Kldguitar GT-5HA is a single end Class A tube guitar amplifier head, It is only 5w . This guitar amplifier makes small-room sessions lots of fun! Higher-gain preamp circuit has been added to take the overdrive tone beyond that of the original, and a choice of High- or Low-gain inputs included. With a switch able pentode/triode, you get the only amp in its class to deliver true tonal range from instantaneous punch to deliciously greasy overdrive and with precise control over output volume.