Product information

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 Overview Dual JAN6418 tubes, full-balanced circuit, triple shock absorption, hollow window design, and 460/480mW strong output powe Military-Grade Dual JAN6418 Tubes Equipped with two military JAN6418 vacuum tubes.Delivers warm, rich vocal texture with full, immersive sound field for vocal and pop music Ultra-Low Noise Floor ≤ -115dB Extremely low noise floor eliminates tube hiss and hum. Enjoy pure black background sound without any distracting circuit noise during playback. Low Constant Temperature Tube System Long 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 overheating Dual High-Power Output Ports 3.5mm single-ended (460mW) + 4.4mm balanced (480mW) output @32Ω. Effortlessly drive sensitive IEMs, planar and high-impedance over-ear headphone Triple Anti-Vibration Technology 3-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 Frame Floating open-frame architecture passes strict drop, shock and vibration tests. Built-in triple anti-vibration system, portable and durable for outdoor travel use Ultra-Light 55g Portable Body Only 55g ultra-light compact metal chassis. Easy to carry for commute, travel, coffee shop and home long-hour listening Wide Cross-Device Compatibility Plug-and-play support for iPhone, Android phones, laptops and desktops. Works flawlessly with all IEMs and over-ear headphones for mobile & desktop Hi-Fi listening