Precision Power (PPI) i640.5

Great little AMP

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.

Great Amp for the Money

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

Great amp for the money!

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.

Beautiful

This item came to Grenada in about 7 days.(impressive) I was a bit surprised at how small it is and i did not expect much.paired with the existing factory speakers,pioneer TSW261 D4 sub and mini tweeters,the result is mind blowing .The sub channel is very powerful.My music is sweet and clean.
Anyone wanting to run a small, nice sounding ,inexpensive system from a single amp this is the one.

nice amp

worth every penny ! lots of power in a small package! would buy another one!

By Anonymous on September 16, 2018 Verified purchase