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Not long ago I wrote enthusiastically about the Bose SoundWear Companion neck-worn speaker. It was my first experience with such a device and it was, and continues to be, a very pleasant one. Way better than I expected. So, I figured I should look into some of the other options for this new type of device.

JBL was kind enough to send me their Soundgear—a $100 less expensive alternative to the Bose. Having experience only one other device of this type, it's probably best just to compare and contrast the JBL directly with the Bose for this review.

Such was the case with the Delaware Acoustics DELAC S10, which costs $629/pair. Only sold factory-direct, this would therefore have been low on Stereophile's priority list for review if it weren't for two things: first, the fact that the S10 was designed by one Ralph Gonzalez, a name that should be familiar to readers of Speaker Builder magazine for having written a very useful speaker design and analysis program; second, as implied in the first paragraph, the S10 is one of the weirdest speakers I have ever laid ears on.

So today we'll pick up on this principle and briefly compare the sound qualities of six very different headphone amplifiers, concentrating on their headroom, impact, perceived loudness, detail, and depth. Then, in the next episode, I'll try to make sense of the listening and see if there is any correlation between what we measure and what we hear. Don't expect a miracle—listening versus measurements is an ongoing debate, but in Episode 22 I promise to reveal some tantalizing clues!