Editor Marten Schulp from Dutch magazine Bassist wrote a review about the new Hevos 2×6 combo and cabinet. Headline said: ‘no tweeter noise, no amp humming, no fan hiss’. All of that is correct, only the leds in the front of the amplifier show whether it is turned on.
But much more important is how these little devils sound. The review (in Dutch) can be found here. Anyway, all Hevos combos are equipped with the same 400C combo amplifier.