WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
Building, troubleshooting and testing of these amplifiers should only be
performed by someone who is thoroughly familiar with
the safety precautions around high voltages.
I own the matisse pre with 5670w tubes, its wonderful its so good I don't listen to my mark levinson preamp any longer, these make it even better ( mostly sonicly ) mundorf supreme .47uf caps its range is 120k to 5k on frequency range . got tired of not having a remote so I put the matisse in a preamp case with remote ( pga2311 preamp w case )