Recent content by PPI_GUY

I'd look at the JL Audio RD400.4 or the XD400/4 amps. The main difference is the RD amps are unregulated. Lots of good reviews of them out there as well. .

They are indeed class D amps. However, the problems that have long been associated with class D topology are greatly diminished with Gallium Nitride FET's. Efficiency increases, distortion is reduced and the signal is purer. The application for this new technology won't stop with audiophile...

The fact is GaN FET amplifiers are coming. They'll become more common in home audio first and then make their way to car audio. 90% efficient car amplifiers do not exist AFAIK. You may get the occasional well thought out amp that is 80% efficient @ 4 ohm loads. But, with GaN FET's we're talking...

Some home audio manufacturers are already incorporating them. I think Taramps may have released a car audio model using the GaN FET technology a year ago. Article was posted in late 2017 and says it may take a few years for consumers to start seeing them make their way to the market. You'll...

BTW, here's a good read on the significance of GaN FET and how it will  ultimately allow class D to equal or possibly surpass even class A amplifiers. https://audiophilereview.com/cd-dac-digital/why-well-soon-be-living-in-a-class-d-world.html

That's my biggest question with Bernie's amps. There's no doubt he's building very high quality stuff but, the future isn't with class a/b. It's going to be with super efficient class D amps utilizing GaN FET IC technology that will rival the highest level marquee SQ amps currently available...

Yeah, he may have been involved with the early PPI's but, Bruce McMillian was the guy who headed up the design side of PPI from the early 90's till late 90's. A updated version of his R.I.P.S. technology found in the 2350DM amps would eventually make its way into JL Audio's "slash" series when...

Bernie was behind the Orion HCCA amps. He didn't have anything to do with the "Art" series PPI amps.

Nothing wrong with Xtant but, they are no longer in business...at least at the level they once were. So, if you are using 90's or early 2000's models you may have some maintenance work to do on them. Certainly some of the best amps at the time they were new though. Someone mentioned Bernie...

Oh it definitely happened. And not only did they downgrade the internals and continue to call the SS amp the same model but, their tech line is telling people there are no difference when obviously there is. As if that wasn't enough, now the PPI Phantom series (same internally as the...

As the title says I am looking for a Polk Audio PA D1000.1 mono amp in new or like-new condition. Please PM me with photos and condition of the amp, along with your best price including shipping to zip 42501.

Wow! Is that really a MTX amp? They haven't been relevant in the US in years. Something like that would definitely make a statement. But, limited to the European market I guess? 

Ryan, you might want to add either the JL Audio RD or JX series to your list. The RD seems to be very well received from those who have them, they have unregulated power supplies I believe. Not sure they fall into the "gem or bust" category but, might be interesting. A few others to consider...

They rated those old school amps at 12 volts because at that time you didn't see too many electrical systems, even in new vehicles, that needed over 13.2 volts. In fact, I have some old PPI ProMos amps that were tested by a car audio magazine (yeah, I'm old) to not drop power until their input...

I'm a little lacking on the whole SS/Human Reign history but, I think I read at some point that there were in fact 4 different versions. I may be wrong on that. And as far as the sculpted face on the chassis, it always made my think of something Michelangelo might create rather than the...