--- product_id: 576801869 title: "P3 Tube Preamp Headphone Amplifier Home Audio Preamplifier Mini Vacuum Pre Amp Receiver with Bluetooth aptX LL HD Bass Treble Tone Controls for HiFi Stereo Active Speakers with RCA AUX Jack" brand: "fosi audio" price: "VT34848" currency: VUV in_stock: true reviews_count: 13 category: "Fosi Audio" url: https://www.desertcart.vu/products/576801869-p3-tube-preamp-headphone-amplifier-home-audio-preamplifier-mini-vacuum store_origin: VU region: Vanuatu --- # Bluetooth 5.1 aptX HD/LL low latency 54V tube voltage for rich sound Bass & treble tone controls with detents P3 Tube Preamp Headphone Amplifier Home Audio Preamplifier Mini Vacuum Pre Amp Receiver with Bluetooth aptX LL HD Bass Treble Tone Controls for HiFi Stereo Active Speakers with RCA AUX Jack **Brand:** fosi audio **Price:** VT34848 **Availability:** ✅ In Stock ## Summary > 🎧 Elevate your audio game with vintage tube warmth and modern wireless freedom! ## Quick Answers - **What is this?** P3 Tube Preamp Headphone Amplifier Home Audio Preamplifier Mini Vacuum Pre Amp Receiver with Bluetooth aptX LL HD Bass Treble Tone Controls for HiFi Stereo Active Speakers with RCA AUX Jack by fosi audio - **How much does it cost?** VT34848 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/576801869-p3-tube-preamp-headphone-amplifier-home-audio-preamplifier-mini-vacuum) ## Best For - fosi audio enthusiasts ## Why This Product - Trusted fosi audio brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Precision Tone Control:** Fine-tune your sound with premium ELNA capacitors and tactile bass & treble controls featuring central detents for perfect EQ. - • **Versatile Connectivity:** Easily switch between RCA, AUX, and headphone outputs supporting 16Ω–300Ω headphones and 2.1-channel setups. - • **Warm Tube Amplification:** Experience authentic, rich analog warmth with a powerful 54V tube preamp circuit that elevates every note. - • **Audiophile-Grade Clarity:** High SNR (103dB) and low crosstalk (95dB) deliver pristine stereo separation and immersive soundstage for true HiFi lovers. - • **Seamless Wireless Streaming:** Bluetooth 5.1 with Qualcomm QCC3031 chip ensures crystal-clear, low-latency audio with aptX HD and aptX LL codecs. ## Overview The Fosi Audio P3 is a compact tube preamplifier and headphone amplifier combining classic vacuum tube warmth with modern Bluetooth 5.1 aptX HD/LL wireless streaming. It delivers rich, detailed sound with 54V tube voltage, versatile RCA/AUX connectivity, and precise bass/treble tone controls. Designed for audiophiles and music lovers, it supports headphones from 16Ω to 300Ω and offers high signal-to-noise ratio and low crosstalk for a premium HiFi experience. ## Description Product description Fosi Audio P3 Tube Preamplifier/Headphone Amp Experience the unique charm from vacuum tubes. Embark on a Warm & Rich Musical Journey RMS Power: 250mw @16Ω; 150mw @32Ω; 32mw @250Ω; 20mW @300Ω Headphone Impedance: 16-300Ω; SNR: ≥103dB; THD: ≤ 0.02% Input: Bluetooth 5.1/RCA; Output: RCA/AUX/3.5mm headphone jack Dynamic Range: 104dB; Frequency Response: 20Hz-20kHz(±1dB) Compatible with DC 12V/1.5A~3A power supply Please ensure that your turntable has a built-in preamp to ensure compatibility with the P3 preamp. Audiophile-Grade Capacitors Built-in quality Japanese ELNA caps for outstanding performance. Qualcomm aptX Bluetooth QCC3031 Chip Supports multiple codecs formats: SBC/AAC/aptX/aptX HD/aptX LL. Logarithmic Potentiometer Helps to achieve a fine volume tuning to match human ear's auditory characteristics. Effortless Insertion & Removal Suitable for 7-pin vacuum tubes. Please align each pinhole before installation. DIY Your Stereo System Applicable Vacuum Tube Model: 6K4/6J1/6J4/GE5654/6AK5, etc. vacuum tubes. Vacuum Tubes The Synthesis of Tech and Nature Embracing technology, staying close to nature, and maintaining global climate awareness. 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. Friendly Solutions Guide I. Compatibility Limitations 1. Connections: To connect passive speakers/subwoofers, first connect to a power amplifier via the RCA output; To connect active speakers/subwoofers, via the AUX output; To connect headphones, via the 3.5mm headphone jack output. 