Bob Carver LLC announces a 20-watt stereo vacuum tube amplifier-- the Black Magic 20 (VTA20S), an amp the company "conservatively" rates at 20 WRMS (stereo mode) or 40 WRMS (mono).
It features a screen voltage regulator and DC restoration circuit minimising crossover distortion and output tube dissipation. 1.5 ohm output impedance and current and voltage feedback loops allow the amplifier to "listen" to the room via acoustic feedback from the speakers.
Frequency response is at 8Hz to 40kHz (-3dB), while full power bandwidth is at 26Hz to 43kHz (without filters) with less than 0.5% distortion.
Go Bob Carver Announces Black Magic 20 Watt Stereo Amplifier