From Rhonda Smith to Reggie Hamilton, it's hard to find a professional bass player who doesn't travel with a CD-BT1. Its successor now features Bass Enhancement including Bass Cut and Bass Boost, more variable speeds, built-in metronome, more controls accessible by footswitch and much more. If you can operate a CD player, you can use the CD-BT1mkII. Take any standard compact disc by your favorite band and put it in the CD mechanism. Then plug your bass directly into the CD-BT1mkII's 1/4" input. Put on some headphones, set the volume, and start rocking! If you're a vocalist, you can do the same, substituting your microphone for the guitar. In ancient times (like the 1970s), musicians would take a vinyl LP record and manually spin the record on a turntable, slowing it down to be able to better hear and understand the performances, like bass solos and complex chord changes. With the CD-BT1mkII, you get a training method that's even better. Not only can you slow down the speed of the CD by up to 50%, but you can do it without changing the pitch of the original material! After you learn the lick at a slow speed, you can increase the tempo in steps until you can match the original performance note for note. Also, you can change the pitch of the CD without changing the speed... Use this feature to "tune the CD" to your instrument. Easy-to-use interfaceVSA (Variable Speed Audition: pitch control without affecting key): +16, +12, +8, +4, 0, -4, -8, -16, -32, -50%Key Control: ±6 semi-tone, in semi-tone steps with ±50 cents fine tuneVSA and Key Control can be used at the same time+16 to -50% Pitch Control in 1% steps (when VSA off)Bass Enhancement Effect (Bass Cut, Bass Boost, Bass Enhanced)MONO Monitor for CD (L+R, L, R)Split Monitor (Left ch: CD, Right ch: Input or vice versa)Single Loop, All Loop, and Seamless IN-OUT LoopFlash Start with CUE: Seamless locate and play from the CUE pointSingle Play and Continuous Play10-sec. anti-shock memoryMetronome (BPM: 40 to 220, Beat: 2 to 6)Active/passive bass input16 built-in Bass Effects5-setting Effect Memory5-band Graphic EQ for Bass with Mid Shape