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Massdrop x Fostex TH-X00 Audiophile Headphones
Massdrop x Fostex TH-X00 Audiophile Headphones


Fostex x Massdrop TH-X00 Headphones

Available exclusively on Massdrop, the Fostex x Massdrop TH-X00 Headphones were born of a collaboration with a brand that’s brought us innovative products since 1949, in response to our Audiophile Community’s call for a price-to-performance redefining closed-back headphone. Featuring mahogany ear cups, a magnesium alloy frame, Fostex’s signature biodynamic drivers, and a highly reviewed sound signature, the TH-X00 fills that mandate.

Note: Each pair of headphones is one of a kind, and due to the nature of wood, slight variations in wood grain may occur. If you're an international customer looking to partner with a shipping forwarder, please read this FAQ.

Massdrop x Fostex TH-X00 Audiophile Headphones

jude's Review on Head-Fi TV

Improved Technology, Intimate Sound

Equipped with the biodynamic cone Fostex first developed in the late ‘80s, which delivers a sound unique to any other driver structure, the TH-X00 benefits from years of iterating on that original design. The higher magnetic flux density in these headphones (more than 1 tesla) creates instant attack and decay for a crisper, more detailed sound signature.

With the emphasis on the low end toned down slightly from the TH600, the rich bass meets the Fostex standard without becoming bloated. The top end’s been taken down several decibels, too, neutralizing any sharp, sibilant highs and putting the emphasis on the mids. The result is an incredibly intimate sound, like being front row at a small venue, and performs exceptionally well with the nuanced harmonies of Imogen Heap’s “Hide and Seek” and the haunting vocals in Bright Eyes’ “Lua.”

Massdrop x Fostex TH-X00 Audiophile Headphones
Massdrop x Fostex TH-X00 Audiophile Headphones

Mahogany Cups, Comfort-First Design

The TH-X00’s mahogany earcups are a nod to the Denon D series (though somewhat lighter in color and more luminescent) and complemented by Fostex’s proprietary magnesium alloy body, built to be lightweight, strong, and durable. Made of eggshell protein, the earpads’ soft leatherette is designed to form a super tight seal, while still being breathable (real leather does not breathe) for hours of comfortable listening. And because the curve of the headband has been optimized to fit the human head, minimal padding is needed for you to forget you’re wearing headphones at all.

A thick, braided cable rounds out the presentation, with a conveniently long distance between the headphones and Y split. The Massdrop logo is silk-screened on the inside of the headband, just above the left cup, with a serial number located just above the right cup. 

Massdrop x Fostex TH-X00 Audiophile Headphones
Massdrop x Fostex TH-X00 Audiophile Headphones
Massdrop x Fostex TH-X00 Audiophile Headphones

Reviews From The Audiophile Community


  • Fostex x Massdrop
  • Closed-back design
  • 50 mm dynamic transducer
  • Magnesium alloy construction
  • Mahogany earcups, brilliant gloss finish
  • Leatherette earpads, matte black
  • Magnetic flux density: >1 tesla
  • Impedance: 25 ohms
  • Sensitivity: 94 dB/mW
  • Maximum input: 1,800 mW
  • Frequency response: 5–45,000 Hz
  • 10 ft (3 m) thick, braided Y cable
  • 1/4 in (6.3 mm) gold-coated stereo phone plug
  • Weight, without cable: 12.3 oz (350 g)
  • Weight, with cable: 17 oz (482 g)


  • Carrying pouch
  • 2-year warranty
  • 1/4" to 1/8" adapter (for use with portable devices)


Because of strict distribution agreements, Massdrop cannot sell-or-ship this product outside the United States. Understanding that there is demand for this product outside of the US, we have negotiated exclusive pricing with a freight forwarding service to help certain individuals join this drop. If you join, please understand that you are purchasing this product and it will be delivered to a US address. It will then be processed for international shipping by a third-party forwarding company. Tracking will be provided.

At checkout, international orders will be charged $15 for the third party freight forwarding service. You will need to input your shipping address as per a normal drop.


All orders will be shipped by Massdrop. Drops will be ending each day and purchases will ship out within two business days.

Estimated ship date is Nov 28, 2017 PT.

Your payment method will be charged 2 hours after purchase. Cancellations are accepted until that time, after which the request will be submitted to vendors to deliver the best delivery time to members, making all sales final. Be sure to check the discussion page for updates.