Fosi Audio MC331
- 2 reviews
- Fosi Audio
Description
1. Professional Power with a Vintage Pulse
The Fosi Audio MC331 is a high-performance 2.1-channel Bluetooth power amplifier that blends the golden age of analog audio with modern Class D efficiency. Featuring a signature warm-lit VU meter, this amplifier is designed to drive massive floor-standing speakers or desktop monitors while providing dedicated control for your subwoofer.
2. Key Features & Audiophile Innovation
Authoritative TPA3255 Performance
-
Massive Power Output: Driven by the flagship Texas Instruments TPA3255 chip, the MC331 delivers up to 100W x2 (@4Ω) for main channels and a robust 200W dedicated to a passive subwoofer.
-
Pure Sonic Clarity: With a high SNR (≥100dB) and ultra-low distortion, it ensures that your music remains transparent and dynamic, even at high volume levels.
Classic VU Meter & Aesthetic Build
-
Visual Soundscapes: The center-mounted VU meter provides a rhythmic visual representation of your music's signal, adding a glowing, nostalgic ambiance to your listening room or office.
-
All-Aluminum Craftsmanship: The CNC-machined chassis not only offers a premium look but also serves as an effective heatsink for the internal high-power circuitry.
Precision 2.1 Channel Management
-
Independent Subwoofer Controls: Perfect your low-end with dedicated knobs for Subwoofer Volume and Sub Frequency (60Hz-150Hz). This allows for a seamless crossover between your bookshelf speakers and your sub.
-
Bluetooth 5.0 Wireless Freedom: Stream high-quality audio from your smartphone or tablet with a stable, long-range connection of up to 50ft (15m).
3. Technical Specifications
| Component | Specification |
| Amplifier Chip | Texas Instruments TPA3255 |
| Max Power Output | 100W x2 (Stereo) + 200W (Subwoofer) @4Ω |
| Bluetooth Version | Bluetooth 5.0 |
| Input Mode | Bluetooth, RCA |
| Output Mode | Passive Speakers, Passive Subwoofer, Active Sub Out |
| Sub Frequency Range | 60Hz - 150Hz |
| THD / SNR | ≤ 0.03% / ≥ 100dB |
4. Why the MC331 is the Ultimate 2.1 Hub
The Fosi Audio MC331 is the perfect solution for audiophiles who want "Big Speaker" sound in a desktop-sized footprint. It solves the common problem of weak bass by providing a dedicated high-power channel for a subwoofer. Whether you are building a high-end gaming station or a living room Hi-Fi setup, the MC331 offers a tactile, visual, and acoustic experience that traditional amps can't match.
Specifications
- Weight: 200gr
- Usage: Indoor & outdoor
Pros and cons
- Sustainably produced
- Ideal for everyday use
Mini Nostalgic Aesthetics
- - Fosi Audio MC331 Hybrid Tube Integrated Amp
- - Compact size, tube warmth, and remote control: A perfect combination for convenient and cozy audio enjoyment.
All-in-OneDAC
Amp/Headphone Amp
The MC331 supports one analog and four digital input modes, ensuring compatibility with a broad range of audio sources. It also boasts a pre-out port, facilitating easy setup of a 2.1 system. The VU meter and vacuum tubes add a touch of retro flair, delighting audio enthusiasts with both visual and auditory pleasure.
- Input: RCA, Bluetooth, USB, Optical, Coaxial
- Output: Passive Speakers Output, Pre-Out, 3.5mm Headphone
- OutputSNR≥100dB; THD≤0.03%; Bluetooth Codecs: SBC, AAC
Hybrid Tube Integrated Amplifier
With a built-in DAC and versatile connectivity, MC331 offers rich, immersive sound.
Maximize Space Efficiency
Fits into your audio system effortlessly, offering high-quality audio with minimal space.
Catering to Most Audio Sources
Connect multiple audio sources simultaneously and switch inputs seamlessly.
Pointer Dances to the Music
Displays audio signal strength in real time to adjust volume and prevent overload.
JAN 5725W Vacuum Tubes
Compatible tubes: 5654W, 6AK5, 6AK5W, 6Zh1P, 6J1,
6J1P, WE-403A, 403B, EF95, and other 7-pin tubes.
