Headphone Reviews

Shots fired!

Sennheiser's new PXC 550 ($399) Bluetooth noise canceling headphone is a direct shot across the bow of Bose's battleship Quiet Comfort 35 ($349) dominance of noise canceling headphones, which I reviewed very positively. Not only do Bose own a big chunk of that market, they consistently, in my opinion, have the best isolation and sound quality performance. Let's see if Sennheiser can put a dent in that armored hull.

In this survey, I'll be walking you through my listening experience of these headphones and making comments with in the context of how these headphones compare with each other—I listened solely to them until I compared a few other headphones at the end of the test.

I'm going to spend the week parsing the differences between a number of the variants of the Foster 443742 (seen on page H-4 of this .pdf). This survey will include: Fostex TH900, TH900mk2, and TH610; Massdrop THX00; Denon ADH-D5000; and the E-Mu Teak stock, and with optionally available Rosewood and Mahogany cups.

The ESP-9 is dual-powered: from the AC line, or from the input signal itself, The power supply is rather large and heavy, and appropriate in appearance to the phones. Amplifier connections are via wires with spade lugs attached, and speaker connections are made to the rear of the power supply. A front-panel switch selects speaker or headphone operation, and terminates the amplifier outputs with 10 ohms in the Phones position.

Construction is typically top-of-the-line Koss: Rugged, nicely finished, and apparently very durable, and the phones are easy to handle. (Many headphones are so loosely pivoted on their headbands that they swing into impossible positions whenever you pick them up.)

And then, at 21 second in, right after she sings, "When God gave out rhythm...", two chords are gently played on the piano. My goodness, I've never heard such sensitively percussive, harmonically rich, filled with weight and substance sound from a piano. Most astonishing is the interplay of tones, harmonics, and intermodulation making the whole of the chord a rich textured wave of sound. I was transfixed until track's end.

"Value packed" is not a word I typically use to describe a headphone. I really thought the Beyerdynamic DTX 350 m was great for the money; definitely a good value...but not packed with value. Sennheiser's HD 600 is an extraordinary value...but no carry case; doesn't have a mic/remote; isn't useful portably. Still a great headphone and an extraordinary value, but packed with value? Okay, maybe. HD 800 S? Great headphone, but no friggen way anything over $700 is "value packed." The Quiet Comfort 35, on the other hand? Oh yeah, this thing will be a delightful traveling companion with technological, comfort, convenience, and solid sound quality characteristics abundantly.