4-Channel PA/DJ Power Amplifier, 4 x 1520W at 4-ohm, 1U Rack Space Lightweight (ST-UPDM4C)

Very impressed with this mixer sounds fantastic. Bluetooth works great. MP3 player works great only one delay, but it sounds very good. i’m using it for my band running stereo guitar. i’m using it with a sound town amp. I just got which is also amazing blows away the crown. vocal sound great.

I am a pro audio professional. I work with bands and DJs. I know that sound town is not really a respected “pro” brand. It’s kind of “cheapo”. Like Gemini or American DJ or something like that. But… I just needed something in my little test rack that i keep just inside my garage door so I could plug in and quickly test speakers as they came back from each gig. It didn’t have to be great. It just had to work. I have to say, that I am actually very impressed with how this amplifier sounds, considering how small it is, and how reliable it has been so far. I use it for testing everything from subwoofers to stage monitors to full range speakers. I even use it to test out active three-way larger PA speakers so each channel is doing a separate frequency range, I.e. external sub channel 1, lows ch2, mids ch3, highs ch4. Not only does it do all of this without any issues, but it seems to be loud as hell with plenty of headroom. I haven’t taken this to a gig, because I use QSC and Powersoft for the real gigs, but this little amp is worth a look if you are a small DJ or band on a budget. It’s actually hard to believe how much output this thing has while still being small enough to put in a backpack. Amazing.

I was looking for an option to run passive speakers when I didn't have my actives with me, as well as more than 2 channels. This amp has plenty of power over 4 channels. I would buy it again, if I needed to.

So so

I've used amplifiers from Peavey CS1200X to the fancy 1 RU "Italian" Powersoft digam series. I've been a DJ for over 20 years and I have to say that this little unknown amplifier holds its own. Currently for my small DJ rig I'm running 4 passive QSC AD 8t that I modified to fit on stands and I also run 2, modified 10 inch Meyer Subwoofers off of 1-4 channel Amp. I have a small DSP to cross over the frequencies going to the Amp. This Amp is extremely powerful. I had my doubts in the beginning but I'm very glad I bought this unit. Getting ready to buy more for my bigger systems.

Very deceiving advertised pwr rating as 1150 watts @ 4 ohm rms. I ordered this to run a pair of JBL JRX225 rated at 4 ohm 500 watts ( on channel 1&2 leaving ch3 & ch4 empty), yet the amp is struggling and constantly cutting pwr (at every 3 to 5 seconds) even the sound is not produced as loud as usual and despite I only feed HF & mid thru it and crossover LF to separate subs. I believe this amp max pwr rating is 300 watts/4 ohm (peak) at best, not worth $300+. A Behringer NX series would beat the crap out of this amp both $ value & performance wise. What a waste of my time setting it into my rack, super annoying. I m on the verse of returning this amp back. This amp is probably 150w rms/300w peak. Not recommended unless you plan to run 200w spkrs or less.

I run a small sound company that does about 15 concerts and festivals a year. I have to run sound in a 360 degree setup which can be challenging. I use this amp to power 4 -12" two way Mackies, covering about 500 people, and it has performed excellently. I received more complements on my sound this year, than any of the past 20 years. I used it all year, pushed more than my previous amp (QSC) and it performed better. I am able to send individual signals to each speaker and control the sound much better. It only takes up one rack space and is very lightweight. I will probably buy another one very soon.

This is an excellent and high powered amplifier for its price.