The Phil Jones Bass Buddy is "da bomb"! It has a 5 band eq, built in compressor, 1/8" line in, headphone amp, 10 watt power amp, active/passive switch, & built like a tank. I don't even use an amp anymore because it does everything I need. Actually, I run a line from our monitor mixer to the line in and use it as my IEM mixer. The built in compressor is average at best but the eq & headphone amp more than makes up for any other short comings. The tone of the Bass Buddy is so good that Nathan East has used it to record whole albums. It's like the swiss army knife of di's.