For Sale: Abacus Audio Aikido Tube Preamp. This is the 6GM8 version, not the 12AU7 version.The preamp is based on the John Broskie Aikido tube preamp Circuit - specifically the LV Aikido circuit (low voltage). The 6GM8 (6N27 / ECC86) tube is perfect for this low voltage application - 24 volts B+. More technical info on the preamp Design:
https://glass-ware.stores.yahoo.net/aikidolv.html You could drop in another tube like the 6922 or 6DJ8 (do not put in a 12AU7, you will destroy one of the two triodes), but those tubes are best run with higher B+ Voltages...the best tube is the 6GM8....and unfortunately they are not cheap. Comes with one extra 6GM8, and programmed remote that does volume, input, power and mute. Audition possible for those in Chicago area.
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