This plug-and-play digital audio adapter is easy to set up, requiring no software or drivers. It features USB, optical, and coaxial S/PDIF inputs, compatible with most home audio systems, and RCA output for amplifiers or powered speakers. The built-in Hi-Fi headphone amp drives 16 to 200-ohm headphones, delivering 160mW RMS (32 ohms, 20 Hz - 20 kHz, 0.01% THD). With bass and treble control, it functions as a preamp or volume controller for PCs and Macs. This compact D/A converter streams 24bit/192KHz HD audio with low jitter, ensuring safety for your audio setup.
Key Features:
High-Performance Amplification: Equipped with a advanced TPA3255 chip, the SK01 delivers up to 255W per channel (at 4Ω) with exceptional clarity and minimal distortion, ensuring rich, dynamic sound across all frequencies.
Dual Connectivity Options: Seamlessly switch between Bluetooth 5.0 for wireless streaming (supporting AAC and SBC codecs) and RCA/RCA+L/R inputs for wired connections with turntables, TVs, CD players, and more.
Precision Tone Control: Adjust bass, treble, and volume with dedicated knobs for fine-tuned sound customization tailored to your preferences.
Sleek, Durable Design: Housed in a robust aluminum alloy casing with a vintage-inspired wood panel, the SK01 combines retro aesthetics with modern durability.
User-Friendly Interface: Intuitive controls and a blue backlit display provide clear visibility and ease of use, even in low-light environments.
Universal Compatibility: Works effortlessly with speakers ranging from 4Ω to 8Ω, making it ideal for bookshelf, floor-standing, or vintage passive speakers.
Technical Specifications:
Output Power: 255W x 2 (4Ω), 160W x 2 (6Ω), 120W x 2 (8Ω)
Bluetooth Version: 5.0 (compatible with AAC/SBC)
Signal-to-Noise Ratio (SNR): ≥98dB
Frequency Response: 20Hz–20kHz (±1dB)
Inputs: RCA (stereo), RCA+L/R (for dual-source switching)
Power Supply: 32V/5A (DC, power adapter included)
Dimensions: 7.5" x 5.9" x 2.4" (190mm x 150mm x 60mm)
Weight: 3.3 lbs (1.5 kg)
What’s Included:
FOSI Audio SK01 Amplifier
32V/5A Power Adapter
RCA Audio Cable
User Manual
Ideal for audiophiles and casual listeners alike, the FOSI Audio SK01 bridges the gap between vintage warmth and modern technology. Upgrade your sound today—wherever music lives.
Fosi Audio MC351 2.1 Channel Integrated Amplifier
Feature:
All-in-One DAC Amplifier
High Power with Great Sound
5 input modes: Bass and Treble Controls
Mini VU Meter: Classic Retro Vibe
Fosi Audio TB10D is an analog input(RCA) Class-D audio amplifier that easy to install to build your home audio sound system. MAX Power Output up to 600Watts. TB10D adopts TI TPA3255 high-performance Class-D power amplifier chip enabling true premium sound quality.
Fosi Audio BT30D Bluetooth 2.1 CH Power Amplifier.
Elevate your audio experience with the Fosi Audio BT30D! This 2.1 - channel Bluetooth 5.0 amplifier features advanced TPA3116D2 chips for a powerful 50W×2 + 100W output. It offers stable, long - range wireless connection, clear sound, and has SUB volume/frequency controls. Compact yet mighty, it's perfect for home or outdoor setups.
The V3 Mono can serve as a power amplifier for multi-channel AVRs, complementing the output power to easily drive high-power speakers in home theater systems.
Fosi Audio BT20A Pro Bluetooth Stereo Power Amp
Feature:
The Best Bluetooth Audio Receivers of 2025
Bass & Treble Control with Midpoint Positioning
Op-Amp Rolling: SS3602, MUSES02, OPA2604AP, OPA2134PA
Replaceable Knobs: ORANGE KNOB, GREY KNOB
The MC331 is a 2.0 channel integrated amplifier with vacuum tubes and built-in DAC. It supports five input modes—Bluetooth, USB, Optical, Coaxial, and RCA—making it compatible with a wide range of audio source devices.
Delivering clean digital to analog conversion without coloring the sound. Vocals are more distinct, revealing finer details. Bass is tighter and more tuneful without overpowering, while highs gain airiness and precision for a well-balanced, immersive listening experience.
The Fosi Audio BT20A is a compact yet powerful stereo amplifier. With Bluetooth 5.0, it offers a stable 33 ft connection and low signal delay. Boasting 100W x 2 output at 4 ohms, it can drive various passive speakers. Its advanced circuitry includes speaker protection. Ideal for home use with bookshelf or desktop speakers, it comes with a 24 - month warranty.
High-Performance Digital-to-Analog Audio ConverterThe ZD3 is a audiophile-grade balanced stereo DAC meticulously developed by Fosi Audio after thoroughly understanding user needs. It features the ES9039Q2M high-precision DAC chip, delivering rich and superior sound
The K7 is an all-in-one HiFi DAC and headphone amplifier, developed based on in-depth interviews with hundreds of headphone HiFi and gaming enthusiasts. It supports mainstream digital inputs including USB, optical, and coaxial, and features aptX HD/LL for high-quality Bluetooth audio streaming.
Fosi Audio – доступный Hi-Fi, ставший реальностью Fosi Audio производит высококачественные компактные компоненты для домашней аудиотехники, включая мини-усилители мощности, ЦАП/усилители для наушников и усилители с поддержкой Bluetooth , которые обеспечивают звук аудиофильского уровня по доступным ценам. Благодаря инновационному дизайну , сотрудничеству с пользователями и собственному производству , Fosi выделяется исключительной ценностью, компактными форм-факторами и впечатляющими отзывами экспертов и пользователей.