surprised I was.. They sound GREAT! I have a head unit with 50 watts a channel output.. So ya figure - 25 RMS... They bump just like they should.. Super clear vocals and great MIDS... With a small 4 channel amp I can only imagine they would sound even better.. For the price they are perfect. Even if you are just replacing them with a factory head unit, still the best for the price.. More exspensive, better grade speakers, will def with out a doubt out perform these, but in the same breath - THEY SHOULD. If you are looking for a high end speaker to hook up to a high end system - keep looking, but if you are looking for factory replacements, an upgrade from stock to a better head unit, than these are a great pick. I purchased 2 sets of PL-63BL speakers. These speakers deliver an outstanding price/performance value. A little bright/tinny in the highs, but a reduction in treble takes care of that, and saves a few watts. The bass is lacking and a subwoofer is definitely welcome to help pick up the bottom 2 octaves. Overall, as replacements for OEM speakers, you cannot go wrong. I would highly recommend the Pyle PL-63BL speakers to those on a budget. I purchased these speakers to install in my 98 Saturn SL2. The stock speakers were still in good condition and sounded OK. I figured that anything would be better than the stock speakers and at $25.00, it was worth taking a chance. The OEM speakers are an odd size (6.75") so I did have to drill four holes, which wasn't a big deal. I spliced the wiring instead of doing a re-wire job. As another reviewer said, the wire supplied with the speakers are thin. I ended up exposing twice the length of wire than I normally would and doubling it up to give the butt connector more to crimp on to. After installing one side, I played some music to compare the speakers. What a difference! The highs were much improved. The voices were clearer, cymbals were more distinct, and on acoustical