The Fosi Audio Phono Preamp is a versatile and high-quality device designed for turntable enthusiasts and audiophiles. This preamplifier is equipped with low-noise integrated circuits and premium components to ensure clear sound quality by converting phono signals to line level signals.

Its three switchable gain modes (39, 42, 45 dB) allow for customizable control and outstanding compatibility with various audio systems. One notable feature of the Fosi Audio Phono Preamp is its tube preamplifier functionality, which adds warmth and smoothness to the sound.

It comes with a 3. 5mm AUX input, allowing you to connect other audio sources such as smartphones or MP3 players. The preamp also has a grounding post that protects your turntable from interference.

Additionally, this preamplifier offers DIY possibilities as it supports different vacuum tube models like 6K4, 6J1, 6J4, GE5654, 6AK5, and more. By replacing the vacuum tubes, you can further customize your stereo system's sound signature.

Please note that this product is specifically designed as a preamplifier and cannot be directly connected to passive speakers without an amplifier in between. In summary, the Fosi Audio Phono Preamp provides an affordable entry into high-end analog sound reproduction.

With its low-frequency noise removal capabilities and customizable gain levels, it ensures exceptional audio performance for your turntable setup or other audio sources when used in conjunction with an amplifier.

The Douk Audio ST-01 PRO Bluetooth Tube Amplifier with VU Meter is a versatile and high-quality audio amplifier that offers various input options and impressive power output. Featuring Bluetooth 5.

0 connectivity, this amplifier allows you to easily connect your devices wirelessly for seamless audio streaming. It also supports USB (PC-USB), Coaxial, Optical, RCA, and U-disk inputs (only supported by the ST-01 PRO model), giving you multiple choices for connecting different audio sources.

With a maximum output power of 100W+100W at 4Ω impedance, this tube amplifier delivers clear and powerful sound reproduction. The VU meter adds a classic touch to the design while providing visual feedback on the audio levels.

The ST-01 PRO supports various formats such as MP3, WAV, WMA, FLAC, and APE when using the U-disk input. It can accommodate up to 64GB of storage capacity for your music collection. Equipped with treble and bass adjustment knobs with a range of ±6dB, you can fine-tune the sound according to your preferences.

The system is compatible with PCs running XP/W7/W8/W10/MAC/Linux operating systems via USB connection. With dimensions of 115*98*54mm (4. 53*3. 86*2. 13in) and weighing only 634g (1. 40lb) for the ST-01 model or 661g (1.

46lb) for the ST-01 PRO model, this compact amplifier is easy to fit into any space. Overall,the Douk Audio ST-01 PRO Bluetooth Tube Amplifier with VU Meter offers an impressive range of features including versatile connectivity options,a powerful output,and customizable sound adjustments,making it an excellent choice for audiophiles seeking high-quality sound amplification in a compact package.

The Douk Audio P2 Bluetooth Tube Preamp Headphone Amplifier is a versatile and powerful device that enhances your audio experience. With multiple audio input options including Bluetooth, Stereo RCA, U-disk, and TF Card, you can easily connect various devices and enjoy your favorite music in high quality.

The amplifier also features a stereo RCA output as well as a 3. 5mm headphone jack for convenient listening options. This amplifier supports a wide range of formats for U-disk and TF Card playback, including MP3, WMA, APE, FLAC, and WAV files.

It has a maximum storage capacity of 32G for both U-disk and TF card usage. The tube model used in this amplifier is the 6K4*2 which ensures warm and rich sound reproduction. With an impressive frequency response of ±3dB (20Hz-20KHz), this amplifier delivers balanced sound across the entire spectrum.

You can also adjust the treble/mid/bass range by ±6dB to customize your listening experience according to your preferences. The Douk Audio P2 Bluetooth Tube Preamp Headphone Amplifier has an input sensitivity of 0.

775V with low THD (Total Harmonic Distortion) of only 0. 05%, guaranteeing clear and distortion-free audio playback. The SNR (Signal-to-Noise Ratio) is ≥98dB ensuring minimal background noise interference.

This compact amplifier operates on DC 12V power supply and has dimensions of 115*128*33mm / 4. 53*5. 04*1. 30in making it suitable for desktop or portable use.

