COMBO AMPLIFIER FOR GUITAR Sonzera series combo for guitar. New Sonzera 20 model. Fully valve. Power: 20 watts. 2 channels. Speaker: 1x12''. Power tubes: 2x 5881 or 6L6WGC-STR Short Bottle, Preamp tubes: 4x 12AX7/ECC83. Clean channel controls: volume, bass, treble. Gain channel controls: drive, level, bass, mid, treble. Presence and reverb controls. Front channel selection and brightness gain switches. Adjustable bias. Serial effects loop. Outputs: 2x 4 and 8 Ohms parallel jack, 1x 16 Ohms jack. Dimensions: 49.5 x 26.6 x 45.7 cm, Weight: 19.05 kg. Includes 2-button footswitch for channel change and reverb on/off.