Fosi Audio P3 Manuel utilisateur

P3 User Manual

Introduction

Thank you for purchasing the Fosi Audio P3 Tube Preamplifier!

The Fosi Audio P3 is a genuine tube preamp, with the tube working voltage

reaching up to 54V. It features the QCC3031 Bluetooth chip, supporting

aptX, aptX HD, and aptX LL audio formats, offering enhanced sound quality

and as low as 40ms latency. The P3 comes with RCA out, AUX out, and a

3.5mm headphone jack, perfectly suited for your desktop use, delivering

the ultimate auditory experience. The tubes are replaceable, adding to the

fun of personalizing your setup. Combined with the glacier-colored light, it

feels closer to nature. We believe that technology and nature can coexist

harmoniously, and technological innovation can serve to enrich our lives.

124

6 7 8 9 10 11

13 13

13.5mm headphone jack 2Volume knob

3Treble knob (±6dB)

6Power switch/mode selector

7Bluetooth reset switch: Hold for 3 seconds to clear Bluetooth pairing

8RCA input

11 DC 12V power in 12 Bluetooth antenna port 13 5654W tubes

9RCA output 10 AUX output

4Bass knob (±12dB)

5Mode indicator light: RCA mode - steady red light,

Bluetooth pairing mode - blue light flashing,

Bluetooth connection successful - steady blue light

Specifications

Package Contents

Fosi Audio P3 Tube Preamplifier × 1 5654W Vacuum Tube × 2

12V/1.5A Power Supply × 1 User Manual × 1

RMS Power 250mw @16Ω；150mw @32Ω；

32mw @250Ω；20mW @300Ω

Headphone Impedance 16-300Ω

Input

Output

SNR

Dynamic Range

THD

Noise Floor

Crosstalk

Frequency Response

Bluetooth Chip

Bluetooth Version

Bluetooth Range

Bluetooth Codecs

Power Input

Bluetooth，RCA

RCA，3.5mm headphone jack，

AUX Out

≥103dB

104dB

≤ 0.02%

64uV

95dB

20Hz-20kHz(±1dB)

QCC3031

5.1

≥10m

SBC/AAC/aptX/aptX HD/aptX LL

DC 12V/1.5A~3A

Operation Guide

1. Switch to the OFF position, install the Bluetooth antenna, and then plug

the tubes to the sockets. Ensure the pins align with the slots, and then turn

the volume to the lowest setting;

2. Connect the included 12V/1.5A power supply;

3. Depending on your setup, plug your amplifier, powered speakers, or

headphones into the P3's RCA output, AUX output, or headphone jack;

4. If you opt for a wired connection, use an audio cable to connect your

source device to the P3's RCA input terminal;

5. Switch to either the RCA wired or BT Bluetooth wireless position;

6. When using Bluetooth, connect to Fosi Audio P3 on your source device;

7. Adjust the volume and treble/bass to an appropriate level, and you're

ready to enjoy your music.

CD, DVD, etc.

Phone & Pad

Fosi Audio P3

Laptop & Macbook

Computer & Mac

TV & Projector Active Subwoofer

Passive Subwoofer

Active Speakers

Amplifier

Headphone

Passive Speakers

Precautions

1. As a genuine tube preamplifier, please allow me 15 seconds to preheat

the tubes after powering on, and then the sound can be output normally.

2. Avoid plugging and unplugging cables while the device is powered on to

prevent abnormal noises. This can also easily damage the product.

3. If you need to replace the tubes, please do so when the tubes have

cooled down to avoid burns or damage to the product.

Frequently Asked Questions

1. After connecting the product and turning it on, there's no sound during

playback?

Since the P3 is a tube preamp, the tubes require about 15 seconds to

preheat before they can operate properly. If there is still no sound after 15

seconds, please check if the cables are connected correctly, if the tubes

are properly plugged, and if the correct input mode is selected.

2. Why is the power indicator light very dim or constantly flashing after

powering on?

A blinking blue light in Bluetooth mode indicates it's awaiting a connection,

and the light will remain steady blue once connected. A flashing power

indicator light in RCA mode might suggest insufficient power supply.

Please ensure you're using a power supply between 12V/1.5A and 12V/3A.

3. How are the headphone output, RCA output, and AUX output on the

Fosi Audio P3 controlled?

