Pyle PLMRMP3A 4-Channel Waterproof MP3/iPod Marine Power Amplifier

• Marine amplifier delivers 4 x 100 Watts RMS at 4 Ohms, 4 x 200 Watts Max at 4 Ohms, 4 x 300 Watts RMS at 2 Ohms
• Power protection circuitry with anti-thump turn-on and soft turn-off to protect your speakers
• Accepts RCA line inputs and includes a 3.5mm-to-RCA adaptor so you can plug in your MP3 player or iPod easily
• Also accepts standard high- and low-level inputs from marine head units
• Includes wired remote control for adjusting volume gain

This amp will do well for most applications, especially the water resistant (NOT fully submersible) ones. Unfortunately like many amp manufacturers Pyle has chosen to exaggerate the amp's wattage rating beyond all reason.

This amp (like many other low end auto and motorcycle amps) is built on the Toshiba TA8210AHQ amplifier chip. In this case the amp has two chips with each servicing two channels. According to Toshiba this chip is rated at 22 watts per channel at 18 volts. At your average car voltage levels (12-14 or so) it will deliver less. There is no voltage boosting stage which would be required to anything deliver more than about 40 Watts bridged into 4 ohms and the TA8210 isn't rated for bridging anyway.

Note: The technical details posted on this unit as of 7/18/10 are also apparently for some other device. This unit has no AA batteries or USB connection.

Some other technical details are inaccurate: The documentation does not mention the unit as bridgable and the chip documentation doesn't either. It IS 2 ohm stable according to the Pyle documentation (a correction). Some elements are barely technically correct: The distortion is only correct at very low power levels and if the unit is providing 22w it is doing it at 10%THD. Frequency response is 20hz 20k not 10hz 20k

Net recommendation: A good unit for marine, motorcycles and where you don't have space. Not as good as it's specs, but most low end amps are using the exact same chip and circuit design with different housings anyway.

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really works for me. i put this in my jeep with some cheap speakers. love the idea of not using a head unit. this amp is all you need (and an ipod). it has a seperate input and volume control. i mounted the amp inside the dash (theft proof), put the input in the console and the volume control high on the dash where it is easy to get to. works great for a low dollar anti-theft system.

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works great on my rzr, i have 2 5.25" hooked up to it and hear them loud and clear. Volume knob works great when talking to passangers.

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Bought this amp for my jet ski. After reviewing a lot of units, this one seemed to have everything I was looking for and at a great price. Comes with almost everything you need out of the box. Only thing missing is an on/off switch. Sounds great on the ski and was very easy to install. After seeing and hearing this little unit, my neighbor is buying one for his jet ski. Very glad I purchased.

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I ordered this for my father-in-law. I already had one for my Rzr and it worked just fine. I have gotten it wet from riding and washing the Rzr and it still works. For the type of set up it is and the amount of money you have to pay, I would recommend it to any one.

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Boss Audio R1100M Mosfet Monoblock Power Amplifier with Remote Subwoofer Level Control

• MOSFET Monoblock Power Amplifier
• Remote Subwoofer Level Control Included
• Blue Illuminated BOSS Logo
• Max Power @ 2 Ohms: 1100 Watts
• RMS Power @ 4 Ohms: 250 Watts

I'm an electronics engineer so I care about specifications. This amplifier is a low cost item which offers reasonable value, but I wish they would be more honest with their claims.

My measurements show 21.5V rms continuous into 4 ohms at the onset of clipping with a 14.12V supply. This is 115W rms.

With no load it gives 23.9V with 14.12V supply. This corresponds to 142W rms peak.

So, essentially it is a 100-150W amp (4 ohms), or at best 200-300W (probably less) into 2 ohms. The claims of 250W into 4 ohms or 1100W into 2 ohms are at best ridiculously optimistic.

I would suggest that it is worth paying a bit more to get something better.

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Sorry folks...

But there are a couple of myths, being two pieces of (...dare I say it?) outright misinformation that have become attached to this compact masterpiece, ...even though I'm sure both of them were offered with the best of intentions.

As for me, I thought I'd wait until I'd driven it hard and bounced it around the Aussie Outback for a couple of months before any attempt at reviewing it.

A little background: I'm an Audio Director/Sound Supervisor in my fifth decade of ongoing work in this field, most of it live (or "as live") and on location.

My Boss Audio R1100M is used to drive either full-spectrum sub plus line array or horn plus ported-woofer long range speakers (a choice dependent on the vagaries of weather and/or crowd numbers) at impedances from four to sixteen ohms, ...the only constant factor being the need to rely exclusively on DC vehicle power.

The verdict: ...five stars. No doubt whatsoever.

The Boss Audio R1100M delivers far more than something that's roughly the price of a case of beer should ever be able to do.

(What a crying shame that its excellent internal fan-cooling arrangements don't actually extend to chilling beer. Now that WOULD be a world-beater...)

To those well-intentioned myths:

First, "The Remote Subwoofer Level Control doesn't work."

Not when the amp's switched to "Full Range" it doesn't.

