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Old

Who created the first headphone amp?

Posted 11-02-2009 at 04:07 AM by Currawong

An interesting thread from 2007 was bumped on this very subject.

Short answer seems to be: Stax in 1960 with the SRA-4S, as electrostats require a special amp:



but for dynamic phones, excluding pro gear with headphone outs, probably the Sure Solo-phone.



After that, Grado designed the HP-1 for the HP-1000s just before HeadRoom...
Currawong's Avatar
Headphoneus Supremus
Views 106 Comments 1 Currawong is offline
Old

The eXStata DIY electrostat amp first review.

Posted 10-07-2009 at 10:25 AM by Currawong

It seems that the eXStata DIY electrostat amp is already exceeding expectations, using only $350 or so of parts, including the case. HeadphoneAddict has provided us with a short review mid-thread thus:

Quote:
Originally Posted by HeadphoneAddict View Post
The eXStata is a great amp, but it was so highly detailed that we could hear jitter (grainy griity in the highs) with the Apple TV on Saturday, which at first was more difficult to pick up with the GES until 3 hours into the meet, making us have to change the transport to a Macbook
...
Currawong's Avatar
Headphoneus Supremus
Views 188 Comments 0 Currawong is offline
Old

Grado HF2 “i” DIY Mods

Posted 09-27-2009 at 02:00 PM by Currawong

cafe zeenuts has been experimenting with the best combination of Grado Jumbo pads ("bagels") with his HF-2s to bring out the soundstage, and materials to cover the driver with to reduce the resulting sibilance. I'm definitely going to try this myself and try a few local materials as well to see how things go.

Currawong's Avatar
Headphoneus Supremus
Views 229 Comments 1 Currawong is offline
Old

Pico Slim Prototype pictures.

Posted 09-26-2009 at 12:36 PM by Currawong

Justin@Headamp recently demoed a Pico Slim Prototype at a mini-meet, which can be seen here next to an iPod touch and with Boomana's JH-13 customs. Justin has stated that he has managed to find a marginally thicker battery for it with 34% more capacity, giving it 60 hours of music playing time between charges. Pricing has yet to be announced, but there will definitely not be a version including a DAC, and as it charges from a USB port, a power adaptor will likely not be included.

...
Currawong's Avatar
Headphoneus Supremus
Views 289 Comments 0 Currawong is offline
Old

Amarra DOES work through the optical digital output of a Mac.

Posted 09-12-2009 at 07:01 AM by Currawong
Updated 09-12-2009 at 07:04 AM by Currawong

I don't recall exactly where, but some or other person incorrectly stated that Amarra doesn't work from the optical digital output of a Mac. However, this contradicted my own experiences when testing it. A friend of mine, the proud owner of a Berkeley Alpha DAC, interested in borrowing an Amarra dongle from his local hi-fi store, with which he is well acquainted, called up Amarra directly to confirm matters. The result, direct from the horses mouth is, yes, it works through the optical digital...
Currawong's Avatar
Headphoneus Supremus
Views 195 Comments 0 Currawong is offline
Old

Ok, here we go again: Beyer T1 impressions and pictures list.

Posted 09-05-2009 at 02:09 AM by Currawong
Updated 09-06-2009 at 12:58 AM by Currawong
Tags beyer, tesla

As usual, I'm providing two links, one to the post in the thread, and one to the individual post page. This thread will be updated as I come across others. Please PM me if I miss any.

m00hk00h was first, with a trip to the IFA. 1st: Thread | Post
2nd listen and DT880 comparison: Thread | Post
m00hk00h's pictures: Thread | Post

My thoughts: He said that angled drivers in headphones for him produce a smaller soundstage, before anyone gets the idea that his...
Currawong's Avatar
Headphoneus Supremus
Views 680 Comments 0 Currawong is offline
Old

Beyerdynamic announces a new flagship, the T1.

Posted 08-25-2009 at 01:24 AM by Currawong



Just when we'd gotten over the HD-800s, PS1000s and JH-13s, Beyerdynamic came out of nowhere (we were expecting AKG) and announced the Tesla 1 Headphones. Like the HD-800s, they use a radically re-developed diaphragm, but in this case, moving the magnets to the outside of the diaphragm instead of the centre.

What this boils down to is, much greater sensitivity, despite...
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Headphoneus Supremus
Views 2133 Comments 0 Currawong is offline
Old

The ultra-slim portable amp market is about to explode.

Posted 08-24-2009 at 05:29 AM by Currawong
Updated 08-24-2009 at 05:34 AM by Currawong

A couple of days ago, Ray Samuels posted the first pictures of a completed (case prototype) Shadow portable amp. Compared to the already tiny Mustang, it is surprisingly smaller:



However, the real shock yet to come, Justin from Headamp, a mere 19 minutes later posted a picture of his new prototype case, which is smaller than what he originally planned, so much so, that it's thinner than an iPhone!...
Currawong's Avatar
Headphoneus Supremus
Views 482 Comments 0 Currawong is offline
Old

Fukuoka, Japan micro-meet #3: HD-800 vs. Stax

Posted 07-26-2009 at 12:22 PM by Currawong
Updated 07-26-2009 at 12:25 PM by Currawong
Tags hd-800, meets, stax

I'm re-posting this from the thread, since many people are interested in how HD-800s compare to Stax (electrostats). With any luck, we might be able to do a brief Sony R-10 comparison in the future.

Quote:
Originally Posted by Currawong View Post
Ok, today was micro-meet #3 (we didn't get very far with #2).

The purpose this time was for LobsterSan (Craig, whom I hope doesn't mind me using his real name) to compare my HD-800 rig with Stax and his HF-1 rig, as well as trying a few headphones on the Phoenix, including
...
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Headphoneus Supremus
Views 426 Comments 0 Currawong is offline
Old

Looking for HD-800 Connectors?

Posted 07-11-2009 at 01:33 PM by Currawong

Funnily enough, the info has been available for some months. They have been confirmed as custom connectors made by ODU.

Quote:
Originally Posted by wnmnkh View Post
So, I am writing here instead of that big thread on headphones forum, since probably this may buried and no one would noticed. Move or merge this if you feel this thread is not suitable to be here.

So, after searching, I successfully contacted a company which make HD800 cables for Sennheiser.

After some e-mails, here's what they say about
...
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Headphoneus Supremus
Views 263 Comments 0 Currawong is offline

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