---
product_id: 576801869
title: "Fosi Audio P3 Bluetooth Tube Preamp, Headphone Amplifier for Home Audio"
brand: "fosi audio"
price: "€ 186.71"
currency: EUR
in_stock: true
reviews_count: 13
category: "Fosi Audio"
url: https://www.desertcart.hr/products/576801869-fosi-audio-p3-bluetooth-tube-preamp-headphone-amplifier-for-home
store_origin: HR
region: Croatia
---

# Bluetooth 5.1 aptX LL/HD 54V True Tube Amplification Bass & Treble Tone Controls Fosi Audio P3 Bluetooth Tube Preamp, Headphone Amplifier for Home Audio

**Brand:** fosi audio
**Price:** € 186.71
**Availability:** ✅ In Stock

## Summary

> 🎧 Elevate Your Audio Game with Vintage Warmth & Modern Wireless Freedom

## Quick Answers

- **What is this?** Fosi Audio P3 Bluetooth Tube Preamp, Headphone Amplifier for Home Audio by fosi audio
- **How much does it cost?** € 186.71 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/576801869-fosi-audio-p3-bluetooth-tube-preamp-headphone-amplifier-for-home)

## 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

desertcart.com: Fosi Audio P3 Bluetooth Tube Preamp, Headphone Amplifier for Home Audio | Vacuum Tube Preamplifier with aptX HD/LL, Bass/Treble Tone Controls, RCA/AUX Connections for HiFi Stereo Active Speakers : Electronics

Review: A Musician's or Music Fans Dream! - Pros: I have been a musician and music fan for my entire life. I have a substantially large music collection of many different genres. I’m one of those people who listens to the entire album with headphones or sitting in the center between two speakers, reading along with the lyric sheet. Sound quality and production are very important to me. I prefer studio recordings vs. live recording for that reason alone. Lets just say I’m a wanna’ be audiophile. When I received my Fosi P3 it changed the entire listening experience for me. I don’t know if it’s the tubes and the chips that give the music a spacial and more separated, clearer stereo sound. But whatever it is, Fosi got it right! I’m using it as a pre amp for my old Sony receiver which I never really was happy with the sound of, and now the Fosi P3 has improved the sound 100%. The clarity and spacial separation of hearing each instrument individually and and every little nuance in the production of a recording is truly brilliant and amazing. I run the Fosi’s output to the input of a channel on the Sony with bass & treble on the Sony in the flat position. So I only use the amp part of the Sony for power. I have the volume of the Sony at the two o’clock position. I use the Fosi’s delicate and accurate volume, bass and treble controls only. If you move these controls ever so slightly you can hear a substantial difference in eq. The bluetooth is perfect and connects immediately to my iPhone with no drop outs, static or interference. I intend to have a Fosi in every room of my home. Features I would like to see in Fosi’s future are multiple inputs and a remote control. Did I mention how great headphones sound in the Fosi? A new and surprisingly wonderful experience altogether. Another cool feature is when you plug in headphones, it mutes the speakers. I myself love this feature. I could go on and on but I’ll just say, you will not find a better way of listening to music for under one hundred dollars. If you really love and listen to music like I do, buy the Fosi P3, You won’t be disappointed. Btw, I now have 3 of these little amps. The same one in all 3 separate rooms Cons: Only 1 Input. No Remote. The tubes are difficult to insert. Fosi support was outstanding and sent me a video of unscrewing the gold rings out before inserting the tubes by even just unscrewing the gold ring was very difficult to unscrew and screw back in. Then the tubes are even more difficult to insert. I followed Fosi's instructions but the tube pins are definitely crooked and don't line up perfectly with the holes. You have to keep bending the pins carefully to get them to all fit in and when you do finally get them to line up the tubes have to be pressed down so hard that you feel you might break them. I took me almost 30 minutes to get 1 tube in. After buying 3 of these preamps, the tube insertion did not getting any easier, I have to say Fosi need to address this issue. Update 1-26-26 : I own 3 of these units and have found the Headphone Jack in all three have the Left & Right reversed. So what should be in the right ear you should be hearing in the left ear.
Review: Warm sound - The install goes between my phono preamp and my amplifier. The bluetooth installation populated my apple tv immediately and the music coming through had a clear, warm sound. When I played some vinyl, the separation and music clarity was awesome in my 80’s bookshelf JBLs. The background noise levels were very low considering I was wearing open back headphones listening to an album. It filtered out the harshness commonly heard from records. The biggest improvement is that warm, well rounded sound that the NOS GE JAN 5654w tubes produce. The tubes actually affect the sound on this unit as you have to wait 20-30 seconds for them to warm up. The tubes aren’t just for looks like some other units i tried. It looks cool with the vacuum tubes lighting up and going from dim to bright as they warm up. The quality is very good as the chassis and knobs are aluminum with a definite detent for volume, bass, and treble. It’s easy to use with a flick of a switch you switch from your bluetooth source to your vinyl. I must say the customer service was stellar. There was a problem with the vacuum tubes but they responded and sent the replacements from mainland China. It was shipped immediately but obviously took some time but it was worth the wait. The only thing I would change is to have the sub out active when headphones are attached so i can activate my exciters in my recliner for bone deep bass. Without the phones attached the sub out is obviously active. I would highly recommend this headphone preamp if you want to take the “shrill” edge off your digital music and enjoy vinyl with low noise and a full sound.

