Strauss Amplification. Australian amps from the 1960s.
Gary Nessel and John Woodhead founded the Strauss Sound Systems company in Melbourne in March 1962. They manufactured guitar and bass amps from day one and PA amps and boxes from late 1962. The ‘Warrior’ and ‘Hurricane’ guitar amps and ‘Bandit’ bass amp were to become the prime choice of musicians across Australia. They built large-scale sound systems from Altec Lansing designs, powering them with huge Strauss valve amps and using Strauss active crossovers. They built their own mixers and were well in advance of their Sydney counterparts. In 1969, the company name was changed to NOVA SOUND. [Source: Greg, ABC Collectors ]
Strauss info and examples at Ozvalve Amps
Image Strauss SVC 30 eBay: