The Dual Drive knobs on the LaChapell 992EG provide an incredible array of tonal options. Favoring the input knob will increase the signal going into the tube, resulting in more harmonics and overall distortion. Favoring the output know yields a very clean signal. Together, you can dial in sounds from pristine to warm and harmonically rich making the 992 one of the most versatile pieces of gear in your recording studio.
