Key Kim of The StereoTimes concluded:
"...I really enjoyed my time listening to the Audio Valve Challenger mono-block amplifiers. The amp had no problem driving the Consensus Conspiracy and the Lyra loudspeakers with great control and finesse. Hats off to Helmut Becker! I highly recommend the Audio Valve Challengers. It is fine German engineering that comes with sensible pricing in today’s high-end audio arena..."
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