Infuse your desktop audio setup with analog tube warmth using the Fosi Audio P3. Featuring dual 5654W vacuum tubes operating at a high 54V plate voltage, Qualcomm QCC3031 Bluetooth 5.1 with aptX HD, hardware tone controls, and dedicated headphone and subwoofer outputs, the P3 bridges classic tube character with modern wireless connectivity.

Key Features

* True High-Voltage Vacuum Tube Amplification
The internal power circuit boosts operating voltage to 54V, ensuring the 5654W vacuum tubes operate in their optimal linear range to deliver rich midrange harmonic warmth, smooth treble extension, and organic acoustic texture.

* Qualcomm QCC3031 Bluetooth 5.1 Wireless Connection
Stream high-resolution wireless audio with low latency support for aptX, aptX HD, and aptX LL codecs. Includes a dedicated manual Bluetooth reset button to prevent unwanted paired device takeovers.

* Precision Treble and Bass Tone Controls
Features physical treble and bass adjustment knobs with center-detent positions for quick tone defeat, utilizing ELNA audiophile-grade capacitors and a logarithmic taper A potentiometer for smooth volume control.

* Versatile System Output Options
Equipped with RCA line outputs for power amplifiers or active speakers, an auxiliary 3.5mm line output for powered subwoofers, and a front-panel 3.5mm headphone jack that drives headphones from 16 Ohms to 300 Ohms.

* Matching Visual and Sonic Aesthetic
Designed to pair seamlessly with Fosi Audio V3 series power amplifiers, featuring an aluminum alloy chassis that provides passive heat dissipation and shielding against external electrical noise.

What is in the Box

* 1 x Fosi Audio P3 Tube Preamplifier
* 2 x 5654W Vacuum Tubes
* 1 x Bluetooth Antenna
* 1 x 12V Power Adapter
* 1 x User Manual

Technical Specifications

* Vacuum Tube Model: 5654W (Compatible with 6K4, 6J1, 6J4, EF95, 6AK5)
* Tube Circuit Operating Voltage: 54V
* Bluetooth Chipset: Qualcomm QCC3031 (Bluetooth 5.1)
* Supported Bluetooth Codecs: SBC, AAC, aptX, aptX HD, aptX LL
* Inputs: RCA Line In, Bluetooth 5.1
* Outputs: RCA Pre-Out, 3.5mm AUX Line Out (Subwoofer), 3.5mm Headphone Jack
* Headphone Impedance Matching: 16 Ohms to 300 Ohms
* Signal-to-Noise Ratio: Greater than or equal to 103 dB
* Crosstalk: 95 dB
* Frequency Response: 20Hz - 20kHz (±0.5 dB)
* Power Supply: DC 12V