I have an Arc Audio 4050XXK and 2050XXK. Both are in excellent shape, but don’t have the original terminal screws. These amps put out more than rated power. Check out my review of them on www.n2caraudio.com Looking for $240 for both plus shipping. My zip code is 96003.

Arc Audio 4050XXK

Stereo @ 4 ohms: 4 x 50 watts

Stero @ 2 ohms: 4 x 90 watts

Bridged @ 4 ohms: 2 x 180 watts

THD %: <.07%

Freq Response: 20 Hx - 20 KHz

Signal to Noise Ratio: 95db

Seperation: >65db

Transient Dist.: <.01

Input Sensitivity: 250 mv - 2.5 v

Bass Boost +18 db @ 45Hz

Crossover (Butterworth): 55Hz – 5.5kHz 12db stereo

Max Current Draw: 46 amps

Damping Factor: >300 @ 1Khz

Dimensions: 13 x 8 x 3.35

Specs:

Arc Audio 2050XXK

Stereo @ 4 ohms: 2 x 50 watts

Stero @ 2 ohms: 2 x 95 watts

Bridged @ 4 ohms: 1 x 190 watts

THD %: <.05%

Freq Response: 20 Hx - 20 KHz

Signal to Noise Ratio: 100db

Seperation: >75db

Transient Dist.: <.01

Input Sensitivity: 250 mv - 2.5 v

Bass Boost +18 db @ 45Hz

Crossover (Butterworth): 55Hz – 5.5kHz 12db stereo

Max Current Draw: 28 amps

Damping Factor: >300 @ 1Khz

Dimensions: 8.75 x 8 x 3.35

I'll remove this post later and your response. Do you want the for sale portion broken back out? I feel this should be moved, but didn't want to squash the for sale ad.

I'll remove this post later and your response. Do you want the for sale portion broken back out? I feel this should be moved, but didn't want to squash the for sale ad.

You can take the for sale thread out. I have them sold a couple of times over, but I think I might hang on to them and do some more testing.