This is the 15th one of these that I've built to date, a clone of the Noble Bass Preamp, by Conspiracy to Commit Electronics (aka SushiBox).When Nathan at Sushibox was selling them pre-built (now sold out), his price was $600 + shipping. He used JJ 12AU7's in his version but I used NOS GE triple mica long plate 5814A's (low noise 12AU7's, an upgrade from JJ's) in this one. This is an absolutely gorgeous sounding preamp for bass. Built with high quality components (black aluminum knobs, Lumberg DC & 1/4" jacks, teflon coated wire, Unagi (Sushibox) transformer for the XLR direct out, WIMA capacitors). It requires a standard 9 volt center negative power supply and contains an internal circuit to run the tubes at high voltage drawing 507ma when fully warmed up, (DO NOT use a power supply higher than 9 volts!). 9 volt power supply not included but I run mine with a Truetone 1spot.
Input, output and DC power are on the top with a transformer XLR direct out with a ground lift switch on the left side. The blue trimpot inside on the lower left adjusts the level of the DI.
With Noble preamps selling for $2K these days, this preamp is an absolute bargain.
