--- product_id: 576801869 title: "P3 Bluetooth Tube Preamp, Headphone Amplifier for Home Audio" brand: "fosi audio" price: "$196.61" currency: USD in_stock: true url: https://www.desertcart.us/products/576801869-p3-bluetooth-tube-preamp-headphone-amplifier-for-home-audio store_origin: US region: United States of America --- # Bluetooth 5.1 aptX LL/HD 54V True Tube Amplification Bass & Treble Tone Controls P3 Bluetooth Tube Preamp, Headphone Amplifier for Home Audio **Brand:** fosi audio **Price:** $196.61 **Availability:** ✅ In Stock ## Summary > 🎧 Elevate Your Audio Game with Vintage Warmth & Modern Wireless Freedom ## Quick Answers - **What is this?** P3 Bluetooth Tube Preamp, Headphone Amplifier for Home Audio by fosi audio - **How much does it cost?** $196.61 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/576801869-p3-bluetooth-tube-preamp-headphone-amplifier-for-home-audio) ## 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 - • **Versatile Audio Hub:** Connect RCA, AUX, and 3.5mm outputs to build your perfect 2.1 HiFi stereo or headphone setup. - • **Precision Tone Shaping:** Fine-tune your sound with premium ELNA capacitors and tactile bass & treble controls featuring central detents. - • **Warm Analog Tube Sound:** Experience rich, full-bodied audio with 54V tube preamp power that elevates every note. - • **Audiophile-Grade Clarity:** High SNR (103dB) and low crosstalk (95dB) deliver pristine sound fidelity for discerning listeners. - • **Seamless Wireless Streaming:** Bluetooth 5.1 with Qualcomm QCC3031 chip ensures crystal-clear, low-latency aptX HD & LL connectivity. ## Overview The Fosi Audio P3 is a compact tube preamplifier and headphone amplifier combining classic vacuum tube warmth with cutting-edge Bluetooth 5.1 aptX HD/LL wireless technology. It delivers 54V true tube amplification for rich, detailed sound, supports versatile inputs/outputs including RCA and AUX, and features premium audiophile components for precise bass and treble control. Ideal for HiFi stereo setups and headphones from 16Ω to 300Ω, it offers a seamless blend of vintage analog charm and modern connectivity in a sleek, freestanding design. ## Description Experience the unique charm from vacuum tubes. 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. Built-in quality Japanese ELNA caps for outstanding performance. Supports multiple codecs formats: SBC/AAC/aptX/aptX HD/aptX LL. Helps to achieve a fine volume tuning to match human ear's auditory characteristics. Suitable for 7-pin vacuum tubes. Please align each pinhole before installation. Applicable Vacuum Tube Model: 6K4/6J1/6J4/GE5654/6AK5, etc. vacuum tubes. Experience the unique charm from vacuum tubes. Embracing technology, staying close to nature, and maintaining global climate awareness. Utilizing CNC integrated molding, precise sandblasting, and meticulous detailing. Signal-to-Noise Ratio≥103dB Noise Floor: 64uV Crosstalk: 95dB RCA mode: steady red light Bluetooth pairing mode: blue light flashing Bluetooth connection built: steady blue light Bluetooth Range: ≥10m Bluetooth Version: 5.1 Bluetooth Name: Fosi Audio P3 Press and hold for 3 seconds to clear Bluetooth pairing to solve the problem of Bluetooth being mistakenly connected by others. 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. Guided by our mission of "Redefining HiFi with Unmatched Value", Fosi Audio continues to fuel its passion for the Hifi industry, ramp up R&D efforts, and co-create new HiFi equipment with users. We pledge to bring more amazing Hifi gear with high value for the price, innovative design, cutting-edge technology, and premium quality, to audiophiles worldwide. ## 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, Vacuum Tube x2, 12V/1.5A Power Supply x1 ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B0CJBKWF43 | | Best Sellers Rank | #27,982 in Electronics (See Top 100 in Electronics) #19 in Audio Component Preamplifiers | | Brand Name | Fosi Audio | | Customer Reviews | 4.5 4.5 out of 5 stars (574) 4.5 out of 5 stars | | Included Components | Fosi Audio P3 Preamplifier x1 | | Item Dimensions | 4.33 x 6.3 x 1.57 inches | | Item Highlight | Vacuum Tube Preamplifier with aptX HD/LL, Bass/Treble Tone Controls, RCA/AUX Connections for HiFi Stereo Active Speakers | | Item Weight | 500 g | | Manufacturer | Shenzhen Foresight Technology Co., Ltd. | | Maximum Output Power | 250mw | | Maximum Supply Voltage | 12 volts_of_direct_current | | Minimum Supply Voltage | 12 volts_of_direct_current | | Model | P3 | | Mounting Type | Freestanding | | Number Of Channels | 2 | | Number Of Items | 1 | | Part Number | P3 | | Unit Count | 1 Count | | Voltage | 230 volts | | Warranty Description | 24 Month Manufacturer | ## Product Details - **Item dimensions L x W x H:** 4.33 x 6.3 x 1.57 inches - **Manufacturer:** Shenzhen Foresight Technology Co., Ltd. - **Maximum Supply Voltage:** 12 volts_of_direct_current - **Minimum Supply Voltage:** 12 volts_of_direct_current - **Voltage:** 230 volts ## Images ![P3 Bluetooth Tube Preamp, Headphone Amplifier for Home Audio - Image 1](https://m.media-amazon.com/images/I/61NP2Uy22eL.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. ## 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.us/products/576801869-p3-bluetooth-tube-preamp-headphone-amplifier-for-home-audio](https://www.desertcart.us/products/576801869-p3-bluetooth-tube-preamp-headphone-amplifier-for-home-audio) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-10-30*