When it's in "Full Range", it isn't expecting to be driving just a subwoofer, is it? Switched to "Low Pass" (i.e. subwoofer) mode, the remote control works a treat.

Second, "It's under-powered."

Hang on a cotton-picking second, did you honestly expect to have mountain-moving power for the price of a case of cold ones?

Now look at it's main fuse. It's 30 amps. That's your lot, any more and it all goes dark and quiet until you replace the fuse.

Time for some basic arithmetic, 12 x 30 = 360. That's 360 watts of total power going in.

Wait a second, my alternator kicks out a gargantuan 14.4 volts! Whoopee! Hurrah! Huzzah! Hallelujah! I've now got an earth-shattering 432 watts at my command!

...Uuh, ...um, ...well, ...er, ...I WOULD have if everything inside the immaculately designed Boss-Box yielded 100% efficiency.

Sadly, 100% efficiency from ANY power system is the stuff of Nobel Prizes and/or science fiction.

(Trust me when I say that you won't ever again need to consult anyone's review of anything after YOU'VE developed a power system that's 100% efficient.)

Meanwhile, back in the "Real World", guess what?

With power being wasted to generate heat, run cooling fans and the losses inherent in each and every electronic step taken, the BEST amplifiers are around 25% efficient.

25% of 432 watts?

That would be 108, just a tad LESS than I (and others) have observed to be the continuous power actually (and reliably) delivered from this tiny Boss-Box into 4 ohms.

The controls all do exactly what they're meant to do. The sound is clean, gutsy and free of artefacts, so, by way of a conclusion, here's the outcome of some OTHER basic arithmetic I did prior to buying it...

I can't buy an aluminium housing of comparable ruggedness for the price of this entire amplifier.

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For anyone looking for a good, cheap, and reliable amp this is it. I have two 1100 watt 12'' Sony Explods hooked to this amp and they hit hard and sound clear. The company should actually charge more money for this amp and for its price you cant beat the sound and performance it puts out. I was impressed by this amp and it has done more than what i thought it would for the price. This amp truely is 1100 watts. For someone starting on a budget i would say this is the amp for you. It doesnt get overheated and if it does it has a protection system built in so you dont blow anything. This is a good quality amp that i truely think would be good for anyone starting on a budget or looking for a good replacement amp.

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Installed this amp to power a single JBL GT5 12". So far the amp has provided a flawless performance. You should spend some time fine tuning the low pass filter settings to minimize distortion. The bass boost switch isn't needed for a single sub, and the remote control does not need to be turned all the way up for satisfactory results.

I would recommend you use an 8 ga. power cord and ground for your installation. Ground the amp with 24" or less of 8 ga. ground cord. The "Boss" emblem lights up when the power is on, so you might want to install the amp where it will not reflect onto your rear windshield.

I have not felt any excess heat coming from this amp yet. The compact size is great for concealing in small spaces. I was able to install it in the back of an F-150 cab and still have enough room for cooling. This is my first experience with a Boss amplifier, and I definitely pleased with the results.

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this shiped fast and works great it makes my 10' sub sound amazing and it bumps my car so well. buy it you wont regreat it.

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Planet Audio AC2000.2 MOSFET Two-Channel Power Amplifier

• 2000 WATTS MAX POWER
• Bridgeable Trimode Operation
• Input Sensitivity Selector
• Variable Bass Boost (0 to +1 8dB)
• Switchable Phase Shift (0-180º)

I purchased this amp for my work truck. This amp has plenty of power. Im just running two 10 inch kicker comps. This amp is turned way down low and the bass sounds friggen awesome. I can tell that if i wanted too this amp would handle 2 more subs. It was a lot more power than i needed but hey im not complaining :) This amp sounds clean and it really pumps for the price. I highly recomended this amp.

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Purchased this amp because of the low price & Specs. Running it bridged powering 2 12s Pioneer Champion Series at 4ohm and man do they pound! My whole car rattles like crazy It's a great amp to have being a bargain & the bass knob does come in handy. The logo sign also lights up blue mostly visible in the dark. The only cons are that it's fairly big & heavy. It also gets warm from use at times but nothing major. Overall i recommend this for anyone for a' first amp' on a budget.

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Great amp for the price. i have it pushing two thousand watt twelve inch shallow subs in my 2004 gmc sierra. would suggest it to anybody

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this amp does everything it is supposed to. makes my subs pound.im running two lazar 15's bridged at 4-ohms and its awesome!

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Prompt shipping and GREAT price! BUT for a 2000 watt amp this thing is a little over rated. Still loud as hell but not quite as powerfull as I expected from a 2000w amp. But for under $100 I suppose I can't Complain. It pushes my 2 kicker cvr 15s no problem. Bass knob is sweet and the amp is really cool looking, I couldent bring my self to hide the amp, i had to mount it on top of my box . I expected the planet audio symbol to light up but actually just the word ANARCHY glows when the amp is on and dissapears when you cut it off but I'm mad at our gov for taking all my tax money so I'm cool with that. Over all this amp is peretty freaking sweet for the price, I highly recomend!!!

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