The FX-AUDIO TUBE-03 Mini HiFi Preamplifier with Vacuum Tube Amplifier is a versatile and practical audio device that can be easily integrated with active speakers and power amplifiers. Its wide compatibility ensures it can work seamlessly with the majority of devices available in the market.

One of its standout features is the replaceable 6K4 vacuum tubes design, which optimizes the circuit and enhances overall audio quality. Additionally, this preamplifier has a completely separated audio part and power part, minimizing interference for a cleaner sound experience.

The timbre produced by this amplifier is characterized by its softness, beauty, sweetness, warmth, powerful bass, and penetrating treble. It also offers treble and bass adjustment options to fine-tune the sound according to personal preferences.

This mini preamplifier boasts a compact size that makes it highly portable for on-the-go listening pleasure. Its single power supply further adds to its convenience factor. The high-quality aluminum alloy housing not only enhances durability but also provides excellent performance.

The Fosi Audio Phono Preamp with Vacuum Tube Amplifier is a versatile and high-quality audio device that is perfect for enhancing your turntable or phonograph experience. This preamp features a 5654W vacuum tube amplifier, which ensures superior sound quality and performance.

With its compact design and sleek appearance, it will seamlessly blend into any audio setup. One of the standout features of this preamp is its compatibility with MM turntables. It allows you to connect your turntable directly to the preamp and enjoy rich and detailed sound reproduction.

Additionally, it offers a 3. 5mm AUX input for connecting other audio devices such as smartphones or MP3 players, making it even more versatile. The Fosi Audio Phono Preamp also includes volume control and bass/treble control options, allowing you to customize the sound according to your preferences.

This feature ensures that you can fine-tune the audio output to suit your specific needs or listening environment. With its RCA line output, this preamp can easily connect to powered speakers or amplifiers in order to enhance your home audio system further.

The inclusion of a 3. 5mm headphone output also allows for private listening sessions without disturbing others. Overall, the Fosi Audio Phono Preamp with Vacuum Tube Amplifier is an excellent addition to any music lover's setup.

Its combination of high-quality components and versatile features make it a must-have for those seeking enhanced sound performance from their turntables or phonographs.

The Fosi Audio Bluetooth Tube Amplifier is a portable stereo power amp that delivers high-quality audio performance. With its compact design and powerful capabilities, this amplifier is perfect for those who appreciate HiFi sound and want a versatile audio solution.

Featuring the QCC3031 wireless Bluetooth 5. 0 core, this amplifier supports aptX technology and allows for seamless streaming from up to 39ft (12m) away. The Bluetooth and AUX selector ensures easy connectivity without any popping sounds when connecting to your devices.

With a power output of 50W RMS X 2, this amplifier can drive various passive speakers including outdoor, bookshelf, computer, desktop, ceiling, and floor standing speakers. One of the standout features of this tube amplifier is its use of 2 x 6J4 tubes which provide clear audio sound.

These tubes can also be replaced with other compatible options such as the 6K4 or GE5654 to further customize your listening experience. Additionally, it includes a headphone output for compatibility with headphones ranging from 16-64ohms.

The Fosi Audio Bluetooth Tube Amplifier boasts a small yet practical design that makes it suitable for desktops or smaller spaces in your home or office. It can easily connect to your audio system without the need for any software installation or settings adjustment.

Overall, the Fosi Audio Bluetooth Tube Amplifier offers outstanding versatility with its wireless connectivity options and ability to drive various types of passive speakers. Its tube technology ensures clear sound reproduction while its compact design makes it an ideal choice for those seeking HiFi sound in limited spaces.

The Douk Audio X1 160Wx2 Bluetooth Tube Amp for Turntables is a versatile and powerful amplifier designed to enhance your audio experience. With multiple audio input options, including Bluetooth 5. 0, stereo L/R RCA, MM Phono, and Turntables, this amp allows you to easily connect various devices and enjoy high-quality sound.

Featuring banana speaker jacks and low-frequency output for connecting an active subwoofer, this amplifier ensures that every detail of your music is reproduced with precision. The built-in Bluetooth chip supports APTX and APTX-HD codecs, ensuring a stable connection and superior audio quality when streaming wirelessly.

