Carl Martin Bass DriveThe Carl Martin BassDrive features tweaked EQ and crunch to add a warm 'tube' sound (real 12AX7 tube inside) to modern digital bass rigs and actually improve their performance. Create that famous John Entwhistle tone, big, round and phat with just the right amount of sustain to place your bass properly in the mix and allow it to 'pop' in live and recording situations. The Drive control blends evenly with your bass tones, rather than sitting on top