By default, Fosi Audio P3 prioritizes headphone output, with RCA and AUX

outputting simultaneously. This means both RCA and AUX will output

signals at the same time; however, when a headphone is plugged in, the

signal will switch to the headphone output, and there will be no signal on

RCA and AUX outputs.

4. How do I clear the Bluetooth pairing record?

On the rear panel of the Fosi Audio P3, there's an RST button. Press and

hold for 3 seconds to clear Bluetooth pairing. If you're in Bluetooth mode

at this time, the indicator light will flash blue.

If you have any further questions, please contact our support team at

[email protected]

Warranty and Maintenance

Fosi Audio pledges to give a 24-month limited warranty and support from

the date of purchase. If you encounter any problem when using our

product, please contact our support team at [email protected].

About Us

Fosi Audio designs and builds innovative audio products with all your

music in mind. Great sound, simple but elegant designs, high-quality

components, and truly useful features are what Fosi Audio pursues. We

sincerely hope you can get as much enjoyment from our products as we’ve

had to create them!

Our Website: www.fosiaudio.com

Amazon Store: www.amazon.com/fosiaudio

Facebook Page: Fosi Audio

Youtube Channel: Fosi Audio

Whatsapp: +86 13716612254

After-Sales Service and Technical Support Email:

[email protected]

