Ground Zero Audio Radioactive GZRA 4HD 4-Channel Class D Amplifier

Sales representative was very helpful and provided my order status soonest. Great communication 👍🏽

The amp blinks after a few min of playing and was installed by professional stereo outfit here in Longview Tx. Big Daddys Stereo installed and its failing to work correctly. Can we send back for replacement amp?

You can’t beat the bang for the buck when it comes to Ground Zero and TDS was prompt with customer support and shipping. Highly recommend.

came on time and nothing was damaged i really appreciate TDS

Order Shipped and received next day!!!!!!! Wicked fast service!

Great speakers!

Sound great just can’t push em past 300w each if you listen to anything with notes under 60hz. Pair these in your bags use a bass blocker on these or an electronic crossover to keep them from flexing too hard. They like around.75 cu ft with ports. I’m running these with blockers and a pair of 2.5 inch compression drivers with blockers and each bag is set up to run @ 2ohm. I’m running a ds18 compact 4 channel and it sounds phenomenal. Just filter your bad frequencies.

The speakers sound really good! Very pleased with the purchase and it was a fast delivery.

Service and pricing were great! Took less than a week to rceive my DSP!! Thanks again

Ground Zero Audio Iridium GZIW 165 6.5" High Quality Subwoofer (100 RMS)

Upgraded the fairing on my Harley with a set of these. Nice full range sound, clean, clear, and loud. Conservative at 125watts per speaker. I wish I had done it sooner.

Great product and speedy shipping/delivery

Wow, just wow! these speakers are waaaaaay louder than I anticipated. Have them and my Ground Zero 8'' speakers on a 4 channel 2,400 watt amp with a Soundstream head-unit. Was concerned about putting them on their own channel so I turned the channels to both of them down first. They more than handled it!! couldn't even hear my 8'' and had to retune. Great speakers.

Great speakers and fast shipping