

The DI box was basically just an adapter, as calaverasgrandes puts it, to match high-z and low-z and connection types. The original purpose of the DI box was to match impedance levels (and connection types) so that you could connect a 1/4" high-impedance signal (aka "High Z," or "instrument-level") into a mic-level (aka "Low Z") XLR preamp input, or vice-versa. Why would you do something like this? Well, technically, there's no good reason, if your Eureka preamp has an instrument input that you're happy with. If you had a DI box you wanted to use, you would plug your bass into the DI box and then plug the DI box into your preamp. However, recording direct you had better like the sound of your guitar because it won't do much to "change" it like a amp or amp emulator would.Īt the risk of flogging a dead horse: yeah, what everybody else said. My Grace 101 has the same type input that is also 1meg ohm and it gives me the best bass sound I've ever been able to get, sounds just like the guitar. The Eureka does not require a direct box because it already has one built in and at 1meg ohm the input should not load down your pickups so you should get all the tone and sustain your bass can put out. However, some of the new ones are doing both but still are called direct boxes for lack of a better word. Most direct boxes don't have any gain to add, they just convert the guitar output to more of a mic output and that would go on to a preamp in the mixer.

But aren't I achieving the same basic results plugging my bass into my Eureka preamp? I see these reviews on the SansAmp Bass driver, and the Aguilar Bass DI, etc. IS there a difference between a Preamp and a DI Box?