Get online support

产品简介

󲒝󴽶󲐦󵁾󱈊󶚌󳢛󱻔󳼃󱗣󴈇󲢸󱲬󶍊󶚃

󶚌󲦨󱆚󲺱󳪅󳢛󱻔󳼃󱗣󴈇󶎥󳢛󱻔󳼃󲅧󱋶󳢛󱜜󵌏󱗆󶚎󶚍󱔐󵔘󳢎

󵸤󵍫󶚌󶚉󶚌󶚊󴠶󳗂󴘋󳖰󶎥󲢩󲙻󶎥󶎥󵬿󵯜󱊺󵋢󲮲󲊎󶎥

󲝊󱌵󲩬󱴁󳧪󵬿󵁹󱉿󱝛󱋨󴕏󶚍󶚉󳧪󲉵󲥯󶚌󲝊󱌵󶎥󱠜

󶚌󶚎󴎔󲪰󵋢󱖑󶎥󱼐󴋯󱛍󵒞󲐦󳧪󲯂󵪰󱌙󳢎󳜗󱰊󶎥󲆧󴈹󲐦󲫷󴕐󳧪󱞼󴴜󱋭󵷗

󳢛󱻔󳼃󱝿󱉿󲩬󲛜󶎥󱰥󱘶󱝿󳜑󲎥󶎥󲞧󵒞󱕈󲅟󴗎󳧪󳏚󱓣󶎥󲩬󱘶󵂅󵌢󴕆󳒡󲖏󱊆

󳩞󱍻󶎥󳴴󲗾󱆨󴕆󳒡󱝿󱉿󱠜󴽤󱔋󱻜󶎥󳴴󲗾󱖱󲤩󱝿󱉿󲪄󱘷󱈨󲩬󴋯󱴁󳧪󳢅󳂮

1 2 4

6 7 8 9 10 11

13 13

1󶚌󶚎󴎔󲪰󱝳 2󵬿󵔠󲥄󵟿

3󵸤󵬿󲥄󵟿󶎡󶚏󶎢

6󳢛󳇿󲉿󱔍󲶖󲊎󵍚󲙣

7󴠶󳗂󵔞󴋏󲉿󱔍󶚆󵣐󲚃󶚌󳴵󳅶󵦴󴠶󳗂󵒞󱽽

8󵋢󱓿

11 󶚊󶚋󳢛󳇿󱝳 12 󴠶󳗂󱲮󴈟󲜟󱝳 13 󶚎󶚏󶚎󶚍󳢛󱻔󳼃

9󵋢󱖑 10 󵋢󱖑

4󱋨󵬿󲥄󵟿󶎡󶚊󶚋󶎢

5󲶖󲊎󲚁󳲝󳏚󶚆󲶖󲊎󴈂󳏚󲆸󱉈󶎥󴠶󳗂󵒞󱽽󲶖󲊎󴠶󳏚󵤺󳐬󶎥

󴠶󳗂󵌯󲜟󲖎󱘵󴠶󳏚󲆸󱉈

规格参数

包装清单

󶚌󳢛󱻔󳼃󱗣󴈇󲢸󱲬󶍊󶚊 󶚎󶚏󶚎󶚍󳢛󱻔󳼃󶚋

󶚊󶚋󶚊󶚎󳢛󳇿󵍓󵒞󶍊󶚊 󴽈󲦇󱈀󶚊

功率 󶚋󶚎󶚉󶚊󶚏󶚇󶚊󶚎󶚉󶚌󶚋󶚇

󶚌󶚋󶚋󶚎󶚉󶚇󶚋󶚉󶚌󶚉󶚉

耳机阻抗 󶚊󶚏󶚌󶚉󶚉

输入

输出

信噪比

动态范围

失真

底噪

串扰

频率响应

蓝牙芯片

蓝牙版本

蓝牙连接距离

蓝牙传输格式

电源输入

󶎥

󶎥󶚌󶚎󴎔󲪰󱝳󶎥



󶙼󶚊󶚉󶚌

󶚊󶚉󶚍

󶙻󶚉󶚉󶚋

󶚏󶚍

󶚒󶚎

󶚋󶚉󶚋󶚉󶚊

󶚌󶚉󶚌󶚊

󶚎󶚊

󶙼󶚊󶚉



󶚊󶚋󶚊󶚎󶚌

操作指南

󶚊󱾊󲉿󱔍󲙢󱗆󲯙󶎥󱼍󴰖󴠶󳗂󱲮󴈟󶎥󳒡󱞞󲘈󳢛󱻔󳼃󲝌󱗆󲈔󲈦󶎥󳁛󲒍󵟙󴑷

󴳔󱽽󶊕󲝌󲵲󶎥󲜟󳪦󱾊󵬿󵔠󴽗󱗆󲩷󱾓󶚇

󶚋󵌯󲜟󵦔󲆧󳧪󶚊󶚋󶚊󶚎󳢛󳇿󶚇

󶚌󲮯󲛨󱌙󳢎󱫄󲧧󱾊󱘵󲢸󲖔󲪀󳇿󵬿󳼓󴎔󲪰󲝌󱗆󶚌󳧪󵋢󱖑󵋢󱖑

󲖔󴎔󲪰󱻘󱆤󶚇

󶚍󱴆󲬒󵍚󲙣󲪀󴈟󵌯󲜟󶎥󱌙󳢎󵬿󵯜󴈟󱉨󵬿󳇿󴼒󱲌󵌯󲜟󱗆󶚌󳧪󵋢󱓿󳹑

󱻔󶚇

󶚎󱾊󲉿󱔍󲙢󱗆󲪀󴈟󲖔󴠶󳗂󲥙󴈟󲯙󱋧󶚇

󶚏󱌙󳢎󴠶󳗂󵌯󲜟󲥯󶎥󱪲󵬿󳇿󴼒󱲌󱆤󵌯󲜟󶚌󶚇

󶚐󴽗󴗞󵬿󵔠󱠜󵸤󱋨󵬿󱗆󱞘󵍓󳧪󲾨󲇲󶎥󱜄󱝿󲉿󱵏󱉅󱝨󵬿󱇪

󳺫󲠧󲢸󶍊

󲗉󲪰󶎥󲇲󲫵

󶚌

󳹶󴼄󲪢󳢛󴑮󶎥

󱞀󲊎󳢛󴑮󶎥

󳢛󴴙󶎥󲘓󲋰󱊄 󲪀󳇿󱋨󵬿󳐙

󲥙󳇿󱋨󵬿󳐙

󲪀󳇿󵬿󳼓

󱘵󳛯󲢸󱲬󶍊

󴎔󲪰

󲥙󳇿󵬿󳼓

注意事项

󶚊󱋶󱇔󱆚󱞀󳪅󲻖󳧪󳢛󱻔󳼃󱗣󴈇󶎥󴽋󱪲󲉿󲪰󱞞󴈹󲖏󶚊󶚎󳴵󲥯󵥄󵯏󳑘󳢛󱻔󳼃󶎥

󳒡󱞞󱱶󵬿󱾵󴑚󲻖󲆸󵋢󱖑󶚇

󶚋󴽋󵏐󱓧󱪲󲉿󲪰󳘟󲍿󱆥󲝌󶗸󴈟󲫆󱉿󱓧󱉁󳢅󲊁󲆸󳧪󱱶󱡝󶎥󵌪󲮭󱇹󱼽󲦌󱽽

󱉁󱡑󵍱󲖎󲛙󱫙󶚇

󶚌󱴆󵩏󲩬󲛜󳢛󱻔󳼃󶎥󴽋󱪲󳢛󱻔󳼃󱕏󱜅󳘟󲍿󱆥󲩬󲛜󶎥󱉿󱓧󳑖󱊾󲖔󴍦󱽽󱉁󱡑

