Vibrato

Original Schematic Diagram and Parts List for Kay 704

June 3, 2012

Just uploaded and added the original factory diagram and parts list to my full review of the Kay 704 Vanguard amp.

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Kay 704 Vanguard Reviewed

December 23, 2011
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Share This:As a follow-up to a previous post, we just posted a new review for a 1965 Kay Vanguard 704 amplifier. Check it out here! Kay 704 Vanguard with Vibrato

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A Briefcase Full of Blues

March 28, 2011
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The Kay 704 Vanguard with Vibrato was the world’s first all transistor solid-state guitar amp, introduced by Kay Musical Instruments in 1962. Based on traditional tube amp design of that period, the vacuum tubes were replaced in the hand-wired circuits with seven germanium transistors and four diodes.

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