2. Bluetooth Support: SBC/AAC/aptX/aptX HD/aptX LL; Does not support LDAC or Dolby Atmos. P3 can only receive Bluetooth signals and does not transmit them. Therefore, it cannot connect to Bluetooth headphones/TV wirelessly. Instead, need to plug headphones into the headphone out port/RCA port. II. Function - Related Solutions 1. Cable Issues: Ensure all plugs (e.g., RCA input, RCA output, AUX output) are fully inserted and match the device specifications. Reseat any loose connections. Ensure all cables are correctly connected, secure, and in good condition. 2. Tube Installation: Make sure the tube pins are properly lined up with the tube socket; Please manually straighten the pins if the pin is deformed. ## Features - 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 You'll Get: Fosi Audio P3 Tube Preamplifier x1, User Manual x1, 5654W Vacuum Tube x2, 12V/1.5A Power Supply x1 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CJBKWF43 | | Best Sellers Rank | #36,678 in Electronics ( See Top 100 in Electronics ) #22 in Audio Component Preamplifiers | | Brand | Fosi Audio | | Color | Black | | Customer Reviews | 4.3 out of 5 stars 493 Reviews | | Item Weight | 500 Grams | | Manufacturer | Fosi Audio | | Mfr Part Number | P3 | | Model Number | P3 | | Output Channel Quantity | 2 | | Power Source | AC | | Unit Count | 1.0 Count | | Warranty Description | 24 Month Manufacturer | ## Product Details - **Brand:** Fosi Audio - **Color:** Black - **Item Weight:** 500 Grams - **Output Channel Quantity:** 2 - **Power Source:** AC ## Images ![P3 Tube Preamp Headphone Amplifier Home Audio Preamplifier Mini Vacuum Pre Amp Receiver with Bluetooth aptX LL HD Bass Treble Tone Controls for HiFi Stereo Active Speakers with RCA AUX Jack - Image 1](https://m.media-amazon.com/images/I/61XYoUopdEL.jpg) ![P3 Tube Preamp Headphone Amplifier Home Audio Preamplifier Mini Vacuum Pre Amp Receiver with Bluetooth aptX LL HD Bass Treble Tone Controls for HiFi Stereo Active Speakers with RCA AUX Jack - Image 2](https://m.media-amazon.com/images/I/71rQq13qnJL.jpg) ![P3 Tube Preamp Headphone Amplifier Home Audio Preamplifier Mini Vacuum Pre Amp Receiver with Bluetooth aptX LL HD Bass Treble Tone Controls for HiFi Stereo Active Speakers with RCA AUX Jack - Image 3](https://m.media-amazon.com/images/I/81Scfqn3kiL.jpg) ![P3 Tube Preamp Headphone Amplifier Home Audio Preamplifier Mini Vacuum Pre Amp Receiver with Bluetooth aptX LL HD Bass Treble Tone Controls for HiFi Stereo Active Speakers with RCA AUX Jack - Image 4](https://m.media-amazon.com/images/I/71oJe1MX4RL.jpg) ![P3 Tube Preamp Headphone Amplifier Home Audio Preamplifier Mini Vacuum Pre Amp Receiver with Bluetooth aptX LL HD Bass Treble Tone Controls for HiFi Stereo Active Speakers with RCA AUX Jack - Image 5](https://m.media-amazon.com/images/I/71IvWQUQRLL.jpg) ## Questions & Answers **Q: I am unable to connect/align the vacuum tubes in the socket of the P3.** A: Remove the copper rings for easier tube installation. **Q: How to reset P3 Bluetooth？** A: Resetting the P3's Bluetooth with the RST hole in the back. **Q: Can the op-amps in P3 be replaced?** A: No, they cannot be replaced. **Q: P3 power supply compatibility** A: P3 is compatible with DC 12V/1.5A~3A power supply. **Q: Does P3 support LDAC?** A: No, it does not support LDAC. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by J***J on February 26, 2026* ### ⭐⭐⭐⭐⭐ Review *by D***O on December 5, 2023* ### ⭐⭐⭐⭐ Review *by A***R on December 21, 2024* ## Frequently Bought Together - Fosi Audio P3 Tube Preamp Headphone Amplifier Home Audio Preamplifier Mini Vacuum Pre Amp Receiver with Bluetooth aptX LL HD Bass Treble Tone Controls for HiFi Stereo Active Speakers with RCA AUX Jack - Fosi Audio V3 Stereo Amplifier Home Audio 300 Watts x2 Power TPA3255 Class D Mini Amp 2 Channel Audio Component for Passive Bookshelf Tower Speakers Desktop Home Theater with 32V Power Supply - Monoprice 1.5ft Premium 2 RCA Plug/2 RCA Plug M/M 22AWG Cable - Black --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vu/products/576801869-p3-tube-preamp-headphone-amplifier-home-audio-preamplifier-mini-vacuum](https://www.desertcart.vu/products/576801869-p3-tube-preamp-headphone-amplifier-home-audio-preamplifier-mini-vacuum) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-08*