USB-HEAR

USB High-end Audio Receiver

USB Audio

DAC Output

SPDIF Output

Digital Input

Control Interface

USB HID Consumer Control

Simplified System Integration
Microcontroller-based USB audio receiver solution for simplified integration in professional high-end HiFi applications.

USB-HEAR Module

The FC301 USB-HEAR Module is a microcontroller-based USB audio receiver solution for HiFi DAC and amplifier applications. It is implemented as a system on module (SoM) which enables easy and rapid integration.

The FC301 USB-HEAR Module implements a USB audio class 2.0 compliant PCM and DSD playback interface compatible with Windows 11/10, macOS and Linux hosts. For Windows, a bit-perfect, high-res audio driver is available.

For proper integration with a DAC, the module supports an external master clock input. The receiver can be controlled and monitored through an I2C register interface and a set of control and status lines.

Typical Application

Scenario in a DAC or amplifier product

Feature Overview

Main Features

USB Audio

  • USB audio class 2.0 compliant isochronous streaming, two audio channels (stereo)
  • Asynchronous clocking model, USB playback stream is synchronized to master oscillator
  • 32-bit PCM sample format up to 768 kHz sampling rate
  • Native DSD up to DSD1024, compatible with Windows driver and Linux
  • DSD over PCM (DoP) up to DSD256
  • ASIO compatible (DSD and DSD over PCM)
Print

DAC Output

  • I2S compliant digital interface for connecting a digital-to-analog converter
  • 32-bit PCM format up to 768 kHz sampling rate
  • DSD format up to DSD1024

Control Interface

  • Control and status register set accessible via I2C
  • Interrupt status line for notifications on status register changes
  • Status lines for master clock selection, PCM/DSD format selection and DAC mute
Additional Features

Digital Input

  • I2S compliant digital interface for connecting external digital sources such as a streaming client or tuner
  • 32-bit PCM format up to 192 kHz sampling rate

SPDIF Output

  • 24-bit PCM format up to 192 kHz sampling rate

USB HID Consumer Control

  • Multimedia key events can be sent to the host to control a player application
  • For example: Volume Up, Volume Down, Play, Pause, Fast Forward, Fast Backward etc.
made in Germany
Our hardware and software is purely designed and implemented by our teams in Germany.

Technical support is provided directly by the developers.

USB-HEAR DevKit

The FC920 USB-HEAR DevKit comes as a Raspberry Pi format compatible Kit for direct usage of FC301 USB-HEAR Module. Mounting holes and pin-connector are identical to Raspberry Pi 3A+ Format to use existing Audio extensions as easy as possible.

The DevKit includes pre-soldered FC301 USB-HEAR Module and all needed cables for power-up and SPDIF extension.

To start using the FC301 USB-HEAR Module, the FC920 USB-HEAR DevKit can be used as reference, evaluation and validation environment.

Typical Application

Scenario with a DAC or amplifier product

Feature Overview

Main Features

USB Audio

  • USB audio class 2.0 compliant isochronous streaming, two audio channels (stereo)
  • Asynchronous clocking model, USB playback stream is synchronized to master oscillator
  • 32-bit PCM sample format up to 768 kHz sampling rate
  • Native DSD up to DSD1024, compatible with Windows driver and Linux
  • DSD over PCM (DoP) up to DSD256
  • ASIO compatible (DSD and DSD over PCM)
Print

DAC Output

  • DAC output directly on Raspberry Pi Connector
  • I2S compliant digital interface for connecting a digital-to-analog converter
  • 32-bit PCM format up to 768 kHz sampling rate
  • DSD format up to DSD1024

SPDIF Output

  • Optical SPDIF output connector
  • 24-bit PCM format up to 192 kHz sampling rate
Additional Features

Raspberry Pi Add-ons

  • Raspberry Pi compatible connector
  • Direct usage of standard Raspberry Pi Add-on
    boards (Audio Hats)
Supported Operating Systems
USB-HEAR works with built-in drivers on following Systems

Windows 11/10

Linux

macOS

Android

FibreCode GmbH
Marie-Curie-Straße 9 | 76275 Ettlingen | Germany
+49 (0)151 2716 1688 | info@fibrecode.com

FibreCode provides USB High-End Audio Receiver Module and Development Kit.

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