惯性聚合 高效追踪和阅读你感兴趣的博客、新闻、科技资讯
阅读原文 在惯性聚合中打开

推荐订阅源

The GitHub Blog
The GitHub Blog
阮一峰的网络日志
阮一峰的网络日志
钛媒体:引领未来商业与生活新知
钛媒体:引领未来商业与生活新知
Apple Machine Learning Research
Apple Machine Learning Research
小众软件
小众软件
博客园 - 司徒正美
Last Week in AI
Last Week in AI
爱范儿
爱范儿
罗磊的独立博客
奇客Solidot–传递最新科技情报
奇客Solidot–传递最新科技情报
freeCodeCamp Programming Tutorials: Python, JavaScript, Git & More
博客园_首页
OSCHINA 社区最新新闻
OSCHINA 社区最新新闻
The Cloudflare Blog
雷峰网
雷峰网
让小产品的独立变现更简单 - ezindie.com
让小产品的独立变现更简单 - ezindie.com
WordPress大学
WordPress大学
Jina AI
Jina AI
人人都是产品经理
人人都是产品经理
量子位
V
V2EX
博客园 - 叶小钗
宝玉的分享
宝玉的分享
T
Tailwind CSS Blog

Forbes - Consumer Tech

This Unhackable Quantum Navigation System Is The Size Of A Loaf Of Bread Apple At 50 — A Leadership Shift And An AR Future We Are Under-Investing In Robotics ... 90% Of Humanoid Robots Are Made In China Ditch The Apple White: Beats Expands Colorful Cable Line-Up With New 10-Foot Option Satechi’s New ChargeView 140W Desktop GaN Charger With Real-Time Display The Hasselblad In Your Pocket: Oppo’s Find X9 Ultra Challenges The Galaxy S26 Ultra There's No Such Thing As Brain Honey How AI Agents Could Rebuild Fashion’s Visual Production Layer QClaw Goes Global. The Agent Built Itself In 5 Days Apple’s Tim Cook Exit Hides A $4 Trillion Agentic AI Power Move EZQuest Reveals A New Line Of Pro Series USB-C Hubs For MacBook Neo Samsung Galaxy Z TriFold 2 Already In The Works, Report Claims Apple Revealed New Siri Release Date For iPhone, Latest Report Claims How Arcani’s HARK Is Designed For Modern Battlefield Acoustics The Newest Trend In Tech Embraces Femininity And Fun Samsung’s 75R95H Ushers In A New World Of LCD TVs New Apple iPhone Fold Design Pushes Smartphone Rivals To Go Wider And Taller iPhone 18 Pro Report: Four New Colors Leak As Apple Cancels Popular Shade Nothing’s Design-Led Strategy: Carl Pei Reveals The Tech Brand’s Philosophy iOS 26.5 Release Date: When To Expect Your iPhone Messaging Upgrade Google Pixel And Highsnobiety Build A Talent Pipeline For Fashion Android Circuit: Samsung Raises Galaxy Prices, Oppo Pad Mini Teased, Microsoft Closing Outlook App Apple Loop: iPhone Fold Launch Dates, iPad Air Upgrade, iPhone 18 Pro Specs Comcast $117.5 Million Breach Settlement — Are You Eligible? Amazfit Cheetah 2 Pro Takes Aim At The Garmin Audience Disney’s Launches ‘Infinity Vision’ Certification For Premium Theaters SoundPeats Reveals New Air6 HS Semi-Open Wireless Earbuds Amazon’s $11.57 Billion Leap Into Space: A Challenge To Starlink Meta Quest 3 Hit With $100 Price Increase Backblaze Stops Backing Up Dropbox And Others—Calls It An Improvement
Fosi’s MD3 MagDAC Unveiled At CanJam Singapore 2026
Mark Sparrow · 2026-05-17 · via Forbes - Consumer Tech
Fosi DM3 DAC

The Fosi MagDAC plugs into smartphones, laptops and tablets to give an instant upgrade to Hi-Fi sound quality.

FOSI

Over the past year or so, there’s been something of a resurgence in sales of wired headphones because. for some people, the novelty of expensive wireless earbuds might have worn off a little. A combination of limited battery life and the ease with which wireless earbuds can be lost is persuading some music lovers to turn back to using old-fashioned wired earphones and headphones.

