying it already.

15 of 17 found this helpful

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Christian

Reading, PA

Verified Purchase
Overall
Durability
Value
Features
Design
Usability
Specs are not accurate

May 3, 2015

I ordered this amp because of the small size, because it accepts balanced inputs, and because of it bridged rating of 350W at 4 ohm. I ran this to two, earthquake sound R8SWS (150 w each) wired in parallel (each speaker is 2 ohm) for a 4 ohm load. When I first hooked it up, I actually had to call customer support because NO sound could be heard at minimal gain. Then, I cranked the gain to 3/4 just to get enough energy to push the SWS's. With that much gain, the distortion was terrible. I know its not the SWS's because I have had them bridged to a channel on my JL Audio 600/6v2 (200W @ 4ohm) and the SX+WS's performed much better. Be wary of the ratings of this amp. I ended up returning it.

12 of 15 found this helpful

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Bill

Knoxville, TN

Overall
Durability
Value
Features
Design
Usability
Lotta power for the $$$

June 5, 2015

Love this little amp. Yes, it is surprising small, but fully pushes 2x Alpine SPR-60's.

9 of 11 found this helpful

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Wayne

APEX, NC

Overall
Durability
Value
Features
Design
Usability
Parallel or Series?

July 12, 2015

If you had them in wired in parallel, you had 1ohm which is just about a short. Too bad it didn't work out for you. My practice is to lay it out and wire it up before installing it when there is a possibility of creating my own problems. Just a thought.
(This is a reply to the unhappy customer above).

Regards

6 of 8 found this helpful

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NT

nowhereville, US

Overall
Durability
Value
Features
Design
Usability
dude

November 23, 2015

To the review above, if you wired 2 2-ohm speakers in parallel it would reduce the impedance of your load to 1-ohm not 4. Think you were looking for a series circuit there bud, no wonder it didn't work out for you.

0 of 0 found this helpful

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Browse 2 questions and 9 answers
Hide answersShow all answers | Sort by
Why did you choose this?
Sonic Electronix Store
bass level control and power range to suit pair of mtx tn12-02
Joseph D on Sep 30, 2016
Read the reviews and they were good so I decided to purchase with this amp to go with my speaker
Rene W on Apr 8, 2015
Quality name that is highly recommended, and it fits my needs for this install.
Robert M on Apr 30, 2015
small package with all the features remote level control , speaker level with power turn on what's not to like
richard b on Mar 9, 2015
On the power input end of this amp, there are two lugs labled "REM IN," and "REM OUT." There is also a modular phone type plug on the other end labeled, "REM," which matches the plug on the supplied Remote Control knob. So what are the "REM IN" and "REM OUT" lugs for?
N 2 Krawln on Aug 1, 2016
Best Answer: The Rem In is where you run the remote wire (typically a blue wire) that allows the amp to sense when it should power itself on and off. Most head units provide the remote wire coming off of their wiring harness.

Rem Out lets you daisy chain another device after the amp that also needs a wire to signal when it should switch on and off. (Perhaps a second amp?)
Reply · Report · Tom W on Aug 2, 2016
· Add Answer · I Have This Question Too (0)

Product Summary

Manufacturer

Model Number

i350.2

UPC

709483044371

Weight

3.45lbs

Internal SKU

i3502

Internal Product ID

68787

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: Precision Power PPI i350.2

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