12AX7 tube: switches: VINTAGE/MODERN, FAT/NORMAL.
power tubes: switches: TRIODE/PENTODE&TETRODE;
OUTPUT TYPE SWITCH: EL84 single ended(focused and thin detailed sound)/ EL84+6V6 PULL-PUSH (fat and wide sound)/ 6V6 single ended(focused and thin detailed sound)
knobs: VOLUME, DEPTH, PRESENCE
TUBES: 12AX7, EL84, 6V6 OUTPUT POWER: 4W EL84 OR 6V6 SINGLE ENDED, 7W Pull Push EL84+6V6.
speaker; 8 & 16 Ohm