a decent DI box might help. sometimes impeadence mismatch will thin guitars out. i like the Countryman 85 DIs on a budget or the Radial boxs if you have the coin.

thanks for response, I will check out that DI.

What is impeadence mismatch?

Boswell ...... i think Bos can explain it better than me but when you plug directly into a line level input instead of an instrument input it can cause loading of the guitars electronics and either cloud or thin the signal.

Is this a solid body guitar with magnetic induction pickups, an acoustic guitar with a piezo pickup or some other type? Are there any electronics built-in to the guitar (does it need a battery)? Do you use a pedal or other signal modifier on the way into the interface?

Jam is an amplifier plus A-D converter and computer interface. The output from the amplifier is not user-accessible other than via the A-D converter, so you can't daisy-chain another analog box after it. However, there is the possibility of using it just as a converter by putting your guitar signal into a pedal of some sort and then into the Jam to get the tone you want.

would an apogee duet help aid the fuller sound i seek rather then the jam?

Can't say without further information. It's difficult to help you if you just ignore the questions that would let us get to the root of your problem.

Bos beat me to it.... The more info you can provide, the more help you will receive.

You were asked several questions that were very pertinent to your situation. It would help us to help you further if you could answer them.

sorry I hadn't realised there was a reply I just quickly popped another question out. I just think it sounds thin and flat with all my guitars, my acoustics (battery) and electrics a yamaha pacifica and a Hamer semi acoustic. Not sure what the pick ups are and Im not using any stomp boxes or anytthing just straight into the Jam. From what I can tell the duet has a really good pre amp in it so maybe that will give me the boost I crave.

We're not as concerned with the brand as we are the type of the pups...

Surely you know what kind of pups your electric guitar has, right?

Single coil? Double coil? Humbuckers? Active? Passive?