---
product_id: 576801869
title: "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"
brand: "fosi audio"
price: "$240.28"
currency: USD
in_stock: true
reviews_count: 13
category: "Fosi Audio"
url: https://www.desertcart.ec/products/576801869-fosi-audio-p3-tube-preamp-headphone-amplifier-home-audio-preamplifier
store_origin: EC
region: Ecuador
---

# Bluetooth 5.1 aptX LL/HD 54V True Tube Voltage Boost Precision Bass & Treble Tone Controls 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

**Brand:** fosi audio
**Price:** $240.28
**Availability:** ✅ In Stock

## Summary

> 🎧 Elevate your sound game with vintage warmth and modern wireless freedom!

## Quick Answers

- **What is this?** 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 by fosi audio
- **How much does it cost?** $240.28 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/576801869-fosi-audio-p3-tube-preamp-headphone-amplifier-home-audio-preamplifier)

## 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

- • **Warm Analog Tube Sound:** Experience rich, full-bodied audio with 54V tube amplification that elevates every note.
- • **Compact Powerhouse Design:** Lightweight 500g chassis fits any desktop or home setup, perfect for millennial pros craving style and substance.
- • **Versatile Multi-Device Hub:** Switch effortlessly between PC, Bluetooth, RCA, and AUX inputs for ultimate audio flexibility.
- • **Audiophile-Grade Components:** ELNA capacitors and precision taper pots deliver pristine sound with 103dB SNR and minimal crosstalk.
- • **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 that combines classic vacuum tube warmth with cutting-edge Bluetooth 5.1 aptX HD/LL wireless technology. Featuring a 54V tube voltage boost, audiophile-grade ELNA capacitors, and precise bass/treble tone controls, it supports multiple inputs and outputs including RCA, AUX, and headphones from 16Ω to 300Ω. Ideal for HiFi stereo setups and active speakers, the P3 delivers rich, detailed sound with low latency and high signal-to-noise ratio, all in a sleek, portable design.

## Description

desertcart.com: 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 : Electronics

Review: Great little preamp, it's worth it. - This made a huge difference in sound for me. Paired with my sound card on my computer and a set of Sony MDR-7506 headphones this makes a formidable combo. I also really like the fact that I can swap between pc audio and bluetooth with a switch and listen to just about anything.
Review: Nice look and size and features - The bluetooth connection is easy has great quality look. Has a good power ability. Provides great sound quality and clarity for the price.

## 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 | #23,095 in Electronics ( See Top 100 in Electronics ) #13 in Audio Component Preamplifiers |
| Brand | Fosi Audio |
| Color | Black |
| Customer Reviews | 4.4 4.4 out of 5 stars (482) |
| Item Weight | 500 Grams |
| Manufacturer | Fosi Audio |
| Mfr Part Number | P3 |
| Model Number | P3 |
| Power Source | AC |
| Unit Count | 1.0 Count |
| Warranty Description | 24 Month Manufacturer |

## Product Details

- **Brand:** Fosi Audio
- **Color:** Black
- **Item Weight:** 500 Grams
- **Manufacturer:** Fosi Audio
- **Power Source:** AC

## Images

![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 - Image 1](https://m.media-amazon.com/images/I/61XYoUopdEL.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

### ⭐⭐⭐⭐⭐ Great little preamp, it's worth it.
*by J***J on February 26, 2026*

This made a huge difference in sound for me. Paired with my sound card on my computer and a set of Sony MDR-7506 headphones this makes a formidable combo. I also really like the fact that I can swap between pc audio and bluetooth with a switch and listen to just about anything.

### ⭐⭐⭐⭐⭐ Nice look and size and features
*by W***E on February 1, 2026*

The bluetooth connection is easy has great quality look. Has a good power ability. Provides great sound quality and clarity for the price.

### ⭐⭐⭐⭐ best way to add system volume and tone controls.
*by A***R on December 21, 2024*

I love how simple this little pre-amp is. The unit boast decent specs too, with SNR above 103 db. The volume and tone control knobs are small, but even my big hands manage to use them OK. The tone controls are not linear, but are useful once you get used to using very small adjustments, and work very well and very silently. The main reason I was attracted to this particular unit was that it had BlueTooth 5.1, which is a big sonic improvement, now that I've heard it. Auto pairing can be a bit of a bother if you use your phone's bluetooth for other things. At this price this little Fosi Audio P3 is both a bargain and a sonic suprise, worth every penny.

## Frequently Bought Together

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-04-01*