## 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 | #24,909 in Electronics ( See Top 100 in Electronics ) #16 in Audio Component Preamplifiers |
| Brand Name | Fosi Audio |
| Customer Reviews | 4.5 out of 5 stars 570 Reviews |
| 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 |
| Item dimensions L x W x H | 4.33 x 6.3 x 1.57 inches |
| 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

![Fosi Audio 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.

## Customer Reviews

### ⭐⭐⭐⭐⭐ A Musician's or Music Fans Dream!
*by D***O on December 5, 2023*

Pros: I have been a musician and music fan for my entire life. I have a substantially large music collection of many different genres. I’m one of those people who listens to the entire album with headphones or sitting in the center between two speakers, reading along with the lyric sheet. Sound quality and production are very important to me. I prefer studio recordings vs. live recording for that reason alone. Lets just say I’m a wanna’ be audiophile. When I received my Fosi P3 it changed the entire listening experience for me. I don’t know if it’s the tubes and the chips that give the music a spacial and more separated, clearer stereo sound. But whatever it is, Fosi got it right! I’m using it as a pre amp for my old Sony receiver which I never really was happy with the sound of, and now the Fosi P3 has improved the sound 100%. The clarity and spacial separation of hearing each instrument individually and and every little nuance in the production of a recording is truly brilliant and amazing. I run the Fosi’s output to the input of a channel on the Sony with bass & treble on the Sony in the flat position. So I only use the amp part of the Sony for power. I have the volume of the Sony at the two o’clock position. I use the Fosi’s delicate and accurate volume, bass and treble controls only. If you move these controls ever so slightly you can hear a substantial difference in eq. The bluetooth is perfect and connects immediately to my iPhone with no drop outs, static or interference. I intend to have a Fosi in every room of my home. Features I would like to see in Fosi’s future are multiple inputs and a remote control. Did I mention how great headphones sound in the Fosi? A new and surprisingly wonderful experience altogether. Another cool feature is when you plug in headphones, it mutes the speakers. I myself love this feature. I could go on and on but I’ll just say, you will not find a better way of listening to music for under one hundred dollars. If you really love and listen to music like I do, buy the Fosi P3, You won’t be disappointed. Btw, I now have 3 of these little amps. The same one in all 3 separate rooms Cons: Only 1 Input. No Remote. The tubes are difficult to insert. Fosi support was outstanding and sent me a video of unscrewing the gold rings out before inserting the tubes by even just unscrewing the gold ring was very difficult to unscrew and screw back in. Then the tubes are even more difficult to insert. I followed Fosi's instructions but the tube pins are definitely crooked and don't line up perfectly with the holes. You have to keep bending the pins carefully to get them to all fit in and when you do finally get them to line up the tubes have to be pressed down so hard that you feel you might break them. I took me almost 30 minutes to get 1 tube in. After buying 3 of these preamps, the tube insertion did not getting any easier, I have to say Fosi need to address this issue. Update 1-26-26 : I own 3 of these units and have found the Headphone Jack in all three have the Left & Right reversed. So what should be in the right ear you should be hearing in the left ear.

