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Fostex TH900 Flagship Dynamic Headphones

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The TH-900 is the first high-end headphone from Fostex. They feature a newly designed driver unit with a 1.5 tesla magnetic circuit and bio-dynamic 50mm diaphragm. Traditional Japanese lacquered "Urushi" finished craftsmanship housing and a selected 7N OFC cable come standard.

The Fostex TH900 is a very linear headphone from the top to the bottom of the frequency spectrum. It does not have recessed midrange or an overpowering bottom end. It is a true reference headphone and a perfect fit for mastering engineers that need a true representation of the music. It is not overly analytical but truly transparent.

For this reason, Drew recommends the Silver Dragon V3 headphone cable as the perfect signature match to take the TH-900 to another level of resolution. It provides just the right snap to the bottom end to control and speed up the bass signature for a perfectly accurate, bottom end. It also adds more depth to the presentation, another layer of clarity, plus, more air to the vocalist's breath and picking of the stringed instrument(s).

The Fostex TH-900 and the Silver Dragon V3 are such a wonderful combination with such synergy and they truly take music appreciation and headphone enjoyment to another level of "ear opening experience", Drew Baird, P.E., President/CEO of Moon Audio.  We think you'll agree....

hi-fi+ Review of the Fostex TH900 By: Alan Sircom 


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Unique designed Neodymium magnetic circuit adopting the magnetic repulsion system with the 1.5 tesla (15,000 gauss) magnetic flux density to achieve wider dynamic range

Foster / Fostex's unique "Biodyna" diaphragm* for fine and high resolu-tion sound reproduction

The housings are made of Japanese Cherry Birch (Betula Grossa), the Japanese specialty with rigid and dense texture for maximum acoustic performance

The housings are finished by the traditional "Urushi" lacquer (a.k.a. Japan) by a 100 years old artisan group.

The finish used for the TH-900 is called "Bordeaux" and is simply stunning

Platinum foiled "Fostex" logo on the housings

The ear pads are made of protein leather made from eggshell membrane for maximum confort

The cord is made of 7N grade (99.99999%) OFC (Oxygen Free Copper) and duralumin plug case for higher durability

Comes with an elegant headphone stand in the package


Additional Info

  • Unique Neodymium magnetic circuitry for wider dynamic range.
  • Fostex "Biodyna" diaphragm for fine and high resolution sound reproduction
  • Japanese Cherry Birch (Betula Grossa) housings with traditional "Urushi" lacquer
  • 7N grade (99.99999%) OFC (Oxygen Free Copper) cords
  • 1 year warranty

Drew's Recommendations

Drew Recommends the Silver Dragon V3 Headphone Cable as the best upgrade for the Fostex TH900 Flagship Dynamic headphone.

For best sound quality, Drew also recommends:

April Music Eximus DP1 DAC Amplifier 

B.M.C. PureDAC

Bryston BHA-1 Headphone Amplifier


Type:    Dynamic
Driver:    50mm dia Nd magnet
Impedance:    25 ohm
Sensitivity:    100dB / mW
Maximum Input:    1,800 mW
Reproduction Frequency:    5 – 45k Hz
Weight:    400g (excluding the cord)
Cord:    3m Y type 7N-OFC
Plug:    6.3mm dia gold coating stereo phone plug
Accessory:    Headphone stand


Fantastic Choice Made for Me by Drew!Review by Michael - The Old Mad Dog
Living in Denver, I always attend CanJam. This year, I went for the sole purpose of purchasing the Audeze Lcd-XC because I forgot to order them after the 2013 CanJam. I ran into one problem - at the age of 63 the joints in my neck are terribly arthritic and Audeze is just too heavy.

Drew had me try the TH900 because they were lighter. I ordered on the spot. Oh my gawd! My pair with the Silver Dragon and the adaptors for balanced listening or 1/4 inch amps arrived on Friday and they are incredible.

As everyone says, they are incredibly linear, more than enough bass and the soundstage is wide and fantastic. They don't even sound like a closed headphone. One drawback - the treble is a little "hissy". I'm chalking that up to not being broken in and the Schitt Lyr I'm using right now.

Everything I'm listening to sounds fantastic. All hi-rez files including Dusty Springfield, Bob Dylan, Canned Heat, Arianna Grande, Jesse J, Black Sabbath, Blind Faith, Deep Purple, American Authors, Neon Trees - they all sound great.

I just need to find the amp/dac combo that works the best with the TH900. The simple solution will be to e-mail Drew. He's sold me three pair of headphones (all for different purposes) and hasn't steered me wrong yet.

My gosh, closing your eyes and listening to Dusty Springfield through the Fostex is just like being in Memphis next to her. (Posted on 10/30/2014)
Highly Recommended with HUGOReview by Howard
I asked Drew what he would recommend to use with my HUGO. He quickly responded and there was no hesitation in his response. He recommended the Fostex TH900 with his remarkable Silver Dragon.

The HUGO is a remarkable DAC, whether being used in one's main system or as a portable. When matched with the FostexTH900 the sound is sublime. I have heard some claim these cans are recessed in the midrange or somewhat bloated in the bass, but I find no such issues. I have tried the HD800s with the HUGO and while they are obviously excellent headphones, in my opinion, the TH900 is the better match. I have never heard the TH900 with the factory cable so I am not sure if some of the comments regarding "V shaped" frequency curve is a result of the factory cable, BUT, with the Silver Dragon, I find a wonderfully linear and coherent sound with extremely accurate timbre.

My home system includes ARC, MSB Diamond Plus and Nola Concert Grands and while the HUGO is no Diamond Plus, it is close enough to make it the best deal, IMO, on the market. The TH900 plus Silver Dragon V3 headphone cable, the HUGO & my iPhone as a source brings a smile to my face almost equal to my home system. I love the combination. Plus, they are gorgeous. (Posted on 9/15/2014)
Silver Dragon V3 SOUND is OUTSTANDING with the Fostex TH900 - adapter cables tooReview by Koth

You and your team at Moon Audio brew pure magic in your Silver Dragons. The adapter cables that you made for my Fostex TH 900 are truly beautifully made and the sound is outstanding. From the extension on both ends, the detail and the instrument separation, the Fostex sounds outstanding now.

A big cheer for all of you at Moon Audio.

Koth (Posted on 10/23/2013)
Wonderful immersive soundstage Review by Theo
It's all here baby. You couldn't ask for more. These cans have the bass that's deep and controlled. The Mids are are smooth and the treble has a silky sound. When I put these cans on my head I'm good to go for a twelve hour stretch of listening to Jazz, Rock ,country, and female vocalist. I'm happy, very,very, happy. Money well spent. (Posted on 10/13/2013)
Wonderful headphone, cheaper then before. Review by Audio Otaku
I'm in love with these cans. They are a nice combo of accurate, but fun, and look drop dead sexy. I bought these before the price drop and still feel I would pay the price I did. (Posted on 9/26/2013)
PhenomenolReview by Alan
I've owned Em all, Grados, Senns, Audeze, Denon, etc. These are by far the best and most outstanding headphones I've ever heard. The absolute cream of the crop! (Posted on 1/22/2013)
The low frequency reproduction was amazing.Review by Wes
After listening to the TH900 I realized what my Sennheiser HD800 headphones missed on the low freq. end of music.
Wow what a sound. (Posted on 9/26/2012)
breath taking!!!!!Review by xenomorph
i dont own the words to convey how these cans sound. but i will say that i put my edition 9 and jh audio 16 pro away in the closet for good. th900 is a milestone in sound reproduction, and aesthetically look and feel them for yourself if you r privileged enough. nuff said (Posted on 5/23/2012)

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