Fosi Audio GR40-12V Tube DAC Headphone Amplifier
Key Features
Product Description
Multifunctional DAC Preamplifier: The GR40 is a versatile tube DAC preamplifier and headphone amplifier in one, it supports Bluetooth/USB/Optical/Coaxial inputs and active speakers/3.5mm headphone output, with a priority mode for headphones.
High-Resolution Decoding: With the ESS9028Q2M DAC chip, the preamplifier offers superior audio quality and flexibility. The USB sampling rate supports 32Bit/384kHz and DSD256, making an effective noise reduction to ensure lossless audio every time.
Advanced Bluetooth with Low Latency: Featuring the QCC3031 Bluetooth module, it supports aptX, aptX-HD, and aptX-LL codecs to provide detailed and clean audio sound. Also, you can get a relaxed experience with low latency when watching movies.
Compact yet Creativity: With its compact form and a combination of preamp volume, bass, and treble controls, the stereo preamplifier produces a sweeter, more organic sound while preserving the midrange and treble frequencies that make music.
User-Friendly Design: The digital-to-analog audio converter GR40 is designed with user convenience at its core, allowing you to toggle between different audio inputs and restore Bluetooth—a real Plug-and-plug DAC preamplifier without any driver.
Vacuum Tube Notice
The vacuum tube included with the GR40 is shipped randomly from compatible models. The specific tube model cannot be selected.
Specifications
|
Brand |
Fosi Audio |
|
Model |
GR40-12V |
|
Product Type |
Tube DAC, Preamplifier & Headphone Amplifier |
|
Channels |
2.0 Stereo |
|
DAC Chip |
ESS ES9028Q2M |
|
Tube Type |
JAN 5654W |
|
Number of Tubes |
2 |
|
Audio Inputs |
USB-C, Optical, Coaxial, Bluetooth |
|
Audio Outputs |
Stereo RCA, 3.5 mm Headphone Output |
|
USB Audio Resolution |
Up to 32-bit / 384 kHz |
|
DSD Support |
Up to DSD256 |
|
Optical / Coaxial Support |
PCM up to 24-bit / 192 kHz |
|
Frequency Response |
20 Hz–20 kHz (±1 dB) |
|
Signal-to-Noise Ratio (SNR) |
≥103 dB |
|
Dynamic Range |
104 dB |
|
Total Harmonic Distortion (THD) |
≤0.03% |
|
Headphone Impedance |
32–300 Ω |
|
Headphone Output Power |
300 mW @ 16 Ω; 250 mW @ 32 Ω; 50 mW @ 250 Ω; 40 mW @ 300 Ω |
|
Bluetooth Version |
5.1 |
|
Bluetooth Chipset |
Qualcomm QCC3031 |
|
Bluetooth Codecs |
SBC, AAC, aptX, aptX HD, aptX LL |
|
Bluetooth Range |
≥10 m (unobstructed) |
|
Tone Controls |
Bass and Treble Adjustment |
|
Power Supply |
DC 12 V / 1.5 A |
|
Dimensions |
Approx. 200 × 180 × 60 mm |
|
Weight |
Approx. 800 g |
|
Colour |
Black |