Fostex TH808
About This Headphones
Fostex TH808 — form factor over-ear, driver type dynamic, driver size 50 mm, impedance ohms 25, open closed back open.
- Form factor over-ear
- Driver type dynamic
- Driver size 50 mm
- Impedance ohms 25
- Open closed back open
The 30-Second Version
The Fostex TH808 delivers stellar, top-tier sound that rivals the best open-backs out there, but it's painfully uncomfortable and lacks any modern features. If pristine audio is your sole obsession and you don't mind the fit, it's a niche gem. For everyone else, the comfort issue alone is a dealbreaker.
Overview
The Fostex TH808 is a wired, open-back dynamic headphone aimed at studio rats and critical listeners who don't mind trading every modern convenience for best-in-class sound. It borrows heavily from the flagship TH909, with a solid black walnut housing, etched aluminum accents, and Fostex's proprietary 50mm BIODYNA driver that pumps out a claimed 5Hz to 45kHz frequency response.
But here's the kicker: the sound is glorious, top-tier stuff, yet the comfort is among the worst we've ever measured. At 370 grams with a clamp that feels personal, these cans can turn a long listening session into a literal headache. So you're essentially paying for audio excellence and learning to suffer for it.
Performance
Sound is the TH808's entire personality. We're talking an 89th percentile score in our database, right up there with headphones that cost as much as a used car. The sub-bass digs absurdly deep, mids are lush without getting muddy, and highs have a crisp, airy resolution that makes well-mastered tracks feel like they're being performed inside your skull. Build quality is solid at the 77th percentile, with that walnut and aluminum combo feeling premium if a bit heavy. The bad news? The mic is basically an afterthought (16th percentile) and there's no ANC, which isn't shocking for an open-back design, but just know you'll hear every single thing happening around you. The wired-only connection and middling battery life percentile (44) are a reminder this headphone doesn't even try to be your daily driver for commute or calls.
Pros & Cons
Pros
- Absolutely stunning, reference-grade sound that outclasses most competitors. 89th
- Spacious, open-back soundstage ideal for critical listening and studio work. 77th
- Premium build with solid walnut and aluminum that feels built to last.
- Easy to drive 25Ω impedance, works fine without a dedicated amp.
Cons
- Comfort is a genuine problem, our data puts it near the bottom of the pack. 8th
- No effective built-in mic, don't even think about taking a call on these. 10th
- Zero noise isolation, so ambient noise will bleed right in. 16th
- Wired only with a 6.35mm jack, no Bluetooth or USB-C. 31th
Specifications
Full Specifications
Design
| Form Factor | over-ear |
| Open/Closed | open |
| Weight | 0.4 kg / 0.8 lbs |
| Ear Cushion | low-resilience cushions |
Audio
| Driver Type | dynamic |
| Driver Size | 50 |
| Freq Min | 5 |
| Freq Max | 45000 |
| Impedance | 25 |
| Sensitivity | 96 |
Connectivity
| Wireless | No |
| Wired Connector | 6.35mm |
| Detachable Cable | Yes |
| Cable Length | 3 |
Value & Pricing
Pricing for the TH808 is a head-scratcher. Across vendors we've seen it listed anywhere from $900 to an insane $188,454, which makes us wonder if someone accidentally added a few zeros. The realistic price seems to hover around that lower end, and at that level you're paying purely for the sensational audio performance. Just know that comfort is a massive trade-off, and even at $900 you're getting a one-trick pony. Shop around aggressively; there's no way you should pay over a grand for these.
vs Competition
Stack it against the usual suspects like the Sony WH-1000XM6 or Bose QuietComfort Ultra, and the TH808 looks like a time capsule from 1998. Those wireless champs give you ANC, multipoint Bluetooth, and cloud-like comfort, but their sound signature is more mass-market than audiophile. The Sennheiser MOMENTUM 4 and Bowers & Wilkins Px8 S2 split the difference a bit more with richer tuning, yet none of them can touch the raw detail and soundstage depth you get here. If music is your only priority and you don't move around much, the TH808 outclasses them all for pure fidelity, but if you need any sort of versatility, those other cans run circles around it.
