Reference USB-C Interface Adaptation | Available at Trimira Audio
The Nordost Frey 2 USB-C Adapter is a compact USB-C-to-USB-A adapter within Nordost's Norse 2 Series, designed to connect modern USB-C source devices to established USB Type-A cables and compatible digital-audio equipment.
Rather than functioning as a simple passive plug, the adapter uses a short mechanically controlled cable section incorporating Nordost's Dual Mono-Filament technology, silver-plated solid-core OFC conductors, controlled USB geometry, comprehensive shielding, and gold-plated connectors.
At Trimira Audio, we recommend the Frey 2 USB-C Adapter for systems where a USB-C source needs to connect to an existing high-performance USB-A cable or USB-A interface.
Key Features & Technological Innovations
Patented Dual Mono-Filament Technology
The conductors are wrapped with two helical FEP strands before being enclosed in an extruded FEP outer jacket.
This creates a low-contact dielectric environment designed to minimize dielectric interaction and energy storage while supporting rapid signal propagation.
Silver-Plated Solid-Core OFC Conductors
The adapter employs silver-plated solid-core 99.99999% high-purity OFC copper conductors.
The solid-core architecture provides consistent conductor geometry within the short adapter cable section.
Controlled USB Impedance Architecture
The short cable section is mechanically controlled to maintain the electrical characteristics required for USB data transmission across the USB-C-to-USB-A connection.
100% Dual-Layer Shielding
A combined foil-and-braid shielding structure provides 100% total coverage, helping protect the USB connection from:
- RF interference
- Electromagnetic interference
- External electrical noise
- USB power-line noise
- High-frequency crosstalk
Gold-Plated USB Terminations
The adapter uses:
-
USB Type-C male connector
-
USB Type-A female connector
This allows a USB-C source to connect to an existing USB Type-A cable without replacing the entire cable assembly.
Technical Specifications
| Specification |
Frey 2 USB-C Adapter |
| Series |
Norse 2 Series |
| Insulation |
High-Grade Extruded Fluorinated Ethylene Propylene (FEP) |
| Construction |
Mechanically Tuned Length, Spacing & Dual Mono-Filament Design |
| Conductor Material |
Silver-Plated 99.99999% Solid-Core Oxygen-Free Copper (OFC) |
| Impedance |
USB Characteristic Impedance Standard |
| Shielding |
100% Total Coverage Dual-Layer Shielding (Foil & Braid) |
| Velocity of Propagation |
85% Speed of Light |
| Termination |
Gold-Plated USB Type-C Male → USB Type-A Female |
| Total Length |
17 cm (6.7 inches) |
Ideal Applications
The Frey 2 USB-C Adapter is particularly useful when connecting:
- USB-C laptops → existing USB-A audio cables
- USB-C computers → USB-A DAC cables
- USB-C music servers → established USB-A digital chains
- USB-C source devices → USB-A interfaces
It is important to confirm that the USB-C source and connected USB-A equipment support the required USB data and audio mode, as connector compatibility alone does not guarantee functional compatibility.
Consult with the Digital Audio Specialists at Trimira Audio
The Nordost Frey 2 USB-C Adapter provides a compact way to integrate modern USB-C source hardware into an existing high-performance USB-A digital-audio system.
Trimira Audio can assist with:
- USB-C device compatibility
- USB-A cable integration
- DAC connectivity
- Computer-to-DAC configuration
- Digital-front-end planning
- Complete Nordost USB system matching
- Private system auditions
At just 17 cm, Frey 2 provides a compact Norse 2 Series interface combining Dual Mono-Filament construction, silver-plated solid-core OFC, controlled USB geometry, 100% shielding, and gold-plated USB-C/USB-A termination.
