The design criteria for the X1 was to deliver the sounds of the classic Carvin X-100B amplifier in a compact package with added connectivity. The result is a full tube preamp in a pedal format, able to fit in a carry-on or backpack. The X1 incorporates tube technology with simple, yet flexible modern features to interface with many types of gear. » Preamp Tubes: Two 12AX7 (four stages) » Controls: MASTER, BASS, MID, TREBLE, PRESENCE,GRAPHIC EQ » Lead channel: VOLUME, DRIVE, GAIN switch » Rhythm channel: VOLUME, BRIGHT switch » Graphic EQ: 5-Band, channel tracking, foot switchable, backlight color indications » Audio connections: Input, Output, Loop Send, Loop Return, Cab Voiced Out/Phones, Speaker » Input Impedance: >500K Ohms » Effects loop: Fully buffered, footswitchable, pre- Master/Amp/Voiced Out » Cab Voiced/Phones: 3G (3rd generation) active analog circuit, 2x12" and 4x12" settings, » TS (mono) or TRS dual-mono (for stereo headphones) low impedance capable » Speaker Output: 1 Watt @ 4 Ohms minimum » Footswitches (4): BYPASS(Master or Loop), GEQ, GAIN, CHANNEL » Bypass type (master): relay engaged hardwire bypass » DC adapter (included): , 100-240VAC input, 12VDC/1A voltage regulated output, 5.5mmOD/2.1mmID Center Positive » Size: H x W x D 3.825" x 8.875" x 8.375" (97mm x 225mm x 213mm) » Weight (without adapter): 3.9 lb. (1.77 kg