from Germany - Bavaria
Reliable and powerfull
I work with this amp since 5 years. I never had any problems. It is very easy to change the configuration. Amplifier navigator works fine. Please add an ethernet port instead of the USB port. Many thanks to QSC
Great amp to use. Powerful and light. I use this to power four JBL STX 812m, each on its own channel in four channel mode. In the venue I regularly perform at, this amplifier has enough headroom and control to get me through time and time again. I would definitely purchase another if the need arises.
from Westminster, CA
Owner/Operator, The Audio Distillery 10 years. Live sound/events/production audio
Powerful, application flexible, outstanding sound
I have had one PLD4.5 in my amp rack for about a year now. I hope to replace all my PLX's with these PLD's. I use it to drive JBL VRX932LA in bi-amp mode. So one amp will power right and left highs and lows instead of using a separate amp for right and left. Sounds fantastic. Depending on the gig, I also switch it over to to run 4 passive monitors full range. It's hard to believe that one little 2U amps pumps 4 wedges as hard as it does and with such clean sound. So far, not a single glitch with over a year of constant events/productions.
Jose joito garcia
from Puerto Rico
I,m a owner of audio company for 30 years. I used power qsc mx,ex,plx,pl and now pld.
I used this power amp for four years, its excellent for pasive line array speakers. The pld it's complete tools for pro audio.my experience on Qsc products is really good. On parts and service.
Live Sound Engineer
My favorite amp!
This amplifier is just downright fantastic! I have used QSC products my whole life, and the PLD line represents the best of what QSC does. There is not a more flexible amp out there. The DSP software is great, works with a mac, and the limiters are transparent. Some others on the forums say these aren't ideal for subs, but I consistently run 2 JBL SRX728s from each 4.5. They pound for hours straight every time with no issues with demanding genres such as EDM. This is no surprise given the power supply comes from the renown PL380. I also own Crown Itech HD amps and I cannot tell any difference in audio quality whether used for tops or subs. The best part is the efficiency. I have yet to see my 4.5s draw more than 6.5 amps while being used on sub duty. This brings the PLD line into the top tier simply because of how little cost is needed for power when running an event. I still sometimes cannot believe that I have ran shows with 4 dual 18" subs with all of them on a single 15A circuit! I just can't do that with the Itechs. I could go on all day; just buy this if you are in the market for a new amp.
from Madison, Wi
Live sound engineer with 30+ years experience
A game changer
I was originally nervous about using a 4-channel amp... it seemed like I was "putting all of my eggs in one basket." Man, was I wrong! The PLD4.5 is nothing short of incredible and really does "do it all." It'll power subwoofers all day long and never break a sweat. It'll power four stage monitors with complete ease. Or, it'll run a potent FOH system (subs + mains) and never run out of gas. It's just incredible. I normally use the PLD4.5 to power some passive mains, and even when pushing it hard, it sounds fantastic, runs cool, and never pulls more than a few amperes. I love the DSP functions - the limiters are excellent, and the crossover and EQ work really well. These are such great amplifiers, especially for their price point!
from Cleveland Ohio
I own 5 of these amplifiers and they are fantastic! I love that I can use them in multiple configurations easily. They do a great job for both mid-highs as well as subwoofers. The clarity is fantastic, they are light weight where it is no big deal to lift the amp rack by myself and I the power efficiency is a huge benefit for mobile applications.
AL Garvin AG Sound Media
from Long Island New York
Sound engineer, Installer, Retailer
So far its a pretty good amp. I love the digital interface. Using a computer to access features is recommended. I will buy 2 more of tese amps.