This job can be easily handled by the Tech 21 Sansamp Bass device.

Tailored to send the actual sound of one of a handful of great bass amps to the PA while still sending your regular signal to your amp, the Sansamp Bass also makes an excellent Direct Box for recording as well.

Fits in your bass case, no bass player should be without one IMO.

http://www.tech21nyc.com/products/sansamp/bassdriverdi.html


--Mac