Conclusion: Bought this amp almost a year ago, along with 4- 6x9 jbl 938, 2 in doors original speaker spot and 2 behind seats, this is in a regular cab pick up, amazing sound and bass, I listen to country and old rock and never heard it sound this good. Added jbl small sub and 200 watt amp (used) just to hear what it sounded like. unreal bass with no unwanted distortion just clean crisp high and lows. I'm back on now for my 2nd GTO-804ez for a 69 Fairlane I'm restoring.
Conclusion: I have been putting a system together with " best bang for the buck" in mind. I am looking for quality sound at a good price. I have the JBL ms 62c 's in the front and JBL P662's in the rear.They were powered by the Rockford R 300.4( good reviews / cheap price) and though they sounded good just not great, so i took a chance and got the gto-804ez ......WOW! Blows the RF out the water . The "clean" power difference and the sound stage is spot on.
Conclusion: I have 4'' speakers in front and 6.5'' in the back both JBL gto series. I was running the speakers through my car's stock amp and was pretty disappointed with the out put. After blowing the stock amp I through this bad boy in and all I can say is WOW. What a difference. Sound is fantastic boosted the bass X 2. The only problem I have had is using the automatic gain set lights. When I play the disc it doesn't give the correct signal and so the lights are worthless.
Excerpt: I bought this to replace a rockford R400-4D. The Rockford was great as a sub amp on the back channels as my sub amp had not arrived at the time. But on my alpine spr 60 it just didn't have the airiness or crisp sound that I was used to so I bought the jbl gto804ez back on track now sounds great now especially after replacing my alpines with the infinity kappas witch are great but soon be upgrading to the jbl ms -62c as I had a chance to hear them and wow best speakers I...
Summary: Great quality AMP. I have this amp powering 2 sets of Boston acoustic SR60 Component set and the combination sounds amazing !
Pros: Small form factor. Knob controls. Amazing sound quality
Cons: Signal sense power on does not work as well as expected. With the Signal sense power on if you are operation at a low volum after about 5 minutes the amp shuts off. I recommend running a remote power on cable to this amp.
Summary: Grymt nöjd med detta steget. Kopplade in steget med de medföljande "hög-låg adaptrarna" direkt på högtalarkablarna från audi fabriksmonterade huvudenheten. Driver två stycken JBL MS-62C satser som leverar mkt fint med detta steget. Saknar ingen kraft än så länge....