Fosi Audio MC331
Brand: Fosi Audio
₹18,400.00
The Fosi Audio MC331 is a compact all-in-one tube integrated amplifier combining DAC, stereo power amplification, preamplification and headphone amplification. Featuring 5654W vacuum tubes, a vintage VU meter, Bluetooth, USB, optical, coaxial and RCA inputs, it delivers up to 105W × 2 at 4Ω for bookshelf speakers while supporting headphones and pre-out connections.
MC331
Fosi Audio MC331
The Fosi Audio MC331 combines modern digital connectivity with the visual and sonic character of vacuum-tube amplification. Its integrated design functions as a DAC, stereo amplifier, preamplifier and headphone amplifier, supporting Bluetooth, USB, coaxial, optical and RCA sources. A pair of 5654W vacuum tubes and a vintage-style VU meter give the MC331 a distinctive retro-inspired appearance, while delivering up to 105W × 2 at 4Ω for passive bookshelf speakers. Pre-out and 3.5mm headphone outputs expand system flexibility, while remote-controlled bass and treble adjustment and replaceable tubes allow convenient operation and personal sound tuning.
MC331
Details & Specifications
Design & Amplifier Configuration
| Brand | Fosi Audio |
|---|---|
| Model | MC331 |
| Product Type | Tube Integrated Amplifier with DAC |
| Integrated Functions | DAC / Stereo Amplifier / Preamplifier / Headphone Amplifier |
| Vacuum Tubes | 5654W |
| Display | Vintage VU Meter |
| Replaceable Tubes | Yes |
Amplifier Performance
| Maximum Power Output | 105W × 2 @ 4Ω |
|---|---|
| Speaker Impedance | 4–8Ω |
| THD | ≤0.03% |
| Signal-to-Noise Ratio | ≥100dB |
Inputs
| Bluetooth Input | Supported |
|---|---|
| RCA Input | Supported |
| USB Input | Supported |
| Coaxial Input | Supported |
| Optical Input | Supported |
| Input Modes | Bluetooth / RCA / USB / Coaxial / Optical |
Outputs & System Integration
| Passive Speaker Output | Supported |
|---|---|
| Pre-Out | Supported |
| Headphone Output | 3.5mm |
| Compatible Speaker Type | Passive Bookshelf Speakers |
| Compatible Source Example | Turntables with Built-In Phono Preamplifier |
Controls & User Features
| Remote Control | Supported |
|---|---|
| Bass Adjustment | Supported |
| Treble Adjustment | Supported |
| Source Switching | Supported via Remote Control |
| Tube Replacement | Supported for Sound Customisation |
Dimensions & Power
| Dimensions | 10 × 2 × 2.7 in |
|---|---|
| Power Supply | 24V / 4.5A |
| Form Factor | Compact Desktop Integrated Amplifier |
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