Little Dot Mk6 Vi+ 6080 X4 6H9C X2 Balanced Head Amplifier Tube PreAMP Little Dot MK VI+ has exceptional dynamic range and can produce clean amplitudes of 70vp-p into 120 ohms Little Dot MK VI+ has the balanced Class-A sepp (single-ended push pull) ocl (output capacitor-less) circuit topology delivers rich tonality and Brute force clean power for maximum dynamics and low frequency impact