[Android/iOS/Windows/Mac Universal]Transform USB-C ports into premium audio hubs with this keychain-sized adapter. Links Android/iOS phones (iPhone 15+ native; iPhone 14/older via OTG cable(Not Included)), Windows/Mac PCs, tablets, Nintendo Switch, and Type-C devices to wired headphones/speakers. Studio-grade decoding ensures 32bit/768kHz clarity—outshines built-in jacks with crisp vocals, deep bass, zero distortion for music/gaming/console audio. Fits on keychains to upgrade sound anywhere.<br>[2025 Upgraded Version]This new-generation USB-C portable headphone DAC and amplifier supports up to DSD256 and PCM 32-bit/768 kHz decoding, delivering high-resolution sound reproduction. With a powerful drive of up to 60mW@16Ω/55mW@32Ω, it effortlessly powers both high- and low-impedance headphones via 3.5mm single-ended balanced connections, immersing you in an exquisite musical experience.<br>[Plug-and-Play and Portable] Enjoy high-quality music without a complex setup. Simply connect the device to an audio source. It’s plug-and-play. At just 14 grams, its sleek, compact design ensures exceptional portability and convenience. You will receive the headphone amplifier and DH01 adapter. Note: Does not support answering incoming calls.<br>[Flagship Chip] The portable headphone amplifier is equipped with Cirrus Logic's CS43198 and CT7601 DAC chips, which deliver exceptional system-level audio performance without draining mobile devices' batteries. With an ultra-low noise floor of 1μV, total harmonic distortion (THD) of 0.0001%, a signal-to-noise ratio (SNR) of up to 132dB, and an ultra-wide adaptive impedance range of 16-600Ω, you can enjoy pure, crystal-clear sound quality.<br>[5 Filter Modes & High/Low Gain Switching] Headphone Amplifier has 3 output levels (0.5V/1V/2V) and 5 filter modes + high/low gain,adapt to all headphones/IEMs/line-outs. Mode 1 (Default)：Fast roll-off, low-latency;Modes 2-5：Fast/slow roll-off (phase-compensated/low-latency), non-oversampling,tailor soundstage depth and transient response for studio/music immersion.Note：UAC 1.0 Mode：Activate by holding power button during startup (cannot switch mid-use).