Sound Storm Laboratories EVO40001 Soundstorm Class D Monoblock Amplifier 4000W Max

The amp came on time and packaged well. Installation was easy in spite of the limited documentation. Should be expected from a "budget brand".My only complaint is when I got it all hooked up and I fired it up I noticed a faint thumping noise in my subs. They would thump about once a second. I got a bad unit. It happens. Amazon is sending a replacement even as I write this review. I will update when I get the replacement installed.However, I did put the amp through its paces just the same. I was pleased that the 1 ohm rating was not inflated like a lot of budget brand items found on amazon, but I'm fairly certain the power rating is. The amp is fused at 105Amps. Simple math ( 105 Amps x 13.6 Volts = 1428 Watts Max ) shows that the max power is substantially lower than the claimed 4k. The RMS rating for 4 ohms is more likely the correct Max rating for 1 ohm. The only good news though. This thing drives like a 1500 Watt amp should at 1 ohm.UPDATE:So I got the replacement pretty fast. I finally installed the replacement and it has the same exact problem as the first one with an added flaw. I now hear radio interference in my subs as well. The popping in the new one isn't as bad but still makes the same noise with the same problem. Now, I know some people will criticize my setup claiming my installation is the cause of the problem. I'm not new to car audio, so I know how to eliminate other items as the cause. After disconnecting everything but 1 sub wired at 2 ohms and powered and turned on directly by a battery (no chance of outside equipment affecting the amp), the problem still persists. Good ground connection to bare metal with 1/4-20 bolt and nut and soldered lugs(I don't trust just crimping in high power DC circuits). No RCAs connected. Head unit taken out of the line. Subs rewired to 2 ohms even though the amp is 1 ohm stable. I even swapped in my trusty 7 year old Panasonic head unit. Same problem. I was going to at least give 2 stars because it's powerful and is 1 ohm stable, but the lack of consistent quality doesn't permit me that freedom. I seriously considered keeping it since I probably could live with the noise now since it's much quieter than the first unit, but I can't bring myself to justify the poor sound quality in my setup. That and I worry about the amp having a catastrophic failure at the expense of my brand new Polk subs. I'm also returning the SSL EVO1600.4 4 channel amp I purchased for my 4 corners. The only reason I bought that one is because it matched this one. Instead, I will be spending $100 more than these two amps cost to get a Polk D5000.5 5 channel amp that is a near perfect match for my speakers, which are conveniently all Polk also. Though I will have to tear down my trunk again for the 3rd time since I started this build, it will be worth the peace of mind.Pros:true 1 ohm stablethough the rating is seriously inflated, this still works out to be a pretty serious 1500W @ 1 ohm ampCons:first unit was defective. Had a steady "switching" noise coming through the subs about every second.replacement unit was also defective. Same "switching" noise with the added benefit of hearing radio interference as wellSummary:My first impression was that this is a good amp and I just got a bad one the first time. It happened twice. 2 out of 2 amps were bad. That doesn't sit well with me. My advice: Scrape together a few more pennies and get something from a trusted quality brand like Polk, Alpine, Kicker, Pioneer, JL Audio, Sony, MB Quart, Hifonics, and the list goes on.If Amazon wants to make this right somehow they can credit my account to help compensate for the second bad item in a row

This amp came really quickly, and powered my 2 15 inch subs with no problem. They were rated at 2500 max each, so they tied together really well.The crossovers and equalizers are really easy to work with on this amp. My suggestion is not to use the bass boost though, because it really sacrifices sound quality just for more ground shaking vibrations. This amp lasted me well over a year with no issues at all, at which then I sold it along with my system. I still know the guy, and he still says it's functioning fine months later. All in all, was very happy with this purchase.

I have this hooked up to one kicker L7 12 wired at 4ohms and a Pyle 5 farad cap to go with this all this is in the trunk of an 03 Mitsubishi galant this amp makes my sub slam when the bass hits you can see the trunk of my car flexing to the bass lines would definitely recommend this amp to anyone who knows what their doing when pairing a sub and amp.I will review this again if anything changes

yooooo this amp is crazy it can get the JOB done with no problems at all 1 OHM stable

2x EVO4000's strapped 4 15" L5 kickers 07 camry no box...Bang BANG BANG BANGGGGG bang bang bang bang bang BANGGGGGGGG BANGGGGGGGGG bang! easy install BANG BANGGGGG new Phillips head set screws a +. Manual was a picture book me like pictures. Only - no info on slaved amps if you need to adjust both or just the master but after they're strapped you can figure it out. So far so good only time will (hopefully after a to loud ticket) will tell