In Korea Soon-Mo organized a group build of more than 15 uTracers by tube amplifier enthusiasts!
Read an account of their adventure in Soon-Mo’s own words on my testimonial page.

Stephen Lafferty wrote a beautiful review article for his website and included the design of a high precision heater supply!!

Zbigniew Stelmasiak from Warsaw compressed the construction of a uTracer into 4 min! Have a look!

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Cartoon specially made for me by Ale Moglia!
More beautiful cartoons on his site Bartola Valves