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【Ultra Small Phono Preamp】The Fosi Audio Box X1 Phono Preamp converts the sound quality of the turntable to line level to improve the audio and volume. Ultra-small phono preamp with portable and durable metal shell Provides ultra-low noise audio performance and superior sound quality, reducing distortion. Compatible with black tape recorder/player/stereo/DJ mix, useful for home audio systems where DIY is desired

【IMPROVE SOUND QUALITY】Phono preamp increases the phono audio level of your turntable to the line level suitable for speaker/stereo receiver, increasing volume and improving sound quality. Note: You can output RCA line output and AUX headphone output at the same time

Product Parameters: Input Connector: MM Turntable Input, Ground Post Input, 12V DC Input, MM Turntable Input, Ground Post Input, 12V DC Input. Output Connector: 3.5MM headphone output, RCA output Output: Active (Powered) Speaker, Headphone, Amplifier Active Speaker, Headphone, Amplifier

Easy to operate and use: Fosi Auido player front amplifier is easy to install. Easy to connect the front amp to the swivel table. Then connect it to your computer, stereo receiver, bookshelf speaker and other latest audio equipment to enjoy the high quality sound

[Shipping Details] Fosi Auido Phono Preamp x 1 + 12V Power Adapter x 1 + User Manual x 1 + 24 Month Product Warranty. Your experience is most important to us. If you have any problems with the product, please feel free to click on "contact seller" in your order history and contact us

5-band EQ preamp: Adopts 5PCS JRC4558 opire amplifier, each responds to one frequency band and processes audio signals individually. Equipped with 5 bands individual control knobs, you can easily control and set the frequency range as needed

Bypass design is suitable for more uses: Using bypass button to turn off the EQ preamp, the audio signal will be output directly from IN to OUT without processing, which is convenient to enjoy the original sound

Attractive appearance and powerful design: All metal case and gold-plated PCB panels, aluminum knurled knob, all I/O interface are gold plated, ensuring a tight connection of the original audio signal and smooth transmission and minimize signal loss

Mini Size with DC 5V: Compact design and easy to carry, easy to use in most scenarios, no need to need to provide a separate power supply, very suitable for most users' daily needs

COMPACT AND DURABLE DESIGN: Phono preamps are housed in a metal shell for rugged durability. Compact size and portable, easy to integrate into any setup

Signal Conversion: Use the phono turntable preamp to convert the phono signal to line-level signal, easily convert the record into digital sound files, providing excellent sound quality

Independent Volume Control: The gramophone preamp provides independent output volume control using an ultra-low noise opping amplifier

RIAA Equalization: The phono preamp equalizes the turntable signal according to RIAA specifications to ensure accurate playback and provide high quality sound

MULTIPLE CONNECTION OPTIONS: 2 (Large, R) input, 2 (Large, R) output, and 1 1/4" output to meet your various acoustic equipment connection needs

Multiple connection options: 2 RCA (L), 2 RCA (L, R) output, and 1 1/4" output to meet a variety of acoustic equipment connection needs

Signal Conversion: Use the phono turntable preamp to convert the phono signal to line-level signal, easily convert the record into digital sound files, providing excellent sound quality

Independent Volume Control: The gramophone preamp provides independent output volume control using an ultra-low noise opping amplifier

COMPACT AND DURABLE DESIGN: Phono preamps are housed in a metal shell for rugged durability. Compact size and portable, easy to integrate into any setup

RIAA Equalization: The phono preamp equalizes the turntable signal according to RIAA specifications to ensure accurate playback and provide high quality sound

Product Introduction: The core of the NE5532 optics amplifier is adopted with high quality capacitors and a high-precision 5-color ring metal film resistor

Size Parameters: Mounting hole: 0.1 inch (3.0 mm), Board size: 2.0 x 1.6 x 0.6 inches (50 x 40 x 16 mm), small and easy to store in small devices

Range of application: Use to reduce the sensitivity of the sound source

Electrical/Design: DC single power supply, power supply range 12 - 35 V, operating current: about 600 mA, double panel design, easy to use, good effect

Gain: 5 (default). Turn R5 and R6 to 100K Ohm to 10 changes)

