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"The VTA20S represents Bob's latest and greatest thinking on vacuum tube amplifier designs. This amplifier has many deluxe features not normally found in lower cost units," says Bob Farinelli.
A screen voltage regulator and DC restoration circuit minimizes crossover distortion and output tube power dissipation. The 1.5 ohm output impedance coupled with current and voltage feedback loops also allows the amplifier to listen to the room via acoustic feedback from the speakers.
The new stereo amplifier
is conservatively rated at 20 WRMS in 2-channel stereo mode or 40 WRMS when used in single-channel mono mode. The amplifier features auto biasing and low idle current greatly increasing EL84M output tube life.
The Black Magic 20 will ship in July for $2,100.