Headphones and Earphones
- Written by Chris Groppi
- Published on 23 April 2009
- Denon AH-D7000 Headphones and Headroom Ultra Desktop Headphone Amplifier
- Page 2: Design of the Denon AH-D7000 Headphones and Headroom Amplifier
- Page 3: Setup of the Denon AH-D7000 Headphones and Headroom Amplifier
- Page 4: The Sound of the Denon AH-D7000 Headphones and Headroom Amplifier
- Page 5: Measurements for the Denon AH-D7000 Headphones and Headroom Amplifier
- Page 6: Conclusions about the Denon AH-D7000 Headphones and Headroom Amplifier
- All Pages
My first “high end” system consisted of Sennheiser HD-580 headphones, an original HeadRoom headphone amplifier, an Audio Alchemy DAC in the Box, and a Sony Discman with an optical digital out. I was a college student at the time, and there was no way of having a real, properly set up hifi system in my dorm room. It was clear to me at the time, listening to both my system and uber high end Hifi in shops, that my little headphone setup blew away many high dollar loudspeaker based systems. A headphone-based system is by far the least expensive way to experience truly great sound. Many of us can’t afford a hifi system costing tens of thousands of dollars. While the Denon AH-D7000 and the HeadRoom Ultra Desktop amp are not cheap ($2600 total MSRP), this complete system (just add disc player or computer) will absolutely KILL any normal hifi system I’ve heard costing less than $30,000. Sure, you give up the physical slam of bass, and the large soundstage, but the frequency response, tonal accuracy, speed and agility and even imaging and soundstaging (in their own way) are truly spectacular.
- Denon AH-D7000 Headphones
- Design: Over-the-Ears Headset; Sealed Enclosure
- Driver: Dynamic
- Isolation: -8 dB
- Impedance @ 1 kHz: 25 Ohms
- Connector Type: 1/4"
- Cord Length: 9.5 Feet
- MSRP: $999 USA
- HeadRoom Ultra Desktop Headphone Amplifier
- MFR: 10 Hz - 50 kHz ± 3 dB
- THD+N: 0.002% at 1 Volt Output
- Input Impedance: 70 kPhms
- Dimensions: 3.3" H x 6" W x 6" D
- Weight: 1.8 Pounds
- MSRP: $1599 USA with Astrodyne Switching Power Supply
I’ve been looking to upgrade my office listening environment. I have a HeadRoom Total Bithead amp with Etymotic ER-4S headphones that I use mainly for travel on the airplane. At my desk, the isolation of the Etymotics is so good I can’t hear my phone ring when the music is on. People can sneak up on me. On the other hand, my Sennheiser HD-595s I use at home for late night listening have no isolation, allowing office noise to intrude on the music. The Denon D7000s are the perfect compromise. They are sealed headphones with some isolation, which knocks down my computer fan and other background noise, but I can still hear my phone ring and people can get my attention.
I first heard the AH-D7000’s in HeadRoom’s room at the Rocky Mountain Audio Festival in 2008, and decided that I just HAD to review a pair. They were, by no small margin, the best sounding headphones in the HeadRoom display. There, they were paired with the Ultra Desktop Amp, which has HeadRoom’s premium amplifier modules, and their premium DAC. I was able to set up a review of this same system, and have lived with it on my office desk for a few months. To make a long story short, it is not going to leave.
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