Fostex TH-900 Datasheet

Fostex
Brand
Fostex
Model
TH-900
Category
Headphones
Type
Datasheet

Fostex TH-900 is a high-end headphone featuring a newly designed driver unit with 1.5 tesla (15,000 gauss) magnetic circuit and bio-dynamic 50mm diaphragm, plus traditional Japanese lacquered “Urushi” finished ear housings and 7N OFC cables. A combination which achieves the sonic nirvana of a wide stereo field coupled with crystal clear, un-coloured audio reproduction.

Fostex TH-900 is a high-end headphone featuring a newly designed driver unit with 1.5 tesla (15,000 gauss) magnetic circuit and bio-dynamic 50mm diaphragm, plus traditional Japanese lacquered “Urushi” finished ear housings and 7N OFC cables. A combination which achieves the sonic nirvana of a wide stereo field coupled with crystal clear, un-coloured audio reproduction.

HP-A8C
HP-A8C
32bit DAC HEADPHONE AMP
HP-A3
HP-A3
32bit DAC
TH900
TH900
PREMIUM REFERENCE HEADPHONES
www.fostex.com
32b i t DAC
32b i t DAC
The 32bit HP-A8C sets a new high watermark for DAC / Headphone Amplifiers. Looking gorgeous with a luxury
glass front panel, the HP-A8C features precision designed analog and digital circuitries for exceptional audio
reproduction, a wide selection of inputs and outputs and an SDHC card slot for DSD audio playback. This is the unit
audiophiles, music creators and mastering engineers have been waiting for.
The HP-A8C joins the HP-A3, a compact DAC which has carved itself quite a reputation since its launch in 2011.
Compatible with audio sources up to 24bit/96kHz, the HP-A3 features an integrated headphone amplifier
exclusively designed to get the most from a mobile PC audio set-up.
Finally, there’s the stunning new TH900 headphones - the first high-end headphones from Fostex featuring a newly
designed driver unit with 1.5 tesla (15,000 gauss) magnetic circuit and bio-dynamic
50mm diaphragm, plus traditional Japanese lacquered “Urushi” finished ear
housings and 7N OFC cables. A combination which achieves the sonic
nirvana of a wide stereo field coupled with crystal clear, un-coloured
audio reproduction.
Supreme quality converters from Fostex
HP-A8C Remote
The HP-A8C comes
complete with a full-
function infra-red remote
control.
HP-A8C SDHC Slot
The HP-A8C features an
SDHC card slot for playback
of DSF format audio files
direct from an SD card
HP-A8C 32bit DAC Headphone Amp
HP-A8C Main Features
• Precision32bitD/Aconverter(AsahiKasei’s
AK4399)with‘all-discrete’analogcircuitry
• ComplieswithUSBAudioClass2.0upto32bit/
192kHz (24bit on Windows)
• AsynchronousmodeviapreciseTCXOclock*
• Highlyprecise‘electronicvolume’level
adjustment
• Largecapacitytoroidalpowertransformer
• DSDfilereproductionviabuilt-inSD(SDHC)card
driveorviaUSB**
• Selectablebetweentheinternalclockandthe
externalclock(exceptforUSBandSDcard)
• Built-inx2andx4up-samplingfunctions
• DigitalFilteroptions:conventional“sharproll-
off” or “minimum delay” - developed by Asahi
Kaseitoeliminatepre-echo
• DirectOutmodebypassingthevolumecontrol
• Variableheadphoneamplifier’sgainfrom0dBto
-12dBin0.5dBstepsforperfectmatchingwith
almost any type (& brand) of headphones
• Twofrontmountedheadphoneoutputs
• Comprehensiveinputoptionsincluding:USB,
AES/EBU,Coaxial,Optical(x2)andanalogRCA
• Choiceofdigital(Coaxial,Optical)andanalog
(RCA) outputs
• DedicatedRemoteController
• Stunningenclosurewithglassfrontand
sculptured side panels
• Beautifulwhite‘high-viz’organicLEDdisplay
*(TemperatureCompensatedCrystalOscillator)
**byfuturefirmwareupdate
HP-A3 Main Features
• BuspoweredviaUSB(noneedforexternalAC
power unit)
• Compatiblewithaudiosourcesupto
24bit/96kHz
• Highqualityanalogheadphoneamp-canbe
used with any type (or brand) of headphones
• Equippedwithhigh-gradeAKM32bit(*)
DAC(AsahiKasei’sAK4390)
• CondensersandOPampdesignedexclusively
for audio products
• USB/Digital(Optical)inputselector
• Headphones/RCA(Analog)outputselector
• DoublesasD/DconverterfromUSBdigitalaudio
to Optical
• AnUSB/ACadapterfromtheshelfcanbeused
for use as an Optical / Analog converter
Note:WhenusingtheUSBinput,thesamplingfrequencyisfixedat96kHz.
Audio file with Fs 32k/44.1k/48kHz will be reproduced by upsampling to
96kHz and the S/PDIF Out is also fixed at 96kHz.
HP-A8C 32bit DAC Headphone Amp
HP-A3 32bit DAC TH900 Reference Headphones
TH900 Main Features
• Neodymiummagneticcircuitutilisingthe
magnetic repulsion system with the 1.5 tesla
(15,000 gauss) magnetic flux density results in
an ultra-wide dynamic range
• Unique“Biodyna”diaphragm*forsupremehigh
