GUITAR HEAD AMPLIFIER Mini guitar head. MV50 Rock offers more aggressive sounds that evoke British high-gain amps. 50 Watts. Analog preamp that incorporates Nutube. Speaker and Line / Headphone Outputs. In / Out: INPUT x 1, LINE / PHONES x 1, SPEAKER OUT x 1. Preamplifier: Nutube 6P1. Output Power: Max. 50W RMS @ 4ohm, 25WRMS @ 8ohm, 12.5W RMS @ 16ohm. Electric consumption: 3.43A Dimensions (W x D x H): 135mm x 100mm x 75mm. Weight: 540g. AC DC19V adapter included.