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gabe23111 4.2K Views
Mar 5, 2026 2:26 PM

Fosi Audio P3 Tube Headphone Preamp / Amplifier $61 + free s/h

$61

$218

72% off
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Deal Details
Fosi Audio via Aliexpress

Ships from a USA Warehouse.

Pre-coupon price as of this post is $67.88.
Apply coupon RDC7C to bring the price to $60.88.
  • True Tube Amplification: The preamp circuit elevates the voltage to 54V, ensuring the tubes work to their full potential, delivering a warm and rich experience. The unique preamplification technology delivers pure audio signals, faithfully reproducing crisp high tones, full midrange richness, and deep, rhythmic bass.
  • Bluetooth 5.1: Equipped with the Qualcomm QCC3031 chip, the P3 preamp guarantees impressive wireless sound quality and low latency, with compatibility for aptX HD and aptX LL codecs formats. Furthermore, the inclusion of a manual reset button prevents accidental connections by others, enhancing connection reliability.
  • Versatile Connectivities: The P3 provides Bluetooth/RCA inputs and RCA/AUX OUT/3.5mm headphone outputs. It can help create a 2.1-channel audio system by connecting active speakers/an amplifier and a subwoofer. As a headphone amplifier, it supports headphones with impedance ranging from 16Ω to 300Ω.
  • Premium Components: It utilizes ELNA audiophile-grade capacitors and taper A pot. The bass and treble controls boast central detents for tone-defeating. With an SNR of up to 103dB and a crosstalk of 95dB, it helps form a HiFi audio system when paired with the V3 amplifier of the same series.
Specs:
  • Model: P3
  • Power Adapter Output: 12V/1.5A
  • Product Adapter Input Voltage Range: AC 110V - 240V
  • SNR ≥ 103dB
  • THD ≤ 0.02%
  • Treble adjustment range: ±6dB
  • Bass adjustment range: ±12dB
  • Input Mode: RCA+ Bluetooth 5.1
  • Output: RCA/AUX/3.5mm headphone jack
  • Frequency Response: 20HZ -20KHZ((±1dB)
  • RMS Power: 250mw @16Ω; 150mw @32Ω; 32mw @250Ω; 20mW @300Ω
  • Headphone Impedance: 16-300Ω
  • Dynamic Range: 104dB
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Fosi Audio via Aliexpress

Ships from a USA Warehouse.

Pre-coupon price as of this post is $67.88.
Apply coupon RDC7C to bring the price to $60.88.
  • True Tube Amplification: The preamp circuit elevates the voltage to 54V, ensuring the tubes work to their full potential, delivering a warm and rich experience. The unique preamplification technology delivers pure audio signals, faithfully reproducing crisp high tones, full midrange richness, and deep, rhythmic bass.
  • Bluetooth 5.1: Equipped with the Qualcomm QCC3031 chip, the P3 preamp guarantees impressive wireless sound quality and low latency, with compatibility for aptX HD and aptX LL codecs formats. Furthermore, the inclusion of a manual reset button prevents accidental connections by others, enhancing connection reliability.
  • Versatile Connectivities: The P3 provides Bluetooth/RCA inputs and RCA/AUX OUT/3.5mm headphone outputs. It can help create a 2.1-channel audio system by connecting active speakers/an amplifier and a subwoofer. As a headphone amplifier, it supports headphones with impedance ranging from 16Ω to 300Ω.
  • Premium Components: It utilizes ELNA audiophile-grade capacitors and taper A pot. The bass and treble controls boast central detents for tone-defeating. With an SNR of up to 103dB and a crosstalk of 95dB, it helps form a HiFi audio system when paired with the V3 amplifier of the same series.
Specs:
  • Model: P3
  • Power Adapter Output: 12V/1.5A
  • Product Adapter Input Voltage Range: AC 110V - 240V
  • SNR ≥ 103dB
  • THD ≤ 0.02%
  • Treble adjustment range: ±6dB
  • Bass adjustment range: ±12dB
  • Input Mode: RCA+ Bluetooth 5.1
  • Output: RCA/AUX/3.5mm headphone jack
  • Frequency Response: 20HZ -20KHZ((±1dB)
  • RMS Power: 250mw @16Ω; 150mw @32Ω; 32mw @250Ω; 20mW @300Ω
  • Headphone Impedance: 16-300Ω
  • Dynamic Range: 104dB

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5 Comments

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Pro
Mar 6, 2026 7:59 PM
1.6K Comments
Joined Sep 2018
Zorba1446
Pro
Mar 6, 2026 7:59 PM
1.6K Comments
About $19 cheaper than Amazon, i.e. 20% savings, if you're ok with around 6 day shipping time. Fair trade, imo.
Mar 6, 2026 9:53 PM
140 Comments
Joined Aug 2014
DschmaleMar 6, 2026 9:53 PM
140 Comments
FYI, I own this and upgraded the tubes. Looks cool for sure but it isn't a tube preamp. It is a solid state preamp with tubes as filters.
Mar 6, 2026 10:25 PM
418 Comments
Joined Nov 2013
AlexW7764Mar 6, 2026 10:25 PM
418 Comments

Our community has rated this post as helpful. If you agree, why not thank

It is D Amp. the tubes are fake.
4
Pro
Mar 9, 2026 6:42 PM
1.6K Comments
Joined Sep 2018
Zorba1446
Pro
Mar 9, 2026 6:42 PM
1.6K Comments
Quote from AlexW7764 View quoted comment :
It is D Amp. the tubes are fake.
A "pre-amp" does NOT have an "amp" --- that's what makes it a PRE-amp. (facepalm)
Mar 16, 2026 6:19 PM
815 Comments
Joined Dec 2004
gridStormMar 16, 2026 6:19 PM
815 Comments
Quote from Zorba1446 View quoted comment :
A "pre-amp" does NOT have an "amp" --- that's what makes it a PRE-amp. (facepalm)
It DOES have an amp though? For headphones? (facepalm)

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