Dating standel amplifiers
Actually, the Taurus, Scorpio, Libra, and Gemini comprised the follow-on "Zodiac" line and were built with many of the leftover components developed for the first S/S debacle.
Thus, they should be regarded as "Transistorized Fenders - Redux".
Sundholm enlisted the help of his brother Conrad to help solve his problem.
By 1964, the Sundholm brothers had designed a high-powered concert bass amplifier.
Gross National Productions was the East Coast promo band for Sunn in 1971.
Fender acquired Sunn in 1985, relocating operations from Tualatin to Lake Oswego.
The stated intent was to both revitalize the Sunn amplifier lines and to produce some Fender-branded models as well, which included the Standard Series (Princeton Chorus and Ultra/Ultimate Chorus, both solid-state) and M-80 Series, and are identified as USA-made amplifiers with an "LO"-prefix serial number. The band Sunn O))) was named after the company (to the point of including a typographic representation of the logo).
I'm sure some have survived, but since they weren't a sound people cared for at the time and were of questionable design/production, I'm guessing most ended up in the dumpster.I've got a stack of old Guitar Player mags I've had for years, some going as far back as the late 60's. The majority of these amps died a mercifully-quick death once they were sold, the company's reputation for fielding quality gear took it in the shorts, and the entire line was unceremoniously retired after only a couple of years of production.On the back cover of one from 1969, there'a an ad for the new Solid State line of amps from Fender. Many of the components developed for these transistorized amps were recycled to become the equally-dismal "Zodiac" line, which also failed to draw any market share. 1962-1963 * Blonde or dark (smooth-textured) covering in equal use. 1963-1964 * Dark cover standard, texture varies between smooth dark grey or black to basketweave texture. * Strap handles with “Vox” logo appear in mid-1964. * Top Boost controls integral with control panel early 1964. * Mains selector changed to five-way rotary switch type. 1966-1967 * Metallic black ventilators used late 1966. * Changed to silicon rectifier system, GZ34 valve deleted. 1961-1962 * Blonde covering with occasional black, red or blue samples. * Occasional “Top Boost” units fitted in rear-panel with Treble and Bass controls operable. * Speaker color-change to silver for Lead units, remains blue for Bass units.