Preamplifier ?

Don't use it unless you need it.  If your system sounds good to you, give it back to your sister.Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.

Just ran a few google searches on it.  Seems like a great unit if you have a sony deck with digital out.  Do some searching and I'm sure you can find a manual.  If you take time to learn what exactly each feature does it can certainly improve your sound quality.  If used improperly it can also make your system sound like ass.  Do some research.  New Project: 2003 Pathfinder

Learning how to use my Alpine cda7998 is already a pain in the ass. I'll probally just give it back to her...I don't have a Sony deck anyways. Thanks. Thuan

i am guessing this is just like many eq's     plug your line in rcas to it and run your fronts and rears and subs to the acording amps, and adjust till it meets your sound expectations2009 0-1000 Trunk WR 154.0DB 2009 1001+ Trunk WR

2007 USACI World Champion

2007 World Record

2006 USACI Finals 2nd Place

no it should be adjusted on the unit2009 0-1000 Trunk WR 154.0DB 2009 1001+ Trunk WR

2007 USACI World Champion

2007 World Record

2006 USACI Finals 2nd Place

Thuan..........After talking to Steven and looking into it myself , its like kfr said , you have to have  not just a Sony deck but an older Sony Mobile ES deck with a digital output thats not made anymore. So unless you have one or can get one , its probly not much use to you however , If I were you I would concider selling it on E-bay or somewhere electronics are sold. I believe that thing might be worth a few bucks if its in good working condition. I wish I still had my old Sony ES deck. Id make you an offer. Sorry Dude.99 F-one fitty

Pioneer Premier H/U

Alpine EQ

Kicker 1200 amp

4 Kicker comp 10s

6 kicker SS65.2 components