Douk Audio G4 Subwoofer Full-Frequency Mono Channel Digital Power Amplifier 100W

Works really good along with my old Kenwood receiver. The addition of a subwoofer makes my old sound systems shine!!!! Now it is 2.1 system! This little amp is compact and enough to drive my 6" passive subwoofer. I just have it cranked halfway and is more than enough to bring those sub-frequencies up to par with the music. Enjoying my music with a new perspective thanks to this little guy. When you get it, don't forget to put the switch in bass mode. Recommended unit!!!!

Tenía un equipo de sonido Onkyo con subwoofer pasivo, hace poco lo reemplacé por uno nuevo que sólo tiene salida para subwoofer activo, mi subwoofer anterior aún servía, así que decidí comprar este adaptador y funcionó a la perfección.

I two of these have this paired with topping E30 dac, L30 headphone/pre-amp and a pair of old Kef 60S on my desk, one per channel obviously. Much stronger bass / mid-range and improved sound stage compared to my old little class d amp (75W). Separation is improved and crosstalk is pretty much eliminated with this set-up. Definitely Hi Value Hi Fi!

I am very happy with the subwoofer amp. I had to replace my A/V receiver with one that did not have an internal subwoofer amp, and this little amp fit the bill. It works exactly like it did with my previous receiver. If you have passive woofers and your receiver does not have an internal amp for subwoofer output then I highly recommend this little amp. It comes with a crossover switch on the back (B & M). B position is for Subwoofer Mode ( 20 -200hz) M position is for full frequency (20 - 20khz).

Just received after my old power subwoofer amp seemed to put out less bass, thought I'd revive it with a new amp instead of fixing a 20 year old amp. Everything is included (amp, power supply) and all you need to do is use your own speaker wire and hook it up to your subwoofer. In my case I tested the amp with my old car subwoofer and wow...works really good! At first I was a bit disappointed at full max BUT it was because I had the wrong settings, fortunately the instructions provided were helpful. From the factory it comes in setting "M" which is for full range speakers. After I switched the mode to "B", wow, I had to turn down my volume! Pretty legit and nice unit I have here. We'll see on the durability and longevity of this unit as its only been about 2 hrs. Will update as time goes on.