Feature
●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. (Important Tips: Remove the copper rings for effortless installation of the tubes on the P3.)
●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.
●What Youll Get: Fosi Audio P3 Tube Preamplifier x1, User Manual x1, 5654W Vacuum Tube x2, 12V/1.5A Power Supply x1, a 24-month worry-free warranty and responsive customer service.
Description
Authentic Tube Amplification
Fosi Audio P3 Tube Preamplifier/Headphone Amp
Experience the unique charm from vacuum tubes.
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Audiophile-Grade Capacitors
Built-in quality Japanese ELNA caps for outstanding performance.
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Qualcomm aptX Bluetooth QCC3031 Chip
Supports multiple codecs formats: SBC/AAC/aptX/aptX HD/aptX LL.
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Logarithmic Potentiometer
Helps to achieve a fine volume tuning to match human ears auditory characteristics.
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Effortless Insertion & Removal
Suitable for 7-pin vacuum tubes. Please align each pinhole before installation.
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DIY Your Stereo System
Applicable Vacuum Tube Model: 6K4/6J1/6J4/GE5654/6AK5, etc. vacuum tubes.
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5654W Vacuum Tubes
Experience the unique charm from vacuum tubes.
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The Synthesis of Tech and Nature
Embracing technology, staying close to nature, and maintaining global climate awareness.
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Exquisite Craftsmanship
Utilizing CNC integrated molding, precise sandblasting, and meticulous detailing.
Key Parameters
- Signal-to-Noise Ratio≥103dB
- Noise Floor: 64uV
- Crosstalk: 95dB
Mode Indicator
- RCA mode: steady red light
- Bluetooth pairing mode: blue light flashing
- Bluetooth connection built: steady blue light
Bluetooth Connectivity
- Bluetooth Range: ≥10m
- Bluetooth Version: 5.1
- Bluetooth Name: Fosi Audio P3
Bluetooth Reset
Press and hold for 3 seconds to clear Bluetooth pairing to solve the problem of Bluetooth being mistakenly connected by others.
Comparison Chart
Headphone Amp+Preamp | Type | Headphone Amp+Preamp |
- | MAX Power Output | - |
Bluetooth + RCA | Input | AUX + RCA |
RCA+Headphone+AUX | Output | 3.5 mm + 6.35 mm |
| | Treble& Bass Control | |
≤ 0.02% | THD | ≤0.03% |
≥103dB | SNR | ≥ 95dB |
Headphone Amp+Preamp | Type | Phono Preamp |
- | MAX Power Output | - |
Bluetooth + RCA | Input | RCA |
RCA+Headphone+AUX | Output | Speakers+Headset |
| | Treble& Bass Control | |
≤ 0.02% | THD | ≤ 0.08% |
≥103dB | SNR | ≥ 70dB |
Headphone Amp+Preamp | Type | Phono Preamp |
- | MAX Power Output | - |
Bluetooth + RCA | Input | Bluetooth+ AUX+ RCA |
RCA+Headphone+AUX | Output | Active speakers |
| | Treble& Bass Control | |
≤ 0.02% | THD | ≤ 0.1% |
≥103dB | SNR | ≥ 70dB |
Headphone Amp+Preamp | Type | Phono Preamp |
- | MAX Power Output | - |
Bluetooth + RCA | Input | RCA+3.5mm AUX |
RCA+Headphone+AUX | Output | RCA+3.5mm AUX |
| | Treble& Bass Control | |
≤ 0.02% | THD | ≤0.1% |
≥103dB | SNR | ≥70dB |
