Fosi Audio GR40 Headphone DAC Preamplifier

The Fosi Audio GR40 is a multifunctional tube DAC preamplifier with an integrated headphone amplifier, designed to deliver warm, detailed sound with modern connectivity. Combining analog tube character with digital precision, it serves as a flexible centerpiece for desktop and HiFi systems.

Equipped with a high-performance ESS DAC chip, the GR40 supports high-resolution audio playback up to 32bit/384kHz and DSD256 via USB. This ensures accurate signal conversion with low noise and high clarity across a wide range of audio formats.

With Bluetooth, USB, optical, and coaxial inputs, the GR40 easily integrates with various audio sources. The advanced Bluetooth module supports aptX, aptX-HD, and aptX-LL codecs, offering stable wireless streaming with low latency.

The unit features RCA outputs for active speakers and a 3.5mm headphone output with priority mode. Built-in bass, treble, and volume controls allow fine-tuning of the sound, while the compact design ensures easy placement in any setup.

Features
Tube DAC Preamplifier With Headphone Amplifier
ESS DAC Chip For High Resolution Audio
Supports PCM 32bit 384kHz And DSD256
Bluetooth With aptX aptX HD And aptX LL
USB Optical And Coaxial Inputs
RCA Output And 3.5mm Headphone Output
Headphone Priority Mode
Bass Treble And Volume Controls
Plug And Play Operation

Compatibility
Active Speakers
Headphones With 3.5mm Jack
Bluetooth Audio Devices
USB Optical And Coaxial Sources

Specifications
DAC Chipset: ESS 9039Q2M
Inputs: Bluetooth USB Optical Coaxial
Outputs: RCA 3.5mm Headphone
THD(+N): ≤0.03%