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  • Carbon V3
  • Carbon V3
  • Carbon V3
  • Carbon V3
  • Carbon V3
  • Carbon V3
  • Carbon V3
  • Carbon V3

Periodic Audio

Carbon V3

Regular price $299.00 USD
Regular price Sale price $299.00 USD
Sale Sold out


Oh Say Can You C

The C (Carbon) IEM is unique. Lab grown diamond meets Neil Diamond. The ultimate statement in resolution, with distortion below any other IEM we know of. Transparency starts and stops with C. Enough fun built in to make listening to any style a joy but revealing enough to hear any detail buried in the mix.

C utilizes a lab-grown diamond layer (8 microns) on our own proprietary high-temperature polymer substrate. All components inside our IEMs were 100% designed and tooled in-house, resulting in a totally unique product.

The sonic signature of C is an interesting mix of Ti and Be, with the enhanced bass response of Ti but the high-end extension of Be. Due to the very high Young’s modulus (a measure of stiffness) and internal speed of sound, C’s diaphragm moves homogenously with no lag across the surface.  It resists bending and distortion better than any metal, but is lighter than most metals.

Still not sure that this IEM is for you?  Then use our amazing Select-A-Tron to guide your IEM choice!

Nerd Layer

What’s New With the C?

We’ve done a few great changes to C – and the whole line – to improve performance and user experience.  This starts with a new material for the entire enclosure.  We worked for 3 years with Eastman Chemicals, one of the largest plastics companies in the world, to research, develop, and quantify new polymers for acoustic applications.  

Our research led us to a specific blend of their Tritan™ copolyester.  This material proved to be not just rigid, but acoustically dead with lower energy storage and transmission than the polycarbonate we were using.  Stray resonance and noise is lowered even more.

We also refined the external and internal geometry to make it more anti-resonant, so clarity is increased alongside the improvements of the materials used.  The result is the most stable, lowest resonant IEM enclosure ever made.  All with the lowest weight enclosure possible.

I See a Detachable Cable?  What’s That About?

We have also developed our own 2.5mm jack: the IDEEL connector.  This connector is the world’s smallest 2.5mm jack, measuring just 3.6mm across, and a tiny 9.5mm mounting depth. This jack allows us to use the very robust 2.5mm TS plug in our tiny IEMs.  No more delicate MMCX or difficult 2 pin plastic connectors needed.

Mechanical Elements

Transducer Diaphragm: Carbon in diamond lattice

Transducer Surround: Proprietary polymer

Transducer Frame: 316 Stainless Steel

Transducer Magnet: N48H Grade Neodymium

Enclosure Body: Tritan™ copolyester

Protective Grille: 316 Stainless Steel

Bonding Compound: Cyanoacrylate Adhesive

Sealant Compound: Polyvinyl Acetate

Mounting Tips: Medical Grade Silicone and Urethanes

Connector: IDEEL 2.5mm TS compatible connector (tip hot, sleeve ground)

All components are Finite Element Analyzed for stress, strain, and durability.




Frequency Response

12 Hz to 38 kHz


32 Ohms nominal


98 dB SPL at 1mW in ear

Power Handling

200 mW continuous

Peak SPL

121 dB


Less than 0.2% THD at 1mW

Physical Properties

Cable Length

1.2 m


2.8 / 16.7 g (IEM/Set)

Operational Temperature

-20 to +50° C

Operational Humidity

0-95% Relative Humidity


31.3 dB (foam eartrip)

Overall Length

21 mm

Body Diameter

12 mm

Nozzle Diameter

6 mm

C Material Properties

Melting Point

3925 Kelvin

Speed of Sound

12190 meters per second

Young's Modulus

1050 Gigapascals

Brinell Hardness

∞ Megapascals

Whats in the box

Included Accessories

1.2 meter long cable single 3.5mm TRS to dual 2.5mm TS jack and metal shells

Single Flange Tips – Small, Medium, Large

Dual Flange Tips – Small, Medium, Large

Memory Foam Tips – Small, Medium, Large

Protective Travel Case

Gold Plated ¼” TRS Adapter Jack

Gold Plated Dual Mono Airplane Adapter


Warranty lasts for five (5) years in the United States.

Warranty lasts for two (2) years in all other Countries.

Please see the Warranty page for full details.