Saturday, 01 November 2003
Christopher Zell, Ph.D.
have always considered Nelson Pass one of the founding figures in
high-end audio. He has a long history of innovative amplifier and
preamplifier designs, dating back to the ‘70s with one of the first
successful high-end corporations, Threshold. I am very familiar with
Pass’ amplifiers, and have owned a variety of Threshold components
through the years. I have also kept an eye on his very active DIY
career, which includes informative design articles and numerous DIY
projects. Not having any exposure yet to any of the products from his
latest company, Pass Laboratories, I was very curious and enthusiastic
about auditioning the subject of this review, the X150.5 stereo power
amplifier, and indeed I had high expectations to meet. Although the
X150.5 is the baby in the current X series of amplifiers, it is by no
means small in any way, specified at 150 watts per channel into eight
ohms, and priced at ...