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Precision Power PPI i640.5

640W RMS 5-Channel iON Series Class D Full-Range Digital Stereo Bridgeable Amplifier

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List price $219.95

$139.00

with warranty

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General Features:

  • iON Series 5-Channel Class D Car Amplifier
  • Channel 1-4 RMS Power Rating:
    • 4 ohms: 60 watts x 4 chan.
    • 2 ohms: 80 watts x 4 chan.
  • Subwoofer Channel RMS Power Rating:
    • 4 ohms: 200 watts x 1 chan.
    • 2 ohms: 350 watts x 1 chan.
  • Low-Heat producing circuit
  • Balanced signal input
  • Double sided FR-4 PC board
  • Variable Bass Boost (0 to +12 dB bass boost)
  • SMT (Surface Mount Technology) for easy installation
  • Soft start turn-on
  • 5/4/3/2 or Mono channel operation
  • 3-way protection circuitry (thermal, overload, and speaker short protection)
  • Input sensitivity:
    • Level: 200mV-6V
  • 4 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 10-5/16"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.

60 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.

80 watts x 4 channels

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.
200 watts x 1 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 speaker(s) or subwoofer(s) 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. The 5th channel on these particular amplifiers are usually dedicated for driving subwoofers.
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.
5
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.

670 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
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
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)

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

Average Attribution Rating

Durability
4.0
Value
5.0
Features
4.0
Design
4.7
Usability
4.7

Jimme

New York, NY

Overall
Durability
Value
Features
Design
Usability

Great little AMP

June 12, 2014

This Amp is really worth every penny. It is incredibly small and i have it installed in my dash. It is also very powerful i have it powering Infinity Kappas and a 10 inch Kicker comp R in a ported box at 1 ohm. Yes the 5th channel is one ohm stable. This is a complete system amp for a decent audio build. I would definitely recommend.

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Justin

Lebanon, IN

Overall
Durability
Value
Features
Design
Usability

Great amp for the money!

April 20, 2014

I bought this amp for an audio upgrade that would not be seen in the Wife and I's 1991 Mazda MX-5. Sincewe drive the car on trips to see family out of state, the audio setup COULD NOT take any interior or trunk space. This amp fit the bill in multiple ways, It is obviously a full setup amp, it powers the door speakers (Polk Db650), headrest speakers (none installed currently), and rear deck mounted subwoofer (Sundown Audio SD2-8). The Polk's play so much louder and are more dynamic than they ever were off of the head unit, but I am sure part of that is having a high pass crossover set on the amp. I never had an amp for the Sundown, so I cannot say how powerful the sub channel is on this amp, but it does what I wanted it to, Add low end to the setup. After using this amp, and installing a PPI Sedona series 580.5 amp in my Mothers Trailblazer to replace the Bose amp. I am a big fan of PPI amps. The Sedona 5ch and JCV head unit helped out the stock Bose speakers in my moms Trailblazer A LOT... It obviously helped out the setup in my MX-5, but considering this is a Class D amp, I figured there would be a significant loss in quality of sound. It sounds cleaner than the Hifonics HFi 55.4 I have powering the Component set I have in my Bravada. I am now considering looking into PPI for the front stage in my Bravada. Now lets get to the size of this amp.... Since I could not take up ANY space in the MX-5, I had to find unused space... Behind the seats is the fuel tank, it sits in the middle of the car but there are two tunnels that run from the cabin to the trunk the amp is mounted in the passenger tunnel. I only needed 3ft of power wire, and 2ft of ground. (The subwoofer is mounted in the driver side, I had cut some metal out of the rear parcel shelf where the top folds down and have made a fiberglass enclosure so it was not ran free air, it sits below the level of the rear shelf so the top could be put down and the subwoofer would not hit it at full excursion. This amp was a great buy, our MX-5 build was a ton of fun. If you are not looking for a "Banging" system, get a sub with some cone area and a separate sub amp. If you want a decently rounded system to just listen too, this amp is great.

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Justin

Lebanon, IN

Overall
Durability
Value
Features
Design
Usability

Great Amp for the Money

April 1, 2014

I bought this amp to be used in a space saving install in a 91" MX-5, there are two tunnels that run front to back from the cabin and the trunk on both sides of the fuel tank, this amp fits in the passenger side just as if PPI designed it to fit in that spot. I wanted a single amplifier to power all of the speakers in the car, but I wanted a Class-D amp since it would require less of the electrical system (not a strong point of the car). This amp is currently powering a set of Polk DB 6 1/2 Coax in the doors, and a Sundown SD2-8 (currently in the trunk, but in a month or so it will be glassed flush with the rear deck). The amp does not sound any worse than my Hifonics Class A/B amp (I was worried SQ would suffer being Class-D). If you are curious, the sub channel is plenty powerful, you wont win any SPL competitions with this amps sub channel, but for daily listening it will be a great amp. I do have one small complaint about this amp..... If you look at the photos take a close look at where the power and ground are on the hookup blocks. I used Knu Konceptz CCA 8 gauge wire to hook up power and ground, I am not sure if their wire is a little "over sized" but when I put the power and ground wires in, I noticed not all of the wire wanted to fit and some of the power wire was being pushed down onto the ground wire screw. It took a little bit of work but I got it all in there. I just figured this would be something to point out. Other than that little thing, I am so far pleased with this little amp. I will not rate durability since it has only been installed for about 6 hours. But it seems it is forcing me to, I will just chose highest since it worked when I hooked it up. :D

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Accessory Tools and Products

Accessories added

NVX XKIT44 4-Gauge 4-Channel Wiring Kit

4-Channel 100% OFC Complete True 4 Gauge Amp Kit with RCA Cables and Speaker Wire

Your Price $99.99

T-Spec V8-4DAK 4-Channel 4-Gauge Wiring Kit

Get everything you need to hook up your new amplifier!

Your Price $89.95

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 FB4

4 AWG / 4 Gauge Firewall Bushing

Your Price $6.95

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

Stinger SI4617 4000 Series Interconnect Cable

17 ft. 6-Channel 4000 Series Audio Interconnect Cable

Your Price $41.99

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

SMD DD-1 Distortion Detector

Set the gain of an audio amplifier quickly and accurately

Your Price $149.99

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

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Product Summary

Manufacturer

Model Number

i640.5

UPC

709483047235

Weight

5.50lbs

Internal SKU

i6405

Internal Product ID

74145

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 i640.5

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