【Important Notice for International Buyers – Tomoayax Premium Audio Hi-Fi Japan】
■ Voltage Compatibility
This product is designed exclusively for use in Japan (AC 100V, 50/60Hz).
Many regions use 120V or 220–240V.
Using this product without a proper transformer in such voltage environments may result in malfunction, overheating, or serious and irreversible damage.
■ Plug Type
This product uses a Japanese plug (Type A or B).
A plug adapter may be required depending on your region.
■ Transformer Requirement (Very Important)
A transformer is required for safe use.
A plug adapter only changes the plug shape and DOES NOT convert voltage.
Using this product without a transformer may cause serious and irreversible damage.
■ Buyer Responsibility
As this is high-end audio equipment, the buyer is fully responsible for confirming compatibility with their local voltage (100V / 120V / 220–240V) and usage environment before purchase.
■ No Return / No Refund Policy
We do NOT accept returns or refunds for:
・Voltage mismatch (including 120V and 220–240V environments)
・Use without a transformer
・Plug incompatibility
・Damage caused by improper setup or usage
■ Liability
We are not responsible for any damage, malfunction, or performance issues caused by improper use or incorrect voltage conditions.
■ Final Notice
Please ensure full understanding of the above before purchasing.
Use only under the correct voltage environment.
【All-in-One DAC Amplifier】The Fosi Audio MC331 integrates a DAC, amplifier, preamplifier, and headphone amplifier all in one unit. The remote control allows for easy switching between audio sources, ensuring a seamless and rich listening experience.
[A Wonderful Combination] As an integrated vacuum tube DAC amplifier equipped with a VU meter, the visual beauty of the 6J1 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 its modern look. *Note: The image shown is of a 5725W vacuum tube, but it has now been changed to a 6J1 vacuum tube.
[Setup Flexibility] Supporting Bluetooth, USB, coaxial, optical, and RCA inputs, it is compatible with a variety of sources such as computers, phones, CD players, and turntables with built-in phono preamps, allowing you to build various systems.
【Compact and Powerful】The MC331 takes up very little desktop space, yet boasts a maximum output of 105W x2@4Ω, effectively driving bookshelf speakers. Furthermore, it features pre-outs and a 3.5mm headphone output, making it versatile for various uses.
【User-Friendly Design】The MC331 comes with a remote control, allowing you to adjust the bass and treble while seated in your listening chair. The interchangeable tube design allows you to customize the sound signature to your personal preferences.
Please note: ① When installing vacuum tubes, use appropriate tools such as tweezers to adjust the shape of the pinholes in the sockets to ensure proper connection with the vacuum tube pins. ② If the volume is too high or too low, it may be due to poor contact in the tube or oxidation of the tube pins. We recommend trying to clean the tube pins and reinserting them. ③ When the power is on, the vacuum tubes will always be lit.
If noise occurs, the problem could be with the sound source, power supply, wiring, or speaker. We recommend testing each component (sound source/wires/speaker), checking for power supply interference, ensuring the tubing is securely installed, and allowing it to fully preheat for 10-15 minutes.
Fosi Audio MC331 Vacuum Tube Integrated Amplifier with DAC, HiFi Bookshelf Speaker/3.5mm Headphone, 2-Channel Home Audio Stereo Power Amplifier, Bluetooth/USB/OPT/COAX/RCA Input, Vintage VU Meter Preamplifier
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