Profile: Balanced Audio Technology, Inc. specializes in offering preamplifiers, amplifiers and CD players for the music industry. The VK-3iX preamplifier design is centered around the ability to preserve subtle musical nusaince as well as it conveys musical pace and excitement. Vacuum tube current sources remain in the power supply to contribute to the VK-3iX's ability to portray the natural color and emotion of the musical performance. The power supply of the VK-3iX delivers a sizeable increase in energy storage to offer a complementary increase in low-end heft and authority. The balanced audio technology VK-55 provides a automatic-bias circuit found in our reference VK-150SE tube power amplifiers. This advanced design eliminates the traditional headache associated with the ownership of vacuum tube power amplifiers, the constant need to set and readjust the proper bias of the output tubes. The automatic bias circuit automatically compensates for tube warmup, aging or partial mismatching of tubes as well as fluctuations in line voltage.