You are cordially invited to the Vacuum Tube Users Group meeting at the Randall Museum. We will audition a pair of push pull 6550 mono bloc tube amps that are designed for a future Randall Museum DIY class. I am still voicing the amps so your opinion would be appreciated.
In this meeting I will give a short talk about the amp’s circuit then a listening session comparing the 6550 with some classic push pull tube amps (Marantz 8b, QUAD II, Ampex 6973). The complimentary electronics are the Randall Linestage and Randall Phono playing a Fidelity Research FR1 Mk3 cartridge on a modified Technics SL1800 Mk2 through a Altec / Peerless 4722 transformer. The speakers are mid-fi Klipsch Chorus but are good enough to hear general differences between the amps. Feel free to bring a tube amp for comparison, I’m always open for a little friendly competition.
This meeting will also give you the opportunity to see and hear the Randall PhonoStage. I will be giving the phonostage class one last time (and this will really be the last time) this January.
Time: November 26, 2011 1 pm
Place: Randall Museum Auditorium 199 Museum Way, SF, CA 94114
http://www.randallmuseum.org/HoursAndDirections.aspx Presenter: Ed Yang randallphono@yahoo.com
