Monoprice Unity 200-Watt Bridgeable Power Amp - Class‑D Amplifier, 12-Volt Input/Output Triggers, Rack Mountable

My cousin has an antique system with multiple speakers in 4 rooms that were driven by an old Denon receiver with a crappy speaker switcher box. The receiver's amp section died but the pre-amp outs worked fine. This was an ideal solution so he didn't have to learn a whole new system, I just tied the amp into the speakers with a new 4 speaker switchbox with impedance protection, ran the pre-outs to it, and we were back up and running with no change with how it works from his perspective.With a 12v wall wart running from the switched outlet on the Denon for the trigger it worked out great. With the small size and Class D cool running temperature it all went in the cabinet with no issues. It sounds as good as it needs to for this application.We'll see how it holds up over time, but for now I'm very happy with it.

El dispositivo donde se conecta el cable tanto + como - tiene muy poca profundidad esto implica que los cables luego de conectados no queden lo suficientemente firmes y se salgan o desconecten, es extraño puesto que es un dispositivo costoso.

I'm using this to power 2 subs, bridged. It works as it should but there are a few things about this amp that annoy me, especially for the price. First thing is that I notice a pretty audible hiss from the subs, even at only 60% gain. It's only audible at super close range, so it's a non issue for subs but if running speakers, this hiss may be noticeable from tweeters, so it's something to be aware of. Next thing is the speaker terminals on rear are a bit flimsy and seem like they could break off easily, so be gentle. Another thing is that when the amp goes into standby mode when using auto on setting, the amp itself makes a high pitch whine. It's subtle and those with less sensitive ears may not notice it but it was enough that I decided to just keep the amp on, since it switches off during movie dialogue anyway, even with sub level in receiver set at max. It barely gets warm (since only running at 8ohms) even after hours of music so I'm mostly fine leaving it on.So I'm okay with it, not annoyed enough to return and search endlessly for a chance at something marginally better but it's a bit overpriced for the build quality due to these quirks unless I just got one that was rushed through assembly.

I used this amplifier (and the similar Unity 100) for a "fiddle-proof" installation in a bar. It was almost perfect for that purpose. It would have been perfect if it included a crossover.

Le faltaba la pieza removible en donde se conectan los cables de los parlantes.

Pros: small form factor, basic controls, decent price for the watts per channel.Cons: Introduced an audible, low frequency hum to all channels. Tried it on two separate, properly grounded systems, different cables and wiring. Also caused the two connected speakers to "pop" when the amp is turned off. Ended up returning it.

This amp should theoretically be a great add to a home theatre, but the noise floor is very very high and it introduces a lot of noise (high frequency) into the system. So high infact that my family members who typically dont comment on these things mentioed, the noise and complained about it.Thankfully I am in the return window and I will return the amplifier, and go with a more reputable (but unfortunately more expensive) brand.My recommendation is that if you are in a lo-fi environment like a bar or restaurant, it might be an okay fit, but for any hi-fi or home audio situation this is not a good match

I’ve set this up in a few configurations with a Sonos connect. In all configurations and compared against a Onkyo M-282 amp, this unit almost sounds like it’s distorting at all volume levels. Playing “Love Reign O’r Me” has very noticeable drops in all the quiet parts and generally poor sound throughout. Time to spend more for better results.