Headphone Reviews

Since the 1980s, I've been asking every speaker designer I meet, "What amplifier do you recommend using with your speakers?" Annoyingly, they always say, "My speakers are easy to drive. Any amp will do." Whereupon I'd whine, "Aww, come on man, don't feed me that. What amp did you use when you were designing the speaker?" The closest any manufacturer came to providing a real answer was Wendell Diller of Magnepan, who, when I reviewed his .7 quasi-ribbon speaker, said, "We used an amp of our own design. It's not for sale. But any amp that doubles its power into 4 ohms will be fine." Wendell's answer helped me choose effective amplification and feel more confident about my conclusions.

Unlike loudspeaker manufacturers, headphone manufacturers know that which amp a reviewer uses could make or break a review of their product. So, wisely, they seem grateful when I ask for guidance.

I have a peephole in the door to my first-floor apartment. It looks down a straight hall to a glass wall framing the front door of my building. For 13 years, its job has been to let me see who is ringing my buzzer and who is making a racket in the hall.

A month ago, I ran into my Russian neighbor in the hall. As usual, he asked me what I was reviewing. (Vladimir likes to come over and listen, then find fault with everything I play.) When I told Vlad I had Stax's new top-of-the-line earspeaker, the SR-X9000, he lit up and exclaimed, "I need to hear it," adding that he has been a lifelong Stax fanatic and owns at least five different models, "dating way back."

There are words that, for reasons I can't fathom, I cannot stand. One such is "dongle." So when Bluebird Music's PR rep emailed me to ask if I would be interested in reviewing a new dongle from Chinese company Questyle Audio, I shuddered. But I must admit that "dongle" rolls off the tongue a lot more readily than "portable USB D/A headphone amplifier." I put aside my grammatical quibble and agreed to a review.

It had been a while since I'd done any serious, critical listening through headphones. That changed when Editor Jim Austin asked if I wanted to review the iFi Audio ZEN Signature Set ($599). Figuring I could use more Zen in my life, I agreed.

UK-based iFi Audio, which operates under the auspices of the Abbington Global Group, has released several compact products in its ZEN series: DACs, headphone amps, a Bluetooth receiver, and a network streamer.

Today is Monday. Since Saturday, I have changed the amplifier driving my Falcon Gold Badge LS3/5a speakers three times—from the Parasound Halo A21+ (250Wpc into 8 ohms) to the Pass Labs XA25 (>25Wpc into 8 ohms) to the Elekit TU-8600S (9Wpc into 8 ohms). Now I am listening to the Falcons via the just-arrived RAAL-requisite HSA-1b headphone and speaker amplifier. This unusual, made-in-Serbia amp is priced at $4500. It's specified to produce 10Wpc into 8 ohms, 20Wpc into 4 ohms, 40Wpc into 2 ohms, and 55Wpc into 1 ohm, these values from the loudspeaker output

The June 2021 issue of Stereophile included followup reviews of two recommended components, both which deserved further investigation of what they had to offer: the dCS Bartók D/A processor and the Schiit Audio Sol turntable.