Name: Precision Power PPI PC640.4
Brand: Precision Power
SKU: pc6404
Price: 169.00 USD
Availability: Discontinued
Rating: 4.0000 (3 reviews)

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Precision Power PPI PC640.4 Image 7 — Precision Power PPI PC640.4

Product videos

Product highlights

• 4 ohm: 115 watts x 4 chan, 2 ohm: 160 watts x 4 chan
• 640W RMS
• Large TO218 MOSFET Transistors
• Triple Darlington Audio Output Stages
• Close Tolerance Signal Path Components
• Extra Low Current Drive Stage

Learn more about the pc6404

Product Highlights

Description

Authorized dealer

Power Class Series 4-Channel Class A/B Car Amplifier
RMS Power Rating:
- 4 ohm: 115 watts x 4 chan.
- 2 ohm: 160 watts x 4 chan.
- Bridged, 4 ohm: 320 watts x 2 chan.
Individually regulated preamp/crossover power supplies ensure signal purity
Low ESR capacitance banks compensate power supply ripple currents
Extra low current drive stage increases efficiency and sound clarity
Large TO218 MOSFET Transistors
Full signal path low noise/distortion circuitry topology
Wired remote bass level control included
LED power (green) and protect (red) indicators
Variable Bass Boost (0 to +12 dB bass boost at 30-90 Hz)
4/3/2 Channel operation
Differential drives divide pre-amp and power-amp stages, eliminating ground looping
Close tolerance signal path components - 1% resistors and 5% capacitors
Sequenced delays eliminate residual power-up/power-down pops
Differential RCA inputs isolate 12V/audio to ground
Triple Darlington audio output stages
2 Oz. Copper traces transfer high volume internal current
3-Way System Protection circuitry (thermal, overload, and speaker short protection)
Separate capacitor charging/discharging current paths prevent rail switching spikes and ground traces from entering signal stages
Heavy duty aluminum alloy heatsink for extreme heat dissipation
Nickel-plated RCA level inputs
Gold-plated screw terminals
Input sensitivity:
- Level: 200mV-9V
Variable high-pass filter (15-4,000 Hz, 12 dB/octave)
Variable low-pass filter (50-4,000 Hz, 12 dB/octave)
Damping factor (100Hz @ 4 Ohm): >3000
Frequency response: 15-50,000 Hz
Dimensions: 17-1/4"L x 10"W x 2-5/16"H
4-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.
Authorized Internet Dealer
1-year Manufacturer's warranty

Specifications & Details

Power Specifications - Full Range Channels

RMS Power @ 4 ohms

115 watts x 4 channel

RMS Power @ 2 ohms

160 watts x 4 channel

RMS Power @ 1 ohm

Not Stable

Bridged RMS Power

320 watts x 2 channel

Amplifier Specifications

Series

Power Class Series

Amplifier Class

A/B

Number of Channels

4-Channel

Total RMS Power Output

640 watts

Maximum Input Gauge Size

4 AWG

Minimum Impedance Unbridged

2 ohm

Minimum Impedance Bridged

4 ohms

THD at Rated RMS Power

0.02%

Speaker Level Inputs

Preamp Outputs

Built-in Crossover

Low-Pass (LP)
High-Pass (HP)

High-Pass Crossover Frequency

15 - 4,000 Hz

Low-Pass Crossover Frequency

50 - 4,000 Hz

Signal-to-Noise Ratio

102 dB

Bass Boost

0 - 12 dB

Remote bass/level controller

Fuse Rating

80A x 1

Warranty and Return Policy

Parts Warranty Duration

1 year

Labor Warranty Duration

1 year

Warranty Provider

Manufacturer

Customer Ratings & Reviews

Precision Power PPI PC640.4 thumbnail image

Overall rating distribution

5 star		33%
4 star		33%
3 star		33%
2 star		0%
1 star		0%

Filter by Star Rating

Show only Verified Purchases

By feature average rating

Durability		2.7
Value		4
Features		4
Design		3.4
Usability		3.4

Customer Reviews

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You decide!

The Precision Power Amp is 1 of 3 I use in my outdoor system. JBL and JL Audio are the other 2. After about 6 months and about 36 hours of use the PPI unit went bad after sitting powered up (along with the other 2) for one hour, no music playing. I had to pay to send it in and provide a $20 money order to have it shipped back. Since I have not received it back yet and not had the chance to use it for a reasonable amount of time I'm not very confident of it's value. I have been told the older Amps from this company were much better. Meantime I've recplaced it with a Rockford Fosgate which I'm very happy with. I am 65 and very experienced with audio systems.

By jlaw99 on October 12, 2012

6 found this helpful

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Great sound quality amp

Let's start this out, I have never owned an old school PPI, so I can't compare the differences. But what I do know? Is this is supposed to be their top of the line? The amp is large and has a little weight to it, as expected. The amp does sound great and has some power. Haven't clamped, but I would imagine right around the numbers it claims. It really does sound great for the price. I can't think of anything better for the price if you're buying new. It can be run active, which is nice. Seems like many amps can these days.

Now for the bad: I can't stand the connector pieces to wire everything together. They are very difficult to work with, and when inserting them into the amp it is a bit difficult and seems as if you could break something. Next, the amp gets extremely hot. Even in a well ventilated area. If you commute a long way every day, it will need a fan. Or simply just get something else instead. Because when pushed hard and long it will go into protect
It's sad to know it does that. Just like sound streams amps. Such a great product to have that happen with.

The whole damping factor and all that. Pretty much pointless from my understanding as to what it should mean when pushing subs.

Overall, a great amp that does sound great, just some issues that need to be worked out, but probably never will.

By Bob on July 17, 2012

6 found this helpful

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A very good try!!

I bought 4 PPI amps in 1991 (Art Series) and wish I would have held on to them. But for the money that they sell for today, you can't go wrong with this amp.

By Old Man Audio on February 21, 2012

5 found this helpful

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Add-ons

Belva BAK44

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

(61)

$49.99

List price $79.99

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Precision Power PPI PC640.4

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This item has been discontinued

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