12 Channel Power Amplifier w Bluetooth Wireless- 600W Max Power Rack Mount Amplifier with Multi-Zone Sound Mixer–RCA, USB and AUX inputs-Great for Restaurant, Theater, Studio or Stage- PT12050CH

Grabbed this for a friend who has an entertaining space.They had been using the big Bluetooth PA speakers for ambient music, and while they did the job, they weren't the best solution.On arrival, I noticed that the amp was well packaged, and was very clean for a unit that was returned. I tested all of the channels, and they all worked.Then, I opened it up, to see what it looked like inside. I'm pretty blown away at how clean and simple it is. Now, it's not using discrete output transistors with huge heatsinks, but it does have integrated amps with heat sinks and cooling fans!It looks like it's running 4 channels per amplifier chip, and they appear to be temperature controlled as they don't spin up until the amp has been on and playing for a few minutes. I couldn't find specs on the amplifier type (guessing it's a type D, given the size) but it's got some nice beefy output caps.It's also great because you can play music and use a mic at the same time, and it appears to have mic ducking built in!It would be nice if it reverted back to bluetooth when you power it back up, but it's just 1 button press. Oh, some discrete bass/treble trims would be better than the built in EQ curves (which also reverts to a flat response curve uppn power up), but again, it's not a big deal to press the button for that either.We've found that whatever device you are streaming bluetooth from (Apple TV 4K in our case), this amplifier will wake it and start playing whatever music app you were using last as soon as you set the input to Bluetooth. That's nice.I'll take a couple of pictures of the install this weekend and post pics of that too, if I can.Overall, yeah, I'd but another one of these if I needed to, but I can say with just 10 speakers and a 4000sq ft open space, this 1 amp is plenty!

I like that for a simple home system the hookups to the banana plugs went well and that it's easy enough to hook up speaker wires to reflect sketch location by room. 400 ft2 is filled pretty comfortably (11 oclock set) by 5 speaker house monitor set rated at about 100 w/ ch each. The TV sound out is nice on Aux1 but doesn't promote stereo L/R unless also use Aux 2 or the mysterious RCA Inputs (diagr #18) - as nothing on front label RCA or #18 outputIF the unit were to run 6000 watts then 50 amp circuit would need to be in place ... hmmm ?It would have been nice to have (NTH) an RMS power rating per channnel/4 ohms or 8 ohms.IF there were only 2 or 4 main sets of speakers NTH feature Bridgeable channels with included bridging hook(s).A MAIN volume dial would be pretty useful..for once you have set max levels of the speakers , inputs etc. some random person can operate the MAIN Volume and not likely mess up any of the more than 16 outputs and 6 input controls on frontAlso NTH front 1/4" inputs. Currently OK as can convert rear RCA input to accomodate 1/4" instrument jackPossibly easier to use an instrument preamp combo to go to some of the RCA or Aux inputs so not so many wires to mess with. (e..g. guitar, bass, synth, analog instrument mic) and that is pretapped into RCA audio input (#18 diagram) (, supposedly controlled at front by something not identified as RCA audio input.Possibly the instrument box would go into mic 1 or mic 2 TRS input on back... I guess I'll have to experiment.Some typical Input setup diagram would be nice to have (NTH) for TV, CD, tape, USB, mic1, 2, kareoke, electrical instruments, DVD, 1/8" headphone (3.5mm) inputs, 3.5mm output But for the price point this Unit is great.

Bang for buck? Kind of hard to beat if you are looking for a “sacrificial amp”. I have an outdoor kitchen/pavilion, it stays dry, but heavy humidity days wreaks havoc on non-protected electronic gear. I did not want to spend $1K+ on a “sacrificial” amp to power 8 outdoor speakers. I am concerned about the “life span” of the product. I hooked up 8 (4 open channels) speakers with an 8 ohm load. At 8 ohms I would expect the amp to remain cool. At 50% volume, the unit was getting pretty warm in less than an hour. I plan to break out my Oscope and meter, but I am estimating this unit has a max output of 60 watts (RMS / unclipped signal)) per channel at 8 ohm (NOT even CLOSE to 250 watts RMS they are claiming). I am sure the output will be higher at 4 ohm, but then wondering how much hotter the unit will get? Overall at the price point and just looking for decent SQ, I am impressed by the unit. If it lasts at least 1 – 2 years, I will be more than pleased FOR THE MONEY. Overall I feel I received a good bang for buck. NOTE: After using this a few times some usage "issues" to contend with. 1. When you turn the unit off it loses your selected input source. I contacted support there is no way to change the default input source at power on. Not sure why the engineers decided to use the USB input as the default input source? 2. When you turn the unit off, the volume defaults to low power settings. These minor oversights create a headache when the wife calls you asking you how to get the stereo going in the outdoor kitchen. I hooked up an android tablet and was hoping I could simply power, have spotify/pandora on the tablet and be done with startup. NOPE!

Used it to power a multi-room system. Worked pretty well for a few years but as others have mentioned it gets pretty hot, and three years later it seems like the fan is giving out since it makes a very loud noise constantly. Worried its going to over heat so replacing it already.