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Free US domestic shipping when you spend $150+
Free US domestic shipping when you spend $150+

Nostalgia Audio TESSERACT

Tesseract boasts 10 Balanced Armature drivers and 6 of Sonion's latest Electrostatic drivers. Not only is the shell designed with care, but the internal modular structure of Tesseract is also fully built using 3D Printing. This ensures consistent sound quality across all Tesseract units, meeting the demands of high-end audiophiles. With a 5-way crossover design, Tesseract allocates 2 BA drivers for low frequencies, 2 for low-mid, 4 for mid, 2 for high, and 6 Electrostatic drivers for ultra-high frequencies. To further enhance low-frequency performance, we have integrated Low-Pass Labyrinth technology into Tesseract. The result is an expansive soundstage and an airy sound that audiophiles who pursue perfection will truly appreciate.

Limited to 150 units worldwide!

Technical Specifications

  • 16 Drivers, Hybrid Design
  • 10 Balanced Armature Drivers - 2 Low, 2 Low-Mid , 4-Mid,  2 High
  • 6 Electrostatic Drivers - 6 Ultra-High
  • 5-Way Crossover Design
  • Low-Pass Labyrinth Technology
  • Spiral Flow Device
  • E.S.C. Technology
  • Impedance: 18 Ohms @ 1kHz
  • Frequency Response: 10 Hz - 45kHz
  • Sensitivity: 118dB @ 1kHz, 1mW
  • High Purity Silver Cable
Nostalgia Audio TESSERACT - MusicTeck


  • 4 Strands 22 AWG High Purity Silver
  • Multiple strand design
  • SoftFlex PVC Insulation
  • Rhodium Plated High Quality 4.4mm Balanced Termination


Nostalgia Audio TESSERACT - MusicTeck

Balanced Armature drivers

Tesseract uses ten Balanced Armature Drivers on low, low-mid, mid and high frequencies. Our SFD system is implemented to reduce losses from the tube curvature, presenting a smooth, sweet vocal also detailed highs and extensions.

Nostalgia Audio TESSERACT - MusicTeck

Electrostatic drivers

 We used Six Electrostatic Drivers in Tesseract. Voltage transformer has been installed into the IEM so the EST driver doesn’t need to have an external power unit to drive the units. 6 EST Drivers give the most accurate transient response, and also provide unlimited details



LPL - Low Pass Labyrinth

Consisting of Large Composite BA Drivers and a Built-in Labyrinth. By using high-precision 3D printing technology, a 72 mm ultra long bass duct structure is built for a powerful, slamming bass response.

Nostalgia Audio TESSERACT - MusicTeck
Nostalgia Audio TESSERACT - MusicTeck

SFD - Spiral Flow Device

The SFD is specially designed for enhancing the Mid performance in Tesseract . A helical formation incorporated as a ridge serves to induce a spiral pattern of flow, reducing loss caused by the curvature of the nozzle, and polishing up the vocal performance. 

Fully 3D Print Design

 Tesseract inherited our featured fully 3D print design. Not only the shell, we have designed a precise 3D printed acoustic tube structure for all those drivers to minimize the size and provide more solid and precise sound. Furthermore,  Medical-Grade 3D Printed Materials is used to maximize wearing comfort, tear resistant, skin-friendly and biocompatible.

Nostalgia Audio TESSERACT - MusicTeck


E.S.C. Technology

Tesseract boasts cutting-edge technology with the inclusion of ESC (Electromagnetic Shielding Coating) technology, sprayed on all the drivers. This advanced coating is designed to provide protection against electromagnetic interference, ensuring an uninterrupted audio experience with pure sound quality. The coating is expertly crafted from a unique blend of metal oxides and conductive polymers, creating a highly effective barrier against electromagnetic waves. With this innovative technology, users can enjoy crystal-clear audio without any distortion or interference caused by external electromagnetic radiation. This makes our IEM the perfect choice for audiophiles, music professionals, and anyone seeking the highest quality audio experience.

Design Concept of Tesseract

We hope that users, amidst the hustle and bustle of the city, can unwind on their way home after dealing with their daily tasks, by wearing headphones and embarking on a journey through Tesseract that transcends dimensions. Tesseract takes you on a four-dimensional journey, immersing you in a space we have carefully designed and allowing you to experience time and space travel. Playing different tracks is akin to setting reference points on a timeline, enabling music to transport you back in time or help you explore the future. Our aim is for users to fully immerse themselves in the unique time and space of music after donning Tesseract, and enjoy the pleasure that music can bring. At this moment, users can also begin to explore and develop a love for different types of music, gaining diverse experiences along the way.


  • Tesseract In-Ear Monitors
  • Tesseract High Purity Silver Cable
  • Anodized Aluminum Case
  • Metallic Warranty Card
  • Nylon Mesh Cloth Protective Bag
  • Dekoni Washable Memory Foam
  • Symbio W Memory Foam & Silicone Hybrid Ear Tips - S, M, L

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