MUSEHiFi M3 Ultra JAN6418 Vacuum Tube Portable USB-C DAC & AMP TypeC Decoding Headphone Amplifier

Frequently Asked Questions Q: The vacuum tubes of M3U are exposed. Will this affect durability or drop resistance? A: The M3 Ultra adopts an open hollow-out frame structure with reinforced fasteners, and the core vacuum tube area is equipped with buffer protection design.It has passed multiple rigorous tests as below: Multi-angle free fall test Drop impact test from desktop height Structural anti-shock & continuous vibration test Conclusion: It features stable and robust structural strength under daily usage scenarios, capable of withstanding regular portable use and accidental drops. Q: Will there be noise when using M3 Ultra portably?A: M3 Ultra is equipped with a triple noise reduction solution: Circuit shock resistance: Suppress up to 98% of circuit vibration noise Algorithmic processing: Transient noise suppression efficiency reaches 96% Physical structural shock absorption: Reduce microphonics by over 90% during portable use No hum or noise will be generated from the vacuum tubes under daily listening scenarios for comfortable audio experience. Core Hardware OverviewDual JAN6418 tubes, full-balanced circuit, triple shock absorption, hollow window design, and 460/480mW strong output poweMilitary-Grade Dual JAN6418 TubesEquipped with two military JAN6418 vacuum tubes.Delivers warm, rich vocal texture with full, immersive sound field for vocal and pop musicUltra-Low Noise Floor ≤ -115dBExtremely low noise floor eliminates tube hiss and hum. Enjoy pure black background sound without any distracting circuit noise during playback.Low Constant Temperature Tube SystemLong play temperature stable at only 33°C, much cooler than traditional tube gear (45-60°C). Low-power tube design ensures consistent warm tone without overheatingDual High-Power Output Ports3.5mm single-ended (460mW) + 4.4mm balanced (480mW) output @32Ω. Effortlessly drive sensitive IEMs, planar and high-impedance over-ear headphoneTriple Anti-Vibration Technology3-layer anti-vibration design (circuit + algorithm + physical silicone damping). Effectively suppress tube microphonic vibration to maintain clean pure tube tone anywhere.Drop & Vibration Resistant Floating FrameFloating open-frame architecture passes strict drop, shock and vibration tests. Built-in triple anti-vibration system, portable and durable for outdoor travel useUltra-Light 55g Portable BodyOnly 55g ultra-light compact metal chassis. Easy to carry for commute, travel, coffee shop and home long-hour listeningWide Cross-Device CompatibilityPlug-and-play support for iPhone, Android phones, laptops and desktops. Works flawlessly with all IEMs and over-ear headphones for mobile & desktop Hi-Fi listeningElectrified : NoHigh-concerned chemical : noneUSB Compatibility : Android,iOS,Windows 10Bluetooth : NoWIFI : NoD/A Converter : ES9028Q2MModel Number : M3 UltraMaterial : MetalDSD Sampling Frequencies : 11.2896 MHz (DSD256)PCM Word Length : 32-bitPCM Sampling Frequencies : 384 kHzOutputs : 3.5 mm,Balanced OutInputs : USB Type-CType : PortableBrand Name : MUSEHiFiOrigin : Mainland China