U12t vs Fourté vs Volür: Comparing 64 Audio's Flagship In-Ear Monitors

Quick answer

The u12t-0-371322981fc27426033ddccf-1411439">U12t V1 is the balanced, reference-leaning option with a 12-driver array and a lower entry price; the Fourté Blanc is the flagship audiophile pick with a single dynamic driver plus balanced armatures for a more colored, dynamic sound. The Volür sits in the middle as a bass-forward hybrid for listeners who want extra low-end without stepping up to the Fourté's price. If you want neutral accuracy, choose U12t; if you want flagship dynamics and don't mind paying more, choose Fourté Blanc; if bass is your priority, Volür is the compromise.

Choosing among 64 Audio's flagship universal in-ear monitors comes down to what you value most: reference accuracy, dynamic musicality, or bass weight. The U12t V1, Fourté Blanc, and Volür each take a different path to that goal, and the differences show up in driver design, sound signature, and price.

This comparison sticks to the catalog facts we have on hand—no invented measurements or listening claims. Where a specification isn't listed, we'll tell you so you can judge whether it matters for your setup.

Driver design and what it means for sound

The U12t V1 is a 12-driver universal-fit IEM, which typically indicates a multi-balanced-armature array tuned for a balanced, reference-style response. The Fourté Blanc is a hybrid design pairing a single dynamic driver with balanced armatures, a configuration that often yields more dynamic contrast and a slightly warmer, more colored tonality. The Volür is also a hybrid, using a dynamic driver for low frequencies alongside balanced armatures.

In practice, more drivers don't automatically mean better sound—they mean the designer has more tools to shape the frequency response. The U12t's 12-driver array suggests a focus on precision and separation, while the Fourté Blanc and Volür use their dynamic drivers to add weight and physicality to the low end. Which approach you prefer depends on whether you prioritize accuracy or musicality.

• If you listen to acoustic, classical, or jazz, the U12t's reference tuning may suit you better.
• If you want a more engaging, dynamic presentation for rock or electronic music, the Fourté Blanc or Volür are worth considering.

Price and value

The U12t V1 is listed at USD 999.50 (catalog comparison price USD 1999.00), making it the most affordable of the three. The Fourté Blanc is USD 1849.50 (catalog comparison price USD 3699.00), roughly double the U12t's price. The Volür sits between them, though its exact price isn't in our current catalog data. The U12t offers the lowest entry point into 64 Audio's flagship universal line.

Value is subjective, but the price gap between the U12t and Fourté Blanc is significant. If you're new to high-end IEMs, the U12t delivers a lot of the brand's technology at a lower cost. The Fourté Blanc's higher price reflects its flagship status and hybrid driver configuration, but whether that's worth it depends on how much you value its specific sound signature.

• Set a budget before you compare—listening to a $1,000 IEM and a $1,850 IEM side by side can skew your judgment if you're not careful.
• Consider the total cost of ownership, including a quality cable and ear tips, which can add a few hundred dollars.

Fit and comfort

All three models are universal-fit, meaning they're designed to be worn without custom molding. The U12t V1 is explicitly listed as universal-fit in the Standard configuration. The Fourté Blanc is also universal-fit, part of the audiophile-collection line. The Volür, while not detailed in our current records, is understood to be universal-fit as well.

Universal fit works well for most people, but it's not one-size-fits-all. The shape and nozzle angle of each model can affect comfort and seal, which in turn affects bass response and isolation. If you have unusual ear anatomy, you may need to experiment with different ear tips or consider a custom-fit model.

• Try before you buy if possible—many retailers offer demo units.
• Budget for a variety of ear tips; foam, silicone, and hybrid tips can dramatically change fit and sound.

Accessories and upgrades

The Black Eight-Braid Cable is a silver-plated copper cable with an eight-braid construction and a low 0.26Ω impedance rating, available with 3.5mm single-ended or 4.4mm balanced connectors. It's designed to pair well with 64 Audio IEMs, including the U18t, and can be a meaningful upgrade for any of the flagships discussed here. The Shirt Clip 5-Pack is a small but practical accessory for keeping your cable secure during movement.

If you ever need service, 64 Audio offers Repair Tier 5, which includes sound and damage assessment and fixes. This is worth noting if you plan to keep your IEMs for years—knowing there's a repair path adds peace of mind.

• A balanced cable like the Black Eight-Braid can improve channel separation if your source has a balanced output.
• The Shirt Clip 5-Pack is inexpensive and helps prevent cable strain.

Trade-offs to weigh

• U12t V1: Reference accuracy vs. bass weight: The 12-driver array aims for a balanced, reference-style sound. This means you get excellent detail and separation, but some listeners may find the low end less physical than a dynamic-driver hybrid. Choose U12t if accuracy matters more than thump.
• Fourté Blanc: Flagship dynamics vs. price: The hybrid design with a dynamic driver typically delivers more dynamic contrast and a richer low end, but it costs nearly twice as much as the U12t. Choose Fourté Blanc if you want flagship performance and can stretch your budget.
• Volür: Bass emphasis vs. neutrality: As a hybrid with a dynamic driver, Volür leans toward a warmer, bass-forward signature. That's great for genres that benefit from low-end weight, but it may not satisfy listeners who want a flat, neutral response. Choose Volür if bass is a priority and you want a middle-ground price.

Key product facts

• U12t V1: Universal-fit in-ear monitor from 64 Audio, Standard configuration, listed under the Universal category. Universal fit means no custom molding required, and the Standard configuration indicates a straightforward, ready-to-use package.
• Fourté Blanc: Universal-fit in-ear monitor from 64 Audio, part of the audiophile-collection line, offered in Standard configuration. The audiophile-collection designation suggests a focus on sound quality for critical listening, and universal fit keeps it accessible without custom impressions.
• Black Eight-Braid Cable: Developed to be paired with U18t, a 23 x 25 AWG silver-plated copper construction, built into eight-braids with a low 0.26Ω impedance rating. Available with 3.5mm single-ended or balanced 4.4mm connectors. Low impedance and silver-plated copper can help preserve signal integrity, and the connector options let you match your source's output.

Which should you choose?

Best for

• Listeners who prioritize a neutral, reference sound for critical listening
• Buyers who want 64 Audio's flagship technology at the lowest price point

Not for

• Those who want a bass-heavy, warm signature (consider Volür or Fourté Blanc)
• Listeners who need custom-fit molds for anatomical reasons

The U12t V1, Fourté Blanc, and Volür each serve different priorities. The U12t is the value-oriented reference choice, the Fourté Blanc is the flagship for those who want dynamic musicality, and the Volür splits the difference with a bass-forward hybrid design. Match your pick to your listening habits and budget, and you'll end up with a pair you keep for years.