Evolution Stereo Amplifier

The Evolution series Stereo Amplifier builds on successful V3 design. The Amplifier is a hybrid design with a solid state section based on a j-fet differential amplifier which drives a tube based output section based on the EL-34/6CA7 tube type. This unusual topology is used to create a amplifier with real world speaker drive capability of 65wpc while using only 2 gain stages and approximately 7db of feedback. The audio section is supported with a custom designed power transformer, regulated supplies and an innovative output transformer with separate screen windings to give the amplifier its sweet effervescent sound. Inputs are Single Ended/Direct or XLR balanced via a differential to SE converter.

The use of passive components that are rated for many times their actual dissipation which results in low thermal stress and heat modulation. Circuits that use the minimum number of gain stages and zero feedback where possible provide a level of realism and serve to preserve the beauty of the music.