The new Tentlabs / Vanderveen circuit offers rock-solid bias, independent of tube aging, music signal, or mains power voltage changes. The modules bias up to 4 tubes at exactly equal currents, with the setting of only 1 trimmer. All classes of output stages can be biased, A, AB or B, triode, tetrode or pentode, single-ended and push-pull.
Result areas are:
• better imaging and stage due to lower hum land noise level
• better bass due to near-perfect (<< 1% error) current matching in push-pull stages
• Better resolution and imaging due to optimized left / right channel matching