There’s one small problem with using wired headphones. Hardly any smartphones made these days have an analog headphone jack. Fortunately, the solution is simple. Sales of portable headphone amplifier DACs which make it easy to use wired headphones, have soared.

These small devices plug into the USB port of a smartphone and provide high-quality amplification and digital-to-analog conversion to drive a pair of wired earphones or headphones. Prices of DACs start from $50 and they offer an instant sound upgrade for streaming music on a smartphone using services like Qobuz, TIDAL and Deezer.

The Fosi MD3 MagDAC has outputs for 3.5mm and 4.4mm connectors. It also has two USB-C ports so you can charge your phone while listening to music.

FOSI

The MD3 MagDAC

The latest headphone amp and DAC to be launched comes from Fosi. The MD3 MagDAC is being launched this weekend at CanJam Singapore. It’s an ultra-compact, magnetic headphone amp and DAC that weighs just 20g. The device clips magnetically to the rear of any MagSafe-compatible smartphone or case.

MORE FOR YOU

Built around the flagship ESS ES9039Q2M DAC chipset using a true balanced circuit architecture, the MD3 has four ES9603Q op-amps for clean headroom and extended dynamic range. The amplifier circuit is designed to drive a wide range of headphones and in-ear monitors, even the more difficult models.

Designed as a complete portable signal path rather than a basic adapter, the MD3 has dual USB-C ports for attaching to a smartphone and charging at the same time. The MagSafe-style magnetic back plate uses 16 N52 high-strength magnets keep it firmly attached to a phone so there’s no need for straps, elastic bands or Velcro strips. An aluminum alloy isolation plate separates the circuitry from the magnets to avoid any magnetic interference.

The new MD3 MagDAC from Fosi has a color display with a variety of screens.

FOSI

Customizable Color Screen

The MD3 also has a colorful 1.28-inch LCD displaying direct on-device controls. There are also physical buttons for controlling sound levels with a 100-step digital volume control with memory. You can also change settings so the MD3’s volume can be controlled by a smartphone. However, using the controls on the MD3 is probably the better option as it offers finer steps and more volume levels.

The MD3 features internal aluminum shielding for reducing the possibility of interference and the casing is precision CNC-machined for both performance and everyday usability. There is a Vista button on the MD3 that can be pressed to enter the device’s photo album. Users can upload their own images to personalize the device to suit their tastes.

When it comes to output choices, the MD3 has both single ended 3.5mm stereo jack and a balanced 4.4mm output for pairs of high-end IEMs and headphones. If you have a pair of headphones or earphones with a balanced cable, that’s probably the best choice but it’s a fine line as the single-ended or unbalanced 3.5mm output is clean and clear.

Pricing and Availability:

The Fosi MD3 MagDAC portable headphone amp and DAC is available from May 25, 2026, from Fosi and other outlets, priced at $149.99.

Tech Specs:

  • DAC/op-amp chipsets: DAC: ESS Sabre ES9039Q2M / ESS ES96030 x4
  • Input: USB-C (Top) audio decoding and image transfer, charging / USB-C (bottom) audio decoding, image transfer, firmware upgrade.
  • Output: 3.5mm single-ended / 4.4mm balanced.
  • USB Audio Class: UAC 2.0 / UAC 1.0.
  • Max sampling rate: UAC 2.0 PCM 32bit/384kHz, DSD256(Native) / UAC 1.0: PCM 16bit/48kHz.
  • Max output power (1kHz, THD+N <1%): 3.5mm: ≥80mW x 2 @ 320 / 4.4mm: ≥180mW x 2 @ 320.
  • Frequency response: 20Hz – 48kHz(+0.2dB).
  • SNR: 3.5mm: ≥115dB, 4.4mm: ≥116dB.
  • Dynamic range: 3.5mm: ≥115dB, 4.4mm: ≥116dB.
  • THD+N: 3.5mm: ≤0.00075%, 4.4mm: ≤0.00084%.
  • Noise floor: 3.5mm: <1.74V, 4.4mm: <2.7uV.
  • Headphone impedance: 16 – 3000Ω.
  • Weight(without cable): 50g.
  • Dimensions: 70 x 45 x 12mm / 2.76 x 1.77 x 0.47 inches.