Equipped with the TDA7498E amp IC and NE5532 op amp, the Douk Audio X1 delivers a maximum output power of 160W+160W (4Ω load), providing ample power to drive your speakers effectively. With a frequency response range of 20Hz-20KHz (±3dB) and a signal-to-noise ratio greater than 90dB, this amplifier produces clear highs, rich mids, and deep lows.

The compact design of the Douk Audio X1 makes it suitable for desktop use or integration into any home entertainment setup. Its dimensions of 115*166*60mm (4. 53*6. 54*2. 36in) ensure easy placement without taking up too much space.

Overall, the Douk Audio X1 160Wx2 Bluetooth Tube Amp for Turntables is an impressive amplifier that offers versatility in connectivity options while delivering powerful sound reproduction. Whether you're enjoying vinyl records or streaming music wirelessly from your devices, this amplifier will enhance your listening experience with its exceptional performance.

The Nobsound MS-10D Tube Amplifier with Bluetooth and USB is a versatile audio power amplifier that combines the classic warmth of vacuum tube technology with modern connectivity options. With an output power of 25W+25W at 8Ohm, this amplifier is suitable for loudspeakers ranging from 25w to 100w, making it ideal for both small and medium-sized rooms.

The amplifier features two groups of RCA audio inputs, as well as Bluetooth and USB playback capabilities, allowing you to easily connect your devices and enjoy high-quality music. The MS-10D Tube Amplifier also boasts a sleek design with gold or black color options, making it a stylish addition to any home or retail space.

Its compact size (31. 2cm x 27cm x15cm) ensures easy placement in any room without taking up too much space. This amplifier is equipped with two types of tubes - the 6N1 and the 6P1 - which contribute to its rich sound quality, providing crystal clear audio reproduction across a wide frequency range (28Hz -20KHz).

The input sensitivity of 300mV ensures optimal performance even with low-level input signals. In addition to its impressive features, the Nobsound MS-10D Tube Amplifier supports various music formats through its USB connection, including WMA/WMV/MP3/APE/FLAC lossless music format playback.

It also supports Bluetooth connectivity for seamless streaming from smartphones, tablets, and other compatible devices. Overall, the Nobsound MS-10D Tube Amplifier offers a combination of vintage charm and modern convenience in one device.

Its powerful performance and versatile connectivity options make it an excellent choice for audiophiles looking to enhance their listening experience at home or in commercial settings such as coffee shops or retail stores.

The AC 12V 1A 6J1 Preamp Tube Amplifier Board DIY Kit is a value-packed preamp tube amplifier board that allows audio enthusiasts to create their own high-quality amplification system. This kit comes with all the necessary components and instructions, making it ideal for DIY projects.

Featuring an AC power supply of 12V and a current rating of 1A, this preamp tube amplifier board provides a stable and reliable power source for optimal performance. The inclusion of the 6J1 vacuum tubes ensures smooth and warm sound reproduction, adding depth and character to your audio.

The preamplifier functionality allows users to control the input signal level before it reaches the main amplifier, resulting in enhanced sound quality. With its headphone output, this kit also doubles as a headphone amplifier, allowing you to enjoy your music privately without compromising on audio fidelity.

Designed for DIY enthusiasts, this kit offers an opportunity for individuals to learn about electronics while creating their own custom audio setup. The comprehensive instructions guide users through each step of assembly, ensuring a smooth and hassle-free experience.

The NE5532 DC12V2A Bluetooth 4. 2 HIFI Preamp for Home Audio is a versatile and high-quality tube amplifier that offers an enhanced audio experience. This preamp features the NE5532 chip, which ensures clear and crisp sound reproduction while minimizing distortion.

With a built-in Bluetooth 4. 2 module, you can easily connect your devices wirelessly and stream your favorite music with ease. The 6J5 home audio tube amplifier adds warmth and depth to your sound, making it perfect for those who appreciate the rich tones of analog music.

The fever bile preamp tone board provides a balanced output, allowing you to enjoy a well-rounded audio experience with excellent clarity. Equipped with a 470UF/25V capacitor, this preamp ensures stable power supply and smooth operation for optimal performance.

The DC12V2A power input allows for easy compatibility with various power sources.