dB45 3200W 4-Channel 2-Ohm Car Amplifier, High-Speed MOSFET, Adjustable Crossover, LED, Remote Sub Control, Perfect for Car Audio and Subs

DB 45 is an awesome budget amp! Replaced a couple Boss amps that I didn’t do my research on first (amplifier benchmarking) and I spent less money on this and then I did for the other two. Rocksolid amplifier. It does warm up pretty quick when you’re pushing it but it did not get hot. Very happy with the purchase. Only problem I have is that when using the low pass option for a sub there is no sub sonic filter. At least not adjustable, I was playing 19 hz tone to my sub and it was flopping pretty good with no audible sound. Was hoping it would have sub sonic filter set for either 15 Hz or 25 as an option. Update 8/9/2019: I've had this amplifier now for around 10 months now and it's still going strong. Have it hooked up through a pair of 50amp AC to DC power supplies in my garage powering 2x 400w RMS Floor Speakers and a 425w RMS Polk Audio 15" Sub. It definitely pushes out the rated power (as dyno benchmarks have also confirmed they hit around the rated CEA RMS power as stated). Extremely loud and clear music (my neighbors can affirm this too... ). I have a couple other car amplifier / custom sub installs in my house where I still have poorly rated amps and I'm looking forward to purchasing more Rockville products to replace those amplifiers very soon. They will not disappoint!

Low price, great features. One thing I really like about is that despite being so affordable you still get the great features you need for hard-hitting, clear bass. Speaker and wiring terminals are higher quality than other models in its price bracket and offer tight, clean, reliable connections. adjustable low pass hi pass crossover. RCA output jacks make system expansion even easier, too! I’m not just impressed by the great value of the amp but the features you get, too. I’m impressed that such an inexpensive, solid amp still offers features others don’t.

Worth the price. Used amplifiers in the 90's and been out of the car audio world for quite a while. I ended up buying a sound stream amp because they were all the rage in the 90's only to find they are not so good now. It was blown anyways on a channel from the start. So went looking for an alternative that was as advertised. This comes with a dyno sheet from the actual test for the individual amp. I just have it hooked up as a 4 channel amp so can't say much on running it for a sub. It works great for what I use it for but is quite large. It doesn't really fit under the front seat but that's where it is.

These amps are solid! I can't believe how good they are for the price!

Sounds great just what my speakers needed in my rzr will be ordering another one once my door speakers an pods arrive. Highly recommend if putting in a rzr also get pro 4 noise cancelation adapter with it you won't be disappointed.

I like the appearance, the price, it works well if you follow the ratings. I have a clipping point, and I've not done testing yet to find the source, and at what levels. But I will so I get the max from this amp. I really like the CEA certification, if it's true that's very respectable. I don't see that with others. I can't wait to get fully dialed in, but just a first run useing my ears, so far it's kicking ass for the price.!!

Let me start by saying I have been installing car stereo equipment since I was in fifth grade and I am now 41. I sold car stereo equipment out of my house as a kid because I was able to get it wholesale and installed it for free with purchase. Everything about this installation was correct. I had this powering 4 midranges and 4 bullet tweeters at 2ohms. The sound quality was good. The only problem was it began cutting off and going into protection on my first cruise on high and low volume so I gave it a few day trial and it continued to be an issue. I uninstalled the db45 and sent it back and replaced it with the Rockville krypton F2 amplifier. The krypton is hooked up to the same wires and zero issues. I think they just didn't get the db series amps right. I also have the krypton M5 powering 4 12s with no issues. From my experience the krypton amps are reliable, neither of them have ever went into protection. If you are going to go with Rockville I would recommend their krypton line of amplifiers. They seem to have gotten those ones right.

Want an amp that lets everyone on the river (BTW Ohio River in Cincinnati) get to hear your playlist, this is it. This is powering 8 Rockville speakers. Four of them are the 6" marine shallow mounts,RSM65W and I have 4 of the outdoor HP65S. I have a couple of Rockville powered subs too. Needless to say I added the 4 farad capacitor (RXC4D 4) to my 4 house batteries to power it. I really do not use all the power this thing has, good sound at idle and good sound at cruising without breaking up.