PRV AUDIO Car Audio DSP 2.4X Digital Crossover and Equalizer 4 Channel Full Digital Signal Audio Processor DSP with Sequencer Remote Relay

Working well! Using this for speaker setups at parties/small events to do crossovers between subs, mids, and top speakers. Have also done delay towers with this, and is a nice solution all around. Has "graphic" EQ (no actual graphics), delay, gain, crossover, and phase controls. Would be nice to have a pan feature though.

Sound quality improved nicely although i wish i bought the 8ch

Llego antes de lo esperado 10/10 tiene buen sonido

The low cost attracted me, but the flexibility and sound quality justified the 5 star rating. Its loaded with useful features, and the crossover is excellent. I hooked it to a 13.8 VDC regulated linear power supply, and use it to control my woofers and subwoofer in a bi-amped tube/solid state 2.1 home audio setup. It works surprisingly well in that role. The longer I've used it, the more impressed I am. It really allows you to dial in some fine detail to your room and tastes. I was able to set and increase the crossover slopes, adjust the gain levels, setup delay to the woofers, and cut room nodes dramatically using the PEQ feature. Addressing the room nodes made a significant improvement. There's no question that this is an improvement over what just an active crossover can do....it's a bit mind boggling. I didn't find it overly intuitive to use at first, but managed to make it do what I wanted. It's making more sense as I get used to it. Great unit at this price, but I could see some benefit from having a laptop or phone control to make adjustments from the listening position....I'm guessing that feature won't be found in this price range. Definitely recommended.

Works great. Easy to use. Very easy set up.