I've been in love with British sports cars ever since a visiting highway engineer brought a green MGB-GT to my tiny Nebraska town 30 years ago. Since then, there's been a steady stream of ferocious little cars in my life. Triumphs, MGs, Healeys, you name it—right up to my current crop, a Triumph TR6 and roughly two-and-a-half Jensen-Healeys.
I can't remember a time when I wasn't concerned about power quality. I grew up around finicky, home-brew ham-radio gear and labs full of instruments, and with both, power-conditioning gear was standard fare. When I moved into high-end audio, it seemed obvious that power quality was important. As a result, I've experimented with a wide range of power-conditioning equipment, from simple ferrite loops to huge isolation transformers, and even exotic laboratory power supplies that could vary the voltage, frequency spectrum, and shape of the AC signal.
"I've got the world on a string, sitting on the rainbow Got the string around my finger, what a life, Mama, I'm in love. Life's a beautiful thing, as long as I hold the string I'd be a silly so-and-so if I should ever let you go."—Ted Koehler
Stereophile editor John Atkinson said one evening in 1995, "What I find fascinating is that, in an industry as mature as audio cables, a new company can appear out of the blue and upset everything." He was gently poking fun at my admission that I found cable design fascinating, in particular the practice of combining different conductor materials.
I've had the pleasure of using The Direct Line Stage Line Stage (originally called the Director) from Ron Sutherland for the past few months. This active line-stage preamp (it has no phono section) is available from Acoustic Sounds for $3000.
When I went to my shelf of Stereophile back issues to find Paul Bolin's seminal review of the Halcro dm58, I was shocked to find myself leafing further and further back—through not only 2004 but 2003 as well, all the way back to October 2002 (Vol.25 No.10). It doesn't seem possible that it's been almost four years since Halcro exploded onto our radar screens, the dm58 emblazoned on that issue's cover alongside the banner headline "THE BEST AMPLIFIER EVER!"
VPI Industries' TNT turntable and JMW Memorial tonearm have evolved through several iterations over the last two decades. Some changes have been large, such as the deletion of the three-pulley subchassis and the introduction of the SDS motor controller. Others have been invisible—a change in bearing or spindle material, for example, or the way the bearing attaches to the plinth. And, as longtime Stereophile readers know, I've been upgrading and evolving along with VPI, most recently reporting on the TNT V-HR turntable (Stereophile, December 2001).
The original plan, back in mid-2004, was to audition an entire Ensemble system and then review the individual components over the next two years. Most audio companies produce lines of matching products, but Ensemble takes it a bit further, with a modular approach and extensive commonality of everything from chassis to circuit boards. They firmly believe that everything affects sonic performance, and their approach helps ensure a consistent sound throughout their line.
About once a week, I hear about some new audio accessory heralded by breathless claims of stunning performance gains that "you've got to hear for yourself." Most of these I ignore, and of those I do consider, nearly all wither when subjected to logical engineering analysis. Every so often, however, one of these wonder widgets finds its way into my system.
Life used to be simple. A preamp was a phono stage, a line stage, and the controls necessary to manage a system. Sure, there were exceptions, but for the most part you could say "preamp" and everyone knew what you meant. With the rise of the Compact Disc, however, phono stages became standalone components or optional extras, and most manufacturers concentrated on the line stage and controls, pursuing the ideal of "a straight wire with gain."