Headphone Reviews

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Apple AirPods Pro 2 noise-canceling, wireless, in-ear headphones

You won't see many Apple products in these pages, and for good reason. As Stereophile Editor Jim Austin wrote to me recently in an email, "Apple may have the best acoustic-design facilities in the world, but its products are designed by engineers who don't seem to respect perfectionist sound—which is appropriate for a company that aims for the vast middle of the bell curve." Has that changed?

Gramophone Dreams #62: Dan Clark Audio Stealth & Warwick Acoustics Bravura headphones


I am an artist by trade. Saws and brushes and cameras are some of the tools I use. The aesthetic quality of the things I make is determined not by my skill with tools but by the dynamic relationships I establish among space, color, tone, and shape.


Of those elements, shapes are the most important because they are the first thing a viewer notices and the chief vehicles for transmitting sentiment and artistic intent. Stylized shapes, like those in popular art, may induce superficial responses in the viewer. Taut, Euclidian shapes suggest their author is of a higher mind; the Parthenon and Pantheon exemplify this type of shape making.

Gramophone Dreams #58: Stax SR-X9000 headphones, EAR Phono Classic, Bob's Devices Sky 20 SUT

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."

Three March 2022 FollowUps: iFi, Pro-Ject, Canton

One reason Stereophile publishes a FollowUp is when the original review leaves an issue unresolved or where further thoughts would be useful. Such was the case with the magazine's March 2022 issue, which had followup reviews on the iFi ZEN CAN headphone amplifier and ZEN DAC Signature V2 D/A processor ($599/pair). the Pro-Ject Phono Box RS2 phono preamplifier ($1999), and the Canton Reference 7K loudspeaker ($6995/pair).

Questyle Audio M12 portable USB D/A headphone amplifier

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.

Gramophone Dreams #57: Ferrum OOR headphone amplifier and HYPSOS power supply

I'm deep into audio power amplifiers because they remind me of race car engines. Both power sources are wildly inefficient, converting only a small percentage of their stored energy into work while dissipating the rest as heat and vibration. Mainly though, I love how race car engines sound. How they shake the air. Just like amps and speakers.

iFi ZEN CAN headphone amplifier & ZEN DAC Signature V2 D/A processor

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.

Gramophone Dreams #56: Woo Audio 3ES preamplifier/headphone amplifier and Audeze CRBN electrostatic headphones

At noon on a cloudless, ridiculously bright 97° day, John Atkinson and I auditioned Audeze's new-but-not-yet-released CRBN electrostatic headphones. The audition took place at a sneak preview hosted by Audeze's principal, Sankar Thiagasamudram, in a sleeping room at New York's hipster-chic Ace Hotel on 29th Street and Broadway.

Gramophone Dreams #53: RAAL-requisite HSA-1b headphone/loudspeaker amplifier


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
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