An amp with the features you wantSoundstream designed their Reserve Series DPA4.1600D 4-channel amplifier to supply your speakers, tweeters, or subs with plenty of power, and give you the ability to fine-tune the amplified sound to match each driver with digital precision. The DPA4.1600D can send each of your front and rear speakers 80 watts RMS, for some pretty robust rockin'. Or, you can power a couple of front speakers with 80 watts each while powering a subwoofer with up to 320 watts RMS from bridged rear channels.Digital signal processingDigital Pre-Amp Tuning features include variable high-pass, low-pass, and bandpass filters, along with a variable bass boost. All settings are made by button and confirmed on the digital display. The high- and low-pass filters have unusually wide ranges (20-20K Hz) and steep slopes (48 dB/octave) to accommodate the widest variety of tweeters, speakers, and subs you might use in your system.Soundstream ReserveSoundstream knows that Crutchfield offers free lifetime tech support for the gear we sell — and that's one of the reasons why we can offer you their Reserve line of compact and powerful car amplifiers.