Cascaded Gain Stage Amplifier Design

A few of my friends and customers have amplifiers that are based on the Dumble Overdrive Special, made by Ceriatone and Bludotone.  In contrast to my current designs they are very much 'clean and lead' with very little breakup from the power valves.  I took the opportunity to spend some time with them to try and discover what the fascination and mystique of these revered designs was all about. 

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