HyFa Focal Bathys Review: Audiophile Wireless With Built-in DAC
Focal is a French speaker manufacturer whose headphones command attention in audiophile circles. The Bathys is their first wireless headphone with active noise cancellation, and at $699, it sits in a price bracket where expectations are extremely high. After six weeks of testing, here is the verdict.
Focal Bathys Review: Audiophile Wireless With Built-in DAC
Build and Design
The Bathys weighs 350 grams with a magnesium and aluminum construction that feels industrial and refined. The Focal logo on each ear cup illuminates with an LED that glows during Bluetooth use and can be toggled off. The headband is real leather with adequate padding, and the ear cushions are memory foam wrapped in microfiber.
The folding mechanism is sturdy and clicks into place firmly. A hard case is included that fits the folded headphones with a USB-C cable and 3.5mm audio cable. Build quality is a clear step above the $300-$400 wireless category.
Sound Quality
Focal uses 40mm full-range aluminum-magnesium M-shaped dome drivers, the same driver technology found in their open-back wired headphones. The result is a sound signature that immediately distinguishes itself from consumer wireless headphones.
Bass is fast, articulate, and punchy. It does not have the warm, pillowy bass of the Sony XM5 or AirPods Max. Instead, bass guitar notes are taut and defined. Kick drums have snap rather than boom. Sub-bass extension is adequate but not room-shaking.
Midrange is where the Bathys earns its audiophile credentials. The clarity is remarkable for wireless headphones. Vocals are present, textured, and revealing. Acoustic instruments sound lifelike. The M-shaped dome driver produces a midrange coherence that multi-driver or DSP-corrected competitors do not achieve.
Treble is extended and crisp. Hi-hats have metallic shimmer. String instruments have proper bite. The treble is brighter than the AirPods Max and Sony XM5, which may fatigue listeners who prefer a warm, dark signature.
| Specification | Focal Bathys |
|---|---|
| Driver Size | 40mm M-shaped dome |
| Driver Material | Aluminum-magnesium |
| Weight | 350g |
| Battery Life (ANC on) | 30 hours |
| Codec Support | SBC, AAC, aptX, aptX Adaptive |
| Bluetooth | 5.1 |
| USB DAC Mode | Yes (24-bit/192kHz) |
| Impedance | 35 ohms |
USB DAC Mode
The standout feature is the built-in DAC accessible via USB-C. Connect the Bathys to a computer or phone via USB, and the internal 24-bit/192kHz DAC bypasses Bluetooth entirely. The headphones function as a USB audio device with their own high-quality conversion. The difference between Bluetooth and USB DAC mode is audible: better dynamics, wider staging, and cleaner transients.
This makes the Bathys a two-in-one product. Wireless with ANC for commuting, wired USB DAC for critical listening at a desk. No other wireless headphone at any price offers this capability so seamlessly.
Noise Cancellation
ANC performance is competent but not class-leading. The Bathys uses a transparent mode and a Silent mode. Silent mode reduces low-frequency noise well but does not match the Sony XM5 or Bose QC Ultra for mid-frequency cancellation. For airplane travel, it is adequate. For open-office noise reduction, competitors perform better.
The Transparent mode sounds natural without the amplified hiss found in cheaper implementations.
Comfort
At 350 grams, the Bathys is heavy for extended sessions. The clamping force is firm, which helps with seal and bass response but adds to fatigue after 90 minutes. The ear cups are deep enough for most ears, and the microfiber cushions are comfortable against the skin without causing heat buildup.
App and EQ
The Focal app provides a graphic EQ with presets and custom adjustments. The interface is clean but less capable than the parametric EQ offered by Shure. Firmware updates are handled through the app.
Who Should Buy the Focal Bathys
The Bathys targets audiophiles who want a wireless headphone that does not compromise on sound quality. The built-in USB DAC mode is a genuine differentiator that solves the Bluetooth quality ceiling problem. At $699, you are paying for Focal’s driver technology and the dual-use capability.
Buy if: Sound quality is non-negotiable even in wireless headphones, you want USB DAC mode for desk listening, or you value Focal’s driver technology.
Skip if: ANC performance is your top priority, you want lightweight comfort for all-day wear, or $699 is significantly beyond your budget.
Key Takeaways
- 40mm aluminum-magnesium M-shaped dome drivers deliver audiophile-grade clarity in a wireless package
- USB DAC mode (24-bit/192kHz) via USB-C bypasses Bluetooth for high-resolution desk listening
- 30-hour battery life is competitive with the category
- ANC is functional but not class-leading
- 350-gram weight and firm clamp affect long-session comfort
Next Steps
For a comparison at a lower price point, read our [INTERNAL: sony-wh1000xm5-review]. To explore wired audiophile headphones at a similar budget, see our [INTERNAL: best-audiophile-headphones-500-1000] guide.