Supro 1600 Supreme 1x10 25W Tube ComboThe original 1959 version of the 1600 Supreme amplifier was sold bearing either the famous Supro lightning bolt or the logo of the Oahu brand which, at the time, was also manufactured and owned by parent company Valco. Although mechanically similar to the 6973 powered Supro version, the Oahu used a pair of 6V6 power tubes in its Class A output stage, achieving remarkable projection and clarity for a small format combo amp. With ample headroom for use