Hello Hermann, > Thanks for the link. > > I've give it a shot, and it sound's nice so far. Will be soon in the > collection. :-) Nice! > I wonder if you build it with a 40V or a 60V power supply? 40V charge pump but I've just got all the components in to build a 60V one. > This makes a huge difference here in the simulation. > > For reference here is the frequency plot of the BoobTube at 40V > > https://www.directupload.net/file/d/5293/dypm55xc_png.htm > > and here with 60V > > https://www.directupload.net/file/d/5293/hc2ywbbz_png.htm So looks like the 40V version boosts the lows a bit more while the 60V version has slightly more highs? I'll check if I hear any significant differences. > and this is the response of the ValveCaster (12V) > > https://www.directupload.net/file/d/5293/l8jhh3sv_png.htm I checked the ValveCaster first but the BoobTube simply has better reviews and is not that harder to build. Jeremy For those interested some build pics: https://monasfx.com/_media/builds/vero/boobtube_external.jpg https://monasfx.com/_media/builds/vero/boobtube_internal.jpg
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