Arcam rHead Class-A Analogue Headphone Amplifier
May 30, 2016 at 7:23 PM Thread Starter Post #1 of 221

Arcam-Voice

Member of the Trade: Arcam of Cambridge UK
Joined
May 23, 2016
Posts
37
Likes
14
UPDATE - NOW IN UK RETAIL 6/07/2016 - USA Soon at $600 USD
 
Designed by legendary amplifier designer John Dawson, the founder of Arcam of Cambridge, the rHead is Arcam's first dedicated headphone amplifier. A
 discrete true-linear Class-A analogue amplifier, designed 
for the highest possible performance at an affordable price of £400 GBP (USA TBA)
 
​Arcam have been building sophisticated headphone stages into their amplifiers for over 40 years, a far cry from the afterthought implemented by most manufacturers. The most recent $6000+ A49 has an integrated high-end headphone amp and that module has been successfully used in the irDAC-II USB DAC/Headphone amp. 
 
To go one huge step better, the rHead started as a clean-sheet design and this small, solid, beautifully built product
 delivers enough power to drive small speakers, let alone the least-efficient headphones. It is the epitome of ultra-low noise, ultra low-distortion refinement, rather than a brute force brawler.
 
REVIEW TOUR USA AND UK IS FULL - please comment to reserve a place in Round Two
 
Outline Features and Base Specs
 
- Class A design delivers absolutely no crossover distortion for absolute audio purity. 
- Extensively optimised PCB layout for cleanest sound
- Multiple, ultra-low noise power supplies eliminate cross-interference
- Fully direct coupled signal path for cleanest bass
- Ultra-linear resistive-ladder analogue volume control, eliminates L/R volume tracking errors (taken from Arcam’s flagship A49 amplifier)
- Enough power to drive the least-efficient headphones


 
- Phono and XLR inputs
- 3.5mm and 6.25mm headphone outputs 
- Built like a tank with a design life of decades 

 
Frequency response - 10Hz - 20kHz 
Total Harmonic Distortion + Noise - 0.001% at 2V output, 32Ω load 
Signal-to-noise ratio (A-weighted) - 109dB at 2V output, 32Ω load 
Output impedance <0.5Ω 
Headphone output power 
- 2.0W, 16Ω load 
- 1.1W, 32Ω load 
- 0.13W, 300Ω load 

 

 
 
ABOUT: Arcam of Cambridge - 40th Anniversary Year 2016
One of the pioneers of the Hi-Fi industry, Arcam have been building world-class products for over 40 years. Noted as one of the world’s most prestigious AV engineering companies and an authority on Digital Audio, Hi-Fi and Home Cinema, Arcam is headquartered in Cambridge UK.


 
MUSICAL above all
Arcam don't build equipment to impress on one quick listen. Arcam gear is musical and enjoyable over years and years of listening. Many competing products are very 'Hi-Fi' but don't play music in an enjoyable fashion. Arcam sound gets more involving and musical the longer you listen









 
 
 

 
Jun 4, 2016 at 3:48 PM Post #7 of 221
How do you all think this amp will fare for IEMs?
 
Jun 9, 2016 at 7:14 PM Post #11 of 221
Here are some notes from John Dawson the designer of the rHead
 
"I planned the rHead as a “one size fits all” amplifier without the need for the preset attenuators which are found on the back of many high end headphones amplifiers. These are fitted to try to optimise the usable dynamic range of both highly efficient earbuds (especially moving armature types like Etymotics) and very insensitive headphones such as planar magnetics."
 
"The wide dynamic range of the rHead’s electronic volume control (from memory we use an 80dB range including both attenuation and gain) allows us to drive/cope with headphones of widely differing sensitivity without the added complication of such presets."
 
Jun 10, 2016 at 6:15 AM Post #12 of 221
Sign me up for the tour list!
 
Jun 10, 2016 at 8:31 AM Post #13 of 221
Hello, I'm game. I've been on a number of these tours and they are always fun.
 
I imagine that you will need to have some selection criteria for your candidates and a history of reviewing would be helpful.
 
I suggest telling people to reply with the following information (I've filled in mine), and stipulate that a review is expected on HeadFi in the Headgear forum:
 
HeadFi username: glassmonkey
Location: United Kingdom
Previous Reviews: 
http://www.head-fi.org/products/audio-opus-opus-1/reviews/16109
http://www.head-fi.org/products/airist-audio-heron-5-headphone-amplifier/reviews/15749
http://www.head-fi.org/products/obravo-erib-2a/reviews/15724
 
I have more reviews, and by the time this starts I should have even more.
 
I hope I get to participate in this tour. 
beerchug.gif
 
 

Users who are viewing this thread

Back
Top