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The Fosi Audio GR40 is a compact tube preamplifier and headphone amp with a built-in DAC. It takes Bluetooth, USB, optical and coaxial inputs and feeds active speakers over RCA or headphones over 3.5mm. The ES9028Q2M DAC handles USB audio up to 32-bit/384kHz and DSD256, and the QCC3031 Bluetooth module supports aptX, aptX HD and aptX LL for low-latency movie watching. Bass and treble knobs plus a headphone priority mode make it a flexible desktop hub for a small speaker or headphone setup.
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Lowest price we've seen: $85.49 on Nov 13 at Amazon. Tracked across 1 store since Nov 13.
The Fosi Audio GR40 is a tube preamplifier, DAC and headphone amplifier in one. It takes Bluetooth, USB, optical and coaxial inputs. It outputs to active speakers through RCA and to headphones through a 3.5mm jack.
It uses an ES9028Q2M DAC chip. USB input supports 32Bit/384kHz and DSD256. The Bluetooth 5.1 module is a QCC3031 that supports SBC, AAC, aptX, aptX HD and aptX LL, and aptX LL gives low latency for watching movies.
The compact body is an all-aluminum alloy CNC integrated design. It has volume, bass and treble controls with central detents, and it comes with 5725W tubes. The input switches among 4 digital input modes. It is plug-and-play and needs no driver. It is in the same series and form as the V3.