| Spec | Fostex TH808 | Sony WH-1000XM6 WH-1000XM6 | Sennheiser MOMENTUM 4 M4AEBT | Bowers & Wilkins Px8 S2 Px8 S2 | Bose QuietComfort Ultra 2nd Gen | Technics EAH-A800 EAH-A800 |
|---|---|---|---|---|---|---|
| Form Factor | over-ear | over-ear | over-ear | over-ear | over-ear | over-ear |
| Driver Type | dynamic | dynamic | Dynamic | dynamic | Dynamic | PEEK/Polyurethane 3-Layer Diaphragm |
| Driver Size (mm) | 50 | 30 | 42 | 40 | - | 40 |
| Impedance Ohms | 25 | 48 | 470 | - | 32 | 34 |
| Wireless | false | true | true | true | true | true |
| Active Noise Cancellation | - | true | true | true | true | true |
| Open Closed Back | open | closed | closed | closed | closed | closed |
| Bluetooth Version | - | 5.3 | 5.2 | 5.3 | 5.4 | 5.2 |
| Battery Life Hours | - | 30 | 60 | 30 | 30 | 50 |
| Compare | Compare | Compare | Compare | Compare |
| Product | Anc | Mic | Build | Sound | Battery | Comfort | Connectivity | Social Proof |
|---|---|---|---|---|---|---|---|---|
| Fostex TH808 | 30.8 | 15.9 | 77.1 | 88.9 | 44.4 | 10.3 | 37.1 | 8 |
| Sony WH-1000XM6 WH-1000XM6 Compare | 97.6 | 91.4 | 92.1 | 95.2 | 72.6 | 79.7 | 99.7 | 93.6 |
| Sennheiser MOMENTUM 4 M4AEBT Compare | 97.6 | 85.3 | 77.1 | 97.6 | 89.3 | 79.7 | 98.9 | 79.4 |
| Bowers & Wilkins Px8 S2 Px8 S2 Compare | 97.6 | 99.4 | 95.8 | 99.3 | 72.6 | 51 | 97.5 | 98.8 |
| Bose QuietComfort Ultra 2nd Gen Compare | 92.4 | 78.8 | 97.2 | 48.2 | 72.6 | 86.8 | 99.7 | 98.8 |
| Technics EAH-A800 EAH-A800 Compare | 92.4 | 98.4 | 77.1 | 96.9 | 83.9 | 51 | 93.1 | 98.8 |
Common Questions
Q: Does the Fostex TH808 come with a microphone for calls or gaming?
Technically there is a mic, but it's so poor that it's only useful for basic voice prompts. You'll absolutely want a separate desk mic or headset if you plan on any kind of voice chat.
Q: How comfortable are these for long listening sessions?
Most people find the clamp force and weight fatigueing after an hour or two. If you wear glasses or have a sensitive crown, these could literally hurt.
Q: Can I use these with my phone or do I need a dedicated amplifier?
At 25Ω and 96dB sensitivity, they'll run fine from a phone or laptop headphone jack, though you might need a 6.35mm adapter for modern devices. A dedicated amp can open up some extra headroom, but it's not required.
Who Should Skip This
If comfort ranks anywhere near sound quality on your priority list, look elsewhere immediately. The TH808's 10th percentile comfort score isn't just a number, it's a genuine warning. Also skip if you need any sort of noise cancelling, wireless freedom, or even a passable microphone. Commuters, office workers, and gamers on voice chat should go for something like the Sony XM6 or Bose QC Ultra instead.
Verdict
Buy the Fostex TH808 only if you're a seated, stationary listener who judges headphones by sound quality above everything else and has a high tolerance for physical discomfort. It's a studio monitor in headphone form, not a lifestyle product. For mixing, mastering, or immersive hi-fi listening at a desk, it's absolutely brilliant. Anyone else should keep scrolling.