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I have the Ultra 4C Preamp that came with an external tube rectified power supply. Unfortunately, I don't think that he still offers the tube rectification anymore. Regardless, it is a great sounding preamp and he offers customizing. For mine, I ordered the Auricap option and a mono/stereo switch.
I have the Ultra 4C Preamp that came with an external tube rectified power supply. Unfortunately, I don't think that he still offers the tube rectification anymore. Regardless, it is a great sounding preamp and he offers customizing. For mine, I ordered the Auricap option and a mono/stereo switch.