The Bass TightDrive was the first Amptweaker bass product, and introduced our popular Tight attack control. Due to many user requests, the Bass TightDrive is also available with an extra knob on the face that adds dry lowend back to the tone, called the the Dry Low MOD, making it easy to simulate professional dual amp rigs as used by artists like dUg Pinnick. When combined with the Gain, Tone, and Volume controls, a lot of different distortion sounds are possible. The tonal variations range from thick bass tones, from barely clean and fat walking blues, to crunchy rhythm sounds, all the way up to seriously overdriving your tube amp for really heavy bass. It's also possible to use it to clean up a tube amp that might otherwise sound too floppy when you play it really hard.