Tube Preamp SMPS

[DummyLoad]

Nifty little DC-DC converter - 9V > 250V + 6.3V - Rated at 250V 15mA / 6.3V @ 1.5A. Works really well. Have a 12mA R load on the HT (22KΩ 6.5W R), and about 1A on the 6.3V output. Pics in link. Performs well, about 100-150mV ripple on the HT output. link to part on Amazon. Beware, that the power source (5.5mm x 2.5mm jack) the tip is (+), and not tip (-) like for pedals. May build a guitar pre with it. Use a polarity inverting cable to use pedal wall-wart. 

Link to pics.

Link to SMPS on Amazon.


--Pete