### ⭐⭐⭐⭐⭐ Warm sound
*by R***P on September 9, 2026*

The install goes between my phono preamp and my amplifier. The bluetooth installation populated my apple tv immediately and the music coming through had a clear, warm sound. When I played some vinyl, the separation and music clarity was awesome in my 80’s bookshelf JBLs. The background noise levels were very low considering I was wearing open back headphones listening to an album. It filtered out the harshness commonly heard from records. The biggest improvement is that warm, well rounded sound that the NOS GE JAN 5654w tubes produce. The tubes actually affect the sound on this unit as you have to wait 20-30 seconds for them to warm up. The tubes aren’t just for looks like some other units i tried. It looks cool with the vacuum tubes lighting up and going from dim to bright as they warm up. The quality is very good as the chassis and knobs are aluminum with a definite detent for volume, bass, and treble. It’s easy to use with a flick of a switch you switch from your bluetooth source to your vinyl. I must say the customer service was stellar. There was a problem with the vacuum tubes but they responded and sent the replacements from mainland China. It was shipped immediately but obviously took some time but it was worth the wait. The only thing I would change is to have the sub out active when headphones are attached so i can activate my exciters in my recliner for bone deep bass. Without the phones attached the sub out is obviously active. I would highly recommend this headphone preamp if you want to take the “shrill” edge off your digital music and enjoy vinyl with low noise and a full sound.

### ⭐⭐⭐⭐⭐ Works well for me!
*by S***K on March 2, 2025*

I may not be using this in my system to it's full extent, or as intended, but the Fosi P3 is doing exactly what I need it to do. No need for the Bluetooth, not using the tone controls or the volume control... BUT I needed to take the edge out of the top end of a Fosi BT20A Pro. While I've been very happy with the BT20A Pro, certain tones in the upper octaves can catch you by surprise... a little clangy, zingy, edgy (worsened by the speaker I use). I went with the P3 because I read so many times over how it's well paired with Fosi amps. Inserting the P3 between sources and the BT20A is all it needed. Edge rounded off nicely! BUT there's more! Unexpectedly, the P3 has brought more fullness to the sound from bottom to top. Instrument separation is clean... focus is tight. Class D amps get a rap for vocals being forward. I notice the depth is back a bit more now... vocals seem more precisely placed in the sound stage. I was using tone controls but I am now back to flat, where it "should" be. Now tone controls add juice instead of getting it to flat... flat is flat now. I don't know how "tubey" this bugger is... it's not "yummy" or "syrupy" or whatever the audiophile head words are... it took the edge off and left all of the precision and beefed up the bottom and top. For me, a fantastic addition to the kit. Why no tone controls or volume control? I'm glad you asked... I use a WiiM Pro Plus as a hub of sorts. That way I can control volume and use the EQ in the awesome WiiM app. Fluance RT 82 with an AT VMN30EN cart upgrade, into an iFi Zen phono, into the WiiM... clean pass through RCA to Fosi P3 and finally RCA into Fosi BT20A Pro with Sparkos SS3602 op amp upgrade. Streaming and phono go through the P3. The BT20A feeds Sony SSCS5 and Elac 1010 Sub (crossover is about 70) very nicely. Someday I'll upgrade that Sony, but for now, it works well for me. Full recommendation for this Fosi P3 use case. I'll also add that the biggest impact upgrade in the kit was the Sparkos op amps. Those little bad boys do amazing things for class D amps.

## 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
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- Monoprice 1.5ft Premium 2 RCA Plug/2 RCA Plug M/M 22AWG Cable - Black

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-10-25*