resolution sound reproduction
• EarhousingsmadeusingJapaneseCherryBirch
(BetulaGrossa)-therigidanddensetexture
means maximum acoustic performance.
• Earhousingsfinishedwithtraditional“Urushi”
lacquer and simply look gorgeous
• PlatinumfoiledFostexlogos
• Earpadscomposedofproteinleathermade
from eggshell membrane for maximum comfort
• 7Ngrade(99.99999%)OFC(OxygenFree
Copper) cords with duralumin plug
TH900 Specications
General
Type: Dynamic
Driver: 50mmdiaNdmagnet
Impedance: 25ohm
Sensitivity: 100dB/mW
MaximumInput: 1,800mW
ReproductionFrequency: 5–45kHz
General
Weight: 400g(excludingthecord)
Cord: 3mYtype7N-OFC
Plug: 6.3mmdiagoldcoatingstereo
phone plug
Accessory: Headphonestand
HP-A8C Specications
Inputs & Outputs
Input
USBport
Connector: Btype(Standard)
Quantization,Fs: 16/24/32bit(16/24bitonWindows),
44.1/48/88.2/96/176.4/192kHz
Interface: USBhighspeed
Digital (Optical)
Connectorx2: Optical,square
Format: S/PDIF
Quantization,Fs: 16/24bit,
44.1/48/88.2/96/176.4/192kHz
Digital (Coaxial)
Connector: RCAPin
Format: S/PDIF
Quantization,Fs: 16/24bit,
44.1/48/88.2/96/176.4/192kHz
Digital(AEX/EBU)
Connector: XLR-3-31type(Pin2hot)
Format: AES/EBU
Quantization,Fs: 16/24bit,
44.1/48/88.2/96/176.4/192kHz
Analog
Connector: RCAPin(L,R)
Output
Phones 1,2
Connector: Stereophone
MaxOutput: 700mW(32-ohmloaded)
OptloadImpedance: 16ohm–600ohm
THD: Lessthan0.002%at1kHz,32-ohm
loaded, 100mW
Frequencyresponse: 10Hz–80kHz+/-3dB
Analog
Connector: RCAPin(L,R)
Optloadimpedance: Morethan10kohm
THD: Lessthan0.002%at1kHz
Frequencyresponse: 10Hz–80kHz+/-3dB
Digital (Optical)
Connector: Optical,square
Format S/PDIF
Quantization, Fs 16/24bit,
44.1/48/88.2/96/176.4/192kHz
Digital (Coaxial)
Connector: RCAPin
Format: S/PDIF
Quantization, Fs 16/24bit,
44.1/48/88.2/96/176.4/192kHz
General
Dimensions: 213mm(W)x78mm(H)x314mm(D)
Weight: approx.3.8kgs
PowerConsumption: 24W
Accessories: 1xremotecontroller
Windows Driver Software for HP-A8
HP-A8CcomplieswithUSBAudioClass2.0.IncaseofusewithWindows
thathasnotcompliedwithUSBAudioClass2.0sofar,thedriversoftware
forHP-A8C(forWindowsXPorlater)isnecessary,whichcanbedown-
loaded from the Fostex website. The driver must be installed before the
HP-A8isconnectedtoPC.MacOS(10.6orlater)complyingwithUSBAudio
Class 2.0 does not require the driver software.
HP-A3 Specications
Inputs & Outputs
Input
USBport
Connector: Btype(Standard)
Quantization, Fs 16/24bit, 96kHz
Interface: USBfullspeed
Digital
Connector: Optical,square
Format: S/PDIF
Quantization, Fs 16/24bit, 32/44.1/48/88.1/96kHz
Output
Phones
Connector: Stereophone
MaxOutput: 100mW(32-ohmloaded)
THD: Lessthan0.01%at1kHz,
32-ohm loaded, 100mW
Frequencyresponse: 20Hz/20kHz+-0.3dB
(32ohm loaded, 100mW)
Analog
Connector: RCAPin
Referenceoutputlevel: -10dBV
THD: Lessthan0.01%at1kHz
Frequencyresponse: 20Hz/20kHz+-0.3dB
Digital
Connector: Optical,square
Format: S/PDIF
Quantization, Fs 16/24bit, 96kHz
General
Dimensions: 108mm(W)x36mm(H)x140mm(D)
Weight:approx. 450g
Power: DC5V(viaUSBport)
PowerConsumption: 2.5W
Accessories: 1xUSBcable(1.0m)
In accordance with our policy of continuous
development, we reserve the right to change
specifications without notice. E&OE.
Fostex Company
3-2-35Musashino,Akishima,Tokyo,Japan196-0021
Tel:+81(0)42-546-4974Fax:+81(0)42-546-9222
www.fostex.com
HP-A3 Interfacing
TheHP-A3featuresUSBinputandpower(noneedforanexternalpower
supply), optical digital I/O and an analog out on RCA connectors. A single
headphone 6mm jack is present on the front panel.
HP-A8C Interfacing & Remote
When it comes to I/O, the HP-A8C is particularly well
equipped with 2x optical and coaxial digital in, optical and
coaxialdigitalout,analoginandoutonRCA,USB,AES/
EBUandanSDHCcardslotforplaybackofDSFformat
audio direct from the card. (SD card also used for firmware updates). Twin
headphone jacks are present on the front panel.
The compact full function remote control gives remote access to all major
HP-A8C functions.
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Fostex TH-900 Datasheet

Fostex
Brand
Fostex
Model
TH-900
Category
Headphones
Type
Datasheet

Fostex TH-900 is a high-end headphone featuring a newly designed driver unit with 1.5 tesla (15,000 gauss) magnetic circuit and bio-dynamic 50mm diaphragm, plus traditional Japanese lacquered “Urushi” finished ear housings and 7N OFC cables. A combination which achieves the sonic nirvana of a wide stereo field coupled with crystal clear, un-coloured audio reproduction.

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