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【Voltage Compatibility】
When using electrical appliances, please note that they are designed for Japanese voltage specifications (90-110V), so if you use them with a different voltage, it may cause a malfunction.
【Plug Type】
Our products use Japanese plug types (A or B type).
Please use a conversion adapter if necessary.
【Important Note on Transformers and Adapters】
A transformer adjusts voltage to match your device’s requirements.
A conversion adapter only changes the plug shape and does not adjust voltage.
Using only a conversion adapter without a transformer may result in damage to the product.
【Liability】
We are not responsible for malfunctions or damages caused by improper use, such as operating the product without a transformer.
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All-in-One DAC/Amplifier: The Fosi Audio MC331 integrates a DAC, amplifier, preamp, and headphone amplifier. You can easily switch between audio sources using the remote control, ensuring a seamless and rich listening experience.
【Amazing Combination】As an integrated vacuum tube DAC amplifier with VU meter, the visual beauty of the 5725W vacuum tube and VU meter adds a warm and soft effect not only to the appearance but also to the sound, giving a retro feel to a modern look.
[Setup Flexibility] Supports Bluetooth, USB, coaxial, optical, and RCA inputs, making it compatible with a variety of sources, including computers, phones, CD players, and turntables with built-in phono preamps, allowing you to create a variety of systems.
Compact and Powerful: The MC331 takes up very little desktop space, yet boasts a maximum output of 105W x 2 @ 4Ω, effectively driving bookshelf speakers. Additionally, it features pre-outs and a 3.5mm headphone output for versatility.
User-Friendly Design: The MC331 comes with a remote control that lets you adjust bass and treble without sitting in your listening chair. The replaceable tube design lets you customize the sound signature to suit your personal preferences.
Note: ① When installing the tube, please use tweezers or other suitable tools to adjust the shape of the socket's pinhole to ensure proper connection with the tube pin. ② If the volume is too high or too low, this may be due to poor tube contact or oxidation of the tube pin. We suggest you try cleaning the tube pin and reinserting it.
If you experience noise, it could be a fault with your audio source, power supply, wiring or speakers. We recommend testing each (audio source/wires/speakers) to check for power interference, ensuring the tubes are securely attached and fully pre-heated for 10-15 minutes.
Fosi Audio MC331 Vacuum Tube Integrated Amplifier with DAC for HiFi Bookshelf Speakers and 3.5mm Headphones, 2-Channel Home Audio Stereo Power Amplifier with Bluetooth, USB, OPT, COAX, and RCA Inputs, and Vintage VU Meter Preamp
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