Bass and Treble Control
Customize Your Unique Sound
With central detents to easily restore the natural sound.
Easy to Set up and Intuitive to Operate
Allows for adjusting bass and treble from the comfort of your listening chair.
Memory Function
Setting automatically restore to previous upon restart,
eliminating repetitive adjustments.
CNC Integrated Design
All-metal casing, finely sandblasted, featuring
a minimalist and durable design.
Friendly Solutions Guide
1. Check Connections & Device Compatibility: --Ensure all audio cables are fully inserted and undamaged. Replace any frayed cables with high-quality shielded ones (recommended: cables with metal connectors).-- Confirm your speakers' power rating (e.g., 50W/100W) and impedance (e.g., 4Ω/8Ω) match the amplifier's requirements (see product manual). If your speakers have an impedance outside the 4-8Ω range, they may not work optimally with the MC331. -- Avoid raising the volume beyond your speakers' labeled maximum (e.g., “Max 80%") to prevent distortion.
2. Optimize Setup & Audio Sources: -- Speaker Placement: Use high-resolution speakers placed at least 30cm away from walls or corners. Add rugs or curtains to reduce echoes. -- Audio Quality: Play lossless music formats (e.g., FLAC, WAV) on dedicated devices (e.g., music players or updated phones/computers). -- Bluetooth Compatibility: Ensure your device supports SBC and AAC Bluetooth formats. Keep the Bluetooth device within 10 meters of the amplifier and minimize obstacles.
3. Reduce Environmental Interference: -- Anti-Interference Cables: Use shielded RCA cables with grounding (metal-shell connectors) to minimize buzzing. -- Distance from Interference: Keep audio/Bluetooth cables ≥30cm away from routers, power outlets, or microwaves. -- Troubleshoot Sources: Test the same song on another phone/computer. If the noise persists, contact support for assistance.
Quick Tips:
- Using a Turntable? Ensure it has a built-in phono preamp or connect an external one (required for proper volume).
- Bluetooth Stability: Check if the antenna is securely installed and keep it away from other wireless devices (e.g., Wi-Fi routers).
- Power Supply: Ensure you are using the correct power supply (24V 4.5A for 69W output; 24V 8.5A for maximum 105W output).
- Warm-Up Time: Allow the vacuum tubes to warm up for 10-15 minutes after powering on to ensure stable performance.
Productdetails
Description
All-in-One DAC Amp:A DAC, amplifier, preamplifier, and headphone amplifier are all integrated into the Fosi Audio MC331. You can easily switch between audio sources with the help of the remote control, ensuring a seamless and enriched listening experience.
Amazing Combination: As an integrated tube DAC amp with a VU meter, the visual aesthetics of the 5654W vacuum tubes and VU meter add a nice warm and soft effect to not only the appearance but the sound as well, giving the modern look a retro feel.
Setup Flexibility:It supports Bluetooth, USB, coaxial, optical, and RCA inputs, making it compatible with a variety of sources such as computers, phones, CD players, turntables with built-in phono preamps, etc., allowing you to build various systems.
Compact Yet Powerful:The MC331 only takes up minimal desktop space but boasts a maximum power output of 105W x2@4Ω, effectively driving your bookshelf speakers. Additionally, it has a pre-out and a 3.5mm headphone output, making it versatile enough.
User-Friendly Design: The MC331 comes with a remote control, allowing you to adjust bass and treble from the comfort of your listening chair. Its replaceable tube design lets you customize the sound signature to suit your personal preferences.
Specifications
- MAX Power Output:
105W×2@4Ω - Input Mode: Bluetooth +RCA +USB +COA+OPT
- Output Mode: Passive Speakers Output, Pre-Out, 3.5mm Headphone Output
- THD: ≤0.03%
- SNR: ≥100dB
- Device Dimension: 10 x 2 x 2.7 inches
- Terminating Impedance: 4-8 Ohm
- Power Supply: 24V/4.5A
What‘s in the box？
- MC331 Power Amplifier x 1
- 24V/4.5A Power Adapter x 1
- User’s Manual x 1
