This is a really nice, compact, do-it-all device. I stole this list of features from another TB'er's post, because it's as good as anything I could have written: It's a standard preamp that will drive a power amp. It also has a 10W power amp of it's own that can drive an cab to suitable volumes for practicing. It's a bass compressor/limiter. It's an EQ dedicated for bass instruments. It's an active DI box. It's a headphone amplifier with more power than you ever need. It has a stereo input and volume control for your drum machine/MP3/walkman. It is battery powered and has an AC adaptor. It's superbly built with 1/4" thick CNC machined aluminum front panel and stainless steel case. It comes with a padded carrying case. What more could you need? Looking for $275 shipped within lower 48. Payment by Paypal E-check only. Only trade considered would be a QSC PLX2 1804. Pics available upon request.