󵍱󲖎󲛙󱫙

常见问题

󶚊󱉁󱡑󵌯󲜟󱴁󱞞󶎥󲉿󲪰󲠧󲢸󳀕󲪀󱱶󵬿󶚈

󳢗󱈨󶚌󲦨󳢛󱻔󳼃󱗣󴈇󶎥󳢛󱻔󳼃󵩏󴳔󶚊󶚎󳴵󲅨󱞃󳧪󲥯󵥄󵯏󳑘󲗋󴑚󲻖󲊎󲅧󱋶󶚇

󱴆󲬒󶚊󶚎󳴵󱞞󵌩󲦨󳀕󲪀󱱶󵬿󶎥󴽋󲰶󲭛󴈟󲫆󲦨󱞶󵌯󲜟󲻖󳯒󳢛󱻔󳼃󲦨󱞶󲝌󱴁

󶎥󵋢󱓿󲶖󲊎󲦨󱞶󵍚󲙣󲻖󳯒

󶚋󱇔󱉚󱇢󲉿󲪰󱞞󳢛󳇿󲚁󳲝󳏚󲌇󲌭󲊰󲖔󴍦󱆚󳩚󵤺󳐬󶚈

󴠶󳗂󲶖󲊎󲌄󵌯󲜟󳘟󲍿󱆥󴠶󳏚󵤺󳐬󲦨󲻖󲆸󳜘󴾵󶎥󵌯󲜟󲖎󱘵󱞞󴠶󳏚󲆸󱉈󶚇

󲶖󲊎󱆥󳢛󳇿󲚁󳲝󳏚󵤺󳐬󱝿󴑚󲦨󱩫󱇔󳢛󳇿󳢛󱜜󱆧󵄃󶎥󴽋󳁛󲒍󱌙󳢎

󶚊󶚋󶚊󶚎󶚊󶚋󶚌󳧪󳢛󳇿󶚇

󶚌󶚌󳧪󴎔󲪰󵋢󱖑󶎥󵋢󱖑󱉿󱝛󵋢󱖑󱴆󱋯󲜡󱗌󶚈

󶚌󳧪󶈞󴻸󴼒󴋏󱇔󴎔󲪰󵋢󱖑󱊲󱓢󶎥󱠜󱞜󲥯󵋢󱖑󱜄

󱠜󵋢󱖑󱊴󱞜󲥯󲪀󱍻󱞇󵋢󱖑󶚇󱋠󲋒󲜟󱓿󴎔󲪰󱞞󶎥󱍻󱞇󱊴󱖝󲛜󱗆󴎔

󲪰󵋢󱖑󶎥󱠜󵋢󱖑󱊴󳀕󲪀󱍻󱞇

󶚍󱴆󱋯󳅶󵦴󴠶󳗂󵒞󱽽󴼄󲋔󶚈

󶚌󱞞󲚛󲫵󲪀󲚃󵡿󶎥󵣐󲚃󶚌󳴵󱝿󱉿󳅶󵦴󴠶󳗂󵒞󱽽󶎥󵌪󲥯󱴆

󲬒󵍚󲙣󳧪󲦨󴠶󳗂󲶖󲊎󶎥󲚁󳲝󳏚󱊴󱝩󱇔󴠶󳏚󵤺󳐬

󱴆󲬒󲐦󵌩󲪀󱔐󱉰󵤾󵯣󶎥󴽋󴎴󴁛󲖏󱊆󳧪󲢩󲙻󱩭󵥯󲖔󲗩󲝉󱆥󱆚󵯀󱇇󳧪󱈦󴉔󳭦

󳃂󴴛󲖏󱊆󳧪󲢩󲙻󵯀󵪰



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Electro-Harmonix

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Viatron

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GME

GME GA9800 Manuel utilisateur

Atlas

Atlas CP700 Manuel utilisateur

Roland

Roland KC-1000 Manuel utilisateur

Pyle

Pyle PFMRA350BW Manuel utilisateur

Advantage

Advantage S-250 Manuel utilisateur

IRT Electronics

IRT Electronics DVA-3007 Manuel utilisateur

Dimavery

Dimavery BA-100 Series Manuel utilisateur

Sony

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Schertler

Schertler ROY X Manuel utilisateur