OceanAudio OAE-170.1 Car Audio Subwoofer Amplifier - Monoblock, Class A/B, 2/4 Ohm Stable, Mosfet Power Supply 340W - RMS Power @4Ω 1*110W @2Ω 1*170W Max Power @2Ω 1*340W

This was a complete surprise, I was sketchy at first in ordering this amp as a replacement amp for my stock system it lifts real nice my 8 inch subwoofer. I haven't been able to play it for over 1hr yet to test its durability but so far so good although my son %26 I did not pay attention that it's a monoblock amp yet we needed a 4 channel amp for right %26 left channels but as a bridgeable amp to a 4ohm single voice coil subwoofer it hits hard we may need to buy another amp or return this to purchase a 4 channel amp to hook up our 6”midbass drivers %26 8 “subwoofer. If your looking for a monoblock amp to run subwoofer only this little guy will do the job at a huge fraction of the big name brands. Small %26 compact for small tight spaces yet make sure it has decent air ventilation not to add heat stress to this little guy. Overall it has a nice heavy weight to it doesn't seem cheap or light weight as most generic cheap brands. This amp seems well made. If you're not looking to display this amp as part of a show audio display set up no one will know it's a $50 dollar Walmart vendor/associate. You can't go wrong

I'm running a Rockford Fosgate p1S4 15 inch subwoofer on my home theater and let me say does the job like a champ I ran the Rockford fosgate and a JBL 12 inch and a Sony explode for 15 to twenty minutes and the amplifier just barely got over warm to the touch it runs cooler than any other class a/b amplifier I have owned for under sixty bucks it will be hard to beat it for the price and quality it seems to be a solid unit hope this helps..