The new Defender 5-watt Model 5H guitar head has one knob! (Volume) But the fun lies in hearing what this knob does as you slowly turn it up.
5 Watts RMS Wattage One Channel 12AX7 Tube Preamp EL84 Power Tubes Master Control Volume Weight: 7 lbs / 3.2 Kg Starting in the counterclockwise position, you'll move through clean and clear tube tones to progressively dirtier sounds until this little sucker is just plain screaming! This "clean-to-mean" response isn't due to any overdrive or distortion circuit, it's just the sound of the single EL84 power tube moving naturally into increased output distortion. And it's great for cranking up and controlling the action right from your guitar's volume control - no channel switching required! Features include one 12AX7 preamp tube, one EL84 power tube and three speaker outputs (4, 8, and 16-ohm). By the way, the Defender 5H head is designed to match perfectly with the Kustom 1x12 speaker cabinet.