Boasting significant improvements in both functionality and size, the Douk Audio & Nobsound VU3PRO Amplifier/Speaker Selector is the ultimate choice for audio fans. The 2-IN-2-OUT design supports MAX 350W power through, and is compatible with a wide range of digital and vacuum tube amplifiers. This switch box provides a flexible switching feature that allows two groups of speaker jacks to output at the same time, allowing you to compare and switch without repeatedly inserting and unplugging the cable

The VU3PRO features a custom made large VU meter and measures 85*45mm to perfectly match your audio devices. With 35 color backlight colors and 5 levels of brightness adjustment, you can adjust it to suit different scenarios. Moreover, it supports 20 levels gain and 30 levels of sensitivity adjustment, and can be linked with different audio signals to enjoy live audio visual feed

The VU3PRO has added wired/wireless input and dual control. When you install the microphone pickup near your audio system, the clear indicators on the warm two VU meters display the music beats clearly and activate the audio fest dynamically. Easy to switch most settings with buttons and remote controls, simplify the process of A/B comparison and all settings are saved after shutdown

The VU3PRO integrates premium components for superior sound quality. Large AC 250V 5A relay, isolated high precision HL current sensor, built-in high power load resistance, solid CNC full aluminum alloy frame to protect class A tube amplifier, large solid copper speaker jack, you can enjoy the most beautiful high fidelity sound without affecting the sound quality

For a comfortable audio experience, the VU3PRO offers user-friendly design and functionality. Not only is it easy to switch from the remote control, but it also saves the settings after shutdown, so you can enjoy it immediately next time you use it. The package also includes VU3PRO, power adapter, remote control (no batteries), USB cable (Type-C), which is easy to set up

Package includes: 1 x Fosi Audio P4 Preamp

Compact and Portable: This mini stereo audio preamp has a compact size, making it easy to carry and use. The size is 88mm x 38mm x 38.5mm and is compact enough to fit in the palm of your hand. This makes it convenient to listen to music on the go or use while on the go

【Wide Compatibility】Compatible with all audio devices.This mini stereo audio preamp is widely compatible with various devices such as DVD, CD, Set-top box, MP3, TV, mobile phones, computers, tablets, turntables, sound cards, guitars, bass, electronic instruments, game consoles, and more. Connects seamlessly to any device for a variety of music and audio sources

【3.5mm Jack Output】Flexible connection option. The input and output of this mini stereo audio preamp is a 3.5mm jack, providing stereo output. Commonly used to control audio loop strings, between audio sources and preamps, or between preamp and amplifier. 3.5mm jack is a common connection standard and is compatible with most devices

【High Quality Sound Circuit】 Achieve even sound quality This mini stereo audio preamp eliminates the problem of treble dull, low bass and weaken even when playing music at low volume. Considering the characteristics of human hearing properties, it adopts a isonous circuit, which amplifies treble and bass even at low volume, making the sound range wider and better. This allows you to enjoy music without compromising the original sound quality

Lossless Signal and Interference Resistant: High quality audio transmission. This mini stereo audio preamp is a stereo switch box for lossless signal transmission. Equipped with sturdy aluminum alloy shell, anti-interference and protect the signal quality. Provides clear and clean sound with less noise and interference when playing music or voice

Multiple Audio Inputs: Bluetooth / RCA / Flash Memory / TF card input is fully compatible with iPod, Smartphone, MP3, TV, CD player, laptop, desktop computer and other streaming media player etc

MULTIPLE FUNCTIONS: P2 can be used as a vacuum tube preamp connected between the audio source and the amplifier or active speaker, greatly improve the sound quality. The default 6K4 can be directly replaced 6J1 / 6J4 / GE5654 / 6AK5 / 6*1n to enjoy various styles of HiFi sound

The P2 can be used as a headphone amplifier, convenient for listening to lossless music at one time or at night. RCA and 3.5mm headphone jack can output at the same time to meet more needs

P2 can be used as a digital player with flash memory and TF card input, supports MP3 and other lossless formats such as APE, FLAC, WAV, WMA etc. No driver or plug needed, convenient for enjoying road and outdoor fun

HiFi Clear Sound with Tone Control and Proper Circuit Layout: Adopts vacuum tube design to filter out digital sound from common sources and make a warm, sweet, full and mellow sound much softer and easier to hear

A pre-amp kit that operates on a single power supply

Volume Control Function

3 Tone Control Function

DIP socket for easy opp amp replacement

Comes with an opire amp power supply voltage adjustment function