Fosi Audio P3 front view shows compact design for desktop listening
Close-up of P3 vacuum tubes glowing for warm, musical tones
P3 tone controls with bass and treble for precise sound shaping
Bluetooth 5.1 connection enables wireless streaming with low latency
P3 input and output panel includes Bluetooth, RCA, and 3.5 mm options
Headphone output supports 16 to 300 ohm headphones for versatile listening
Included 12V power supply ensures stable operation
5654W vacuum tubes on P3 highlight premium components
Compact home hi-fi setup ready to upgrade listening

Fosi Audio

Fosi Audio P3 Tube Preamp Headphone Amplifier – Warm Tone, Bluetooth 5.1 aptX LL

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$111.21

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Return eligible items within 30 days of delivery for a full refund. We email you a prepaid return label.

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During high demand, deliveries may experience short carrier delays. Tracking updates remain active for every order.

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Questions about fit or an order? Email nexoltic@gmail.com. We reply on business days (Mon–Fri).

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Product details

Warm, musical tone with true tube amplification

The Fosi Audio P3 preamplifier elevates the signal through a dedicated tube stage, delivering a warm, rich character that highlights crisp highs, full midrange, and a deep, rhythmic bass. Built to preserve the integrity of your recordings, this unit emphasizes pure signal paths and careful component choices for engaging detail across the spectrum.

Key benefits at a glance

  • True Tube Amplification: A 54V stage drives the tubes to their full potential, fostering a lush midrange and refined treble.
  • Bluetooth 5.1 with aptX codecs: Qualcomm QCC3031 enables wireless sound with low latency; supports aptX HD and aptX LL for compatible devices.
  • Versatile connectivity: Bluetooth input, RCA input, and RCA/auxiliary outputs provide flexible setup options; headphone output supports 16–300 Ω.
  • Premium components: ELNA audiophile capacitors and a taper A potentiometer; tone controls with central detents for precise adjustments.
  • Clean audio specs: SNR up to 103 dB and crosstalk of 95 dB help preserve detail when paired with suitable gear.

Real-world usage ideas

  • Pair with active speakers or an existing amplifier to form a capable 2.1-style setup with a subwoofer.
  • Use as a dedicated headphone amplifier for a wide range of headphones from 16 Ω to 300 Ω.

What’s included and setup tips

  • Fosi Audio P3 Tube Preamplifier
  • 5654W Vacuum Tube x2
  • 12V/1.5A Power Supply
  • User Manual

Tip: Remove the copper rings to enable effortless tube installation on the P3 for a clean, stable setup.

FAQ

Q: What connections does the P3 provide?

A: Bluetooth input, RCA input, and RCA/3.5 mm outputs; headphone jack supports 16–300 Ω.

Q: Can the P3 drive a subwoofer or active speakers for a 2.1 setup?

A: Yes, you can form a 2.1 system by connecting active speakers and a subwoofer.

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