I have for sale 2 Precision Power amplifiers from the the mid/late 90's. 1 Model A404 (50 Watts x 4 @ 4 Ohm, 100 Watts x 4 @ 2 Ohm) and 1 Model A204 (25 Watts x 4 @ 4 Ohm, 50 Watts x4 @ 2 Ohm). Both are in excellent mechanical/electrical condition. The large amp (A404) has a few cosmetic scratches on the finless shroud but the smaller amp (A204) is flawless. They are white with silkscreened art work. Some of you guys will probably remember that these amps were amongst the best in their time, often used in competitive grade audio systems. PPI was known to have conservatively rated their amplifiers, their power output ratings are actually continuous and not peak level.

These amps came from my brother's BMW (which he just sold) and were an integral part of a well tuned system using Alpine head unit, MB Quart separates, and JL Audio woofers. He went for clean and tight sound, rather than for boom.

I am asking $200 OBO + actual shipping for the larger amp and $100 OBO + actual shipping for the smaller amp. If you're in the greater Los Angeles area, you are more than welcome to check them out. As mentioned before, the amps are in excellent working condition, only the larger amp has some scratches on the shroud. I am also willing to sell separately. Please email me at wallstnerd2@yahoo.com for scans.

Thanks, Joe

P.S. Here's a post that I found on the honda/acura website which does a good job describing these amps.

" If you want to learn more about them, then you should seach under Art Series, or look for info on A600's, A404's, A300's or A1200's - they are far more common then an Ax400. If you need the owner's manuals, I have them. Let me give you and others looking at this a brief history of these amps. The art series is really what gave PPI it's reputation and built the brand to what it was a few years ago as being one of the premier Car Audio manufacturers around. These amps were produced from around 1994-1997. Take a look at any car audio magazine from this era, and you will find the following combo in many of the winning cars - MBQuart comps, Audio Control processors, Alpine head's, JL subs......and you guessed it Art Series amps. The Art lineup is about the third lineup of amps produced by PPI that I know of. It started with the A line, then the AM line-up IIRC. The Art lineup followed next, and are almost legendary. These amps have a very unique heat sink design, and each amplifer model had custom art work applied to them. They came in two colors, White and Black. The white amplifiers had colorful, custom silk screened graphics on them - each were hand drawn by an artist - and each model has artwork unique to itself. The black amplifiers had a matte finish with the circuit/component layout silkscreened on the amplifier in gloss black. These amps also featured a nicely regulated power supply that would keep output constant between 11 and 15V. The nomeclature on the amps is consistant with RMS output - not the overrated - only if it's hit by lightning it makes this power naming style that is so popular now. Therefore, an A600 is 600w x 1 @ 4 ohm mono, or 150x2 @ 4 ohm stereo - and so forth. Power, as FoxSi alluded to is underrated. PPI only included crossovers on two amplifiers from this era - the Ax606 and the Ax400. The Ax606 was 50 x 6 at 4 ohm mono, but the last two channels were optimized for 1 ohm stereo operation. It also included a FRX-456 in the chassis for a fully electronic crossover that you could bandpass - if you want a system amp that will run it all - this is the ticket. The Ax400 is a 50 x 4 amp and the crossover is controlled by some switches on the bottom of the amp.
These amps were built like tanks! A testament to that fact is that out of the 10 that I purchased from different sources on the internet - all 10 work flawlessly!!! Despite the fact that some have seen better days, they still work like new and sound beautiful! These amps were built back when craftsmanship meant something to manufactureres. You will find some A series that included custom colored silkscreening from the factory (call up most MFG's and ask for that now...) and there was even a water cooling option!! This amps simply won't disappoint, and are really a part of car audio history!"