What is the difference between the original TubeDriver amplifiers and the new TubeDriver BLUE amplifiers?
Top of Page A: The original TubeDriver amplifiers were a hybrid design developed by BK Butler. They used pentode 6L6GC tubes driving MosFETs in a unique circuit topology. Although it was considered to be a hybrid tube design, it was actually very unique in its operation. TubeDriver BLUE amplifiers are a revolutionary new design patented by BK Butler. They are the end result of 25 years of experience in designing tube driven products for some of the world’s most demanding end-users; professional musicians. They employ 6SL7GT twin-triode tubes directly coupled to the speaker and mated to audiophile-grade bi-polar devices to produce an amplifier that combines all the highly-desired sonic characteristics of the best in tube amplification (punch, dynamics, liquidity, detail) without any of the limitations (heat, wear, low power, rolled-off frequencies) AND have all the advantages of the best solid state amplifiers (power, current delivery, transparency) without any of the limitations (harsh
