US Acoustics Amps Are they any good?

[JustGotOne]

I haven't posted here in a while but I have been trolling periodically checking things out. I've decided to try my hand at audio SQL competition. I entered my first one last summer, did ok for a rookie first time out. Anyway I came across this brand of amp and I'm curious if any of you are familiar with the brand. Below are the specs for the two I'm checking out. Any feedback would be greatly appreciated. Below is the description of the 4 channel amp. There's also a mono block I'm looking at as well.

What you are looking at is an amp that was engineered by one of the BEST amp designer/repairer in the industry!!!! Mike Nicholls was on the Zed Audio team in the 90's, and helped engineer and design the LEGENDARY Hifonics GENERATION X amplifiers!!! This guy is a amplifier GENIUS!!! He has repaired many amps for me and they have always been PERFECT!!!! I was blown away when he told me he was acquiring the US Acoustic line and coming out with some new products!!! So could it get any better? The same guy who helped design the BADDEST Hifonics amps ever made, is the same guy that designed the NEW US Acoustics amps!!! I was all over the chance to use/sell this product line!!! This is one amp that will do nothing but make you speakers scream with loud and AMAZING Power!!! So you are buying the classic name, designed by a car audio legend, and the SQ of the higher dollar amps!!! Doesn't get much better then that! Specs listed below, but if I know Mike (like I do) this amp is underrated..LOL ,2 ohm stable.

Continuous output power with all 100 Watts

channels driven into 4 ohm each with

less than 0.01% THD

Continuous output power with all 175 Watts

channels driven into 2 ohm each with

less than 0.02% THD

Bridged into 8 ohm 200 Watts x 2

Bridged into 4 ohm 350 Watts x 2

THD at any power level 20Hz to 20KHz 0.01%

Noise below rated output >97 dB

Frequency response at 1-watt output 2Hz to 200KHz -3dB

Power bandwidth 10Hz to 32KHz -0.1dB

Input sensitivity for rated power 0.2V to 6 Volt

Damping factor 20Hz to 200Hz > 200

Channel separation > 92dB

Variable Low pass crossover (24db/Octave) 35Hz to 400Hz

Variable Low Pass filter 55Hz to 3.5KHz

Variable Hi Pass filter (12dB/Octave) 15Hz to 500Hz

Size (L x W x H) in 16.4 x 8.9 x 2.2

Mono block specs

Has 4 40 amp fuses, 1 ohm stable.

Specs:

Continuous output power with all 375 Watts

channels driven into 4 ohm each with

less than 0.1% THD

Continuous output power with all 750 Watts

channels driven into 2 ohm each with

less than 0.1% THD

Continuous output power with all 1500 Watts

channels driven into 1 ohm each with

less than 0.1% THD

THD at any power level 20Hz to 20KHz 0.1%

Input sensitivity for rated power 0.2V to 6 Volt

Damping factor 20Hz to 200Hz > 250

S/N Ratio > 100dB

Variable Low pass crossover (24db/Octave) 35Hz to 150Hz

Variable Subsonic filter 15Hz to 55Hz

Size (L x W x H) in 14.1 x 8.9 x 2.2

Click to read more...

 

[JustGotOne]

My current setup:

SSL EVO 2000.1 Mono Block amp

SSL EVO 1600.4 4 channel amp

Audio Control Lc7i loc

Audio Control DQDX

Cadence 6x9 Front doors

Cadence 6 1/2 rear doors

Massive Audio DX3

3 1/2" in the dashboard.

2 Rockford Fosgate R2-D4 12's

I plan on redoing everything in stages starting with the amps

 

[garychoffmann 10+ year member]

Barbara ann and Mike make a good couple.

 

[JustGotOne]

Those are the two I'm looking at purchasing. Thanks again!

 

[n2audio 5,000+ posts]

There was an era that Zed Audio was doing US Ac amps, only for a year or two though. I suppose that was right before this Mike Nicholls guy bailed to do his own thing -- no idea, just guessing.

When the era after Zed built them came out they were not impressive. Below rated blah blah. Didn't hear much from them for a while.

Then they showed up at SSA a few years ago so I guess at least THEY have faith in them.

If Mike Nicholls is a sharp guy and learned under Steve Mantz's tutelage there's no reason to expect these aren't solid amps.

One thing is for sure, they're a BIG upgrade over Soundstorm -- as in '80 Pinto vs '14 Camaro.

'Bout 2x power on the 4 ch and almost 4x on the mono. Plus twice the quality, or more.

 

[JustGotOne]

Thanks for the feedback, I knew I needed to get rid of the SSL's, I'm delving into the Sq competition, actually got a decent score 1st time out without a processor, still using Oem head unit for now with Audiocontrol Lc7i, I since added the Audiocontrol DQDX, I just got Barbara Ann & Mike delivered today. Gonna have to rearrange the space I'm putting them in. Can't wait to see how they sound. Will evaluate the speakers once the amps are hooked up. I will report back once I get it done.

 

[The_Quiet_One 10+ year member]

Pics when you get the chance!

 

[BOOMINGRANDPA 5,000+ posts]

There was an era that Zed Audio was doing US Ac amps, only for a year or two though. I suppose that was right before this Mike Nicholls guy bailed to do his own thing -- no idea, just guessing.When the era after Zed built them came out they were not impressive. Below rated blah blah. Didn't hear much from them for a while.

Then they showed up at SSA a few years ago so I guess at least THEY have faith in them.

If Mike Nicholls is a sharp guy and learned under Steve Mantz's tutelage there's no reason to expect these aren't solid amps.

One thing is for sure, they're a BIG upgrade over Soundstorm -- as in '80 Pinto vs '14 Camaro.

'Bout 2x power on the 4 ch and almost 4x on the mono. Plus twice the quality, or more.

I was gonna mention zed too., I bought 3 600f and 1-800 f from him for like $150 each (retailed $400) and they were great amps, well built, in fact he told me they had same parts as stuff costing $1500 (just smaller power supply) but no longer.. however I have seen very good reviews on the new ones..