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SOLD - FOR SALE: BB100 Push-Pull Integrated by Bill Beard
The BB100 by British Built Audio Products (BBAP) is a hefty, single-chassis dual mono integrated linestage, conservatively-rated at 2x50-watts.
There are four ECC 81s and two ECC82s in the pre-amp section. Each channel in the pre-amp employs one ECC81 in the driver stage, another '81 as a phase splitter and the '82 as a cathode follower. Power comes from three parallel 'push-pull' pairs of EL84s per channel, presenting a very low (2.6k ohm) output impedance to the output transformer for easier driving conditions. The heaters for every valve in the BB100 are fully DC regulated. Using common and cheap off the shelf valves it runs very quietly with heaps of headroom.. Hybrid grid and cathode biasing eliminates the need foe manual biasing.
4 linestage inputs a side.
The glow from 18 tubes in the dark is spectacular. It is almost a true dual mono design, sharing only a master gain control, and double wound mains transformer. Each channel has a seperate gain control for fine tuning.
It is in very presentable condition, but has a minor scratch in the chrome base in the 3rd row of valvesl, not really noticeable.