Certified Quality and Safety: The JM6 Pro 2 meets high safety and performance standards. Advanced Audio Technology: Equipped with the CX31993 DAC, this amplifier delivers clear, detailed sound. Designed for headphones with impedance under 32 Ohms. Robust and Durable Design: Constructed from high-quality aluminum alloy with 5-axis CNC curved surface engraving. Compact size (110 mm width) for portability and easy integration. Versatile Connectivity: Features LINE IN and LINE OUT for flexible connections to phones, computers, and other audio sources. No Battery Required: Powered via USB—no internal battery, no charging needed. Product Specifications Product Name: JM6PRO 2 Portable HiFi Headphone Amplifier DAC Chip: CX31993 Op-amp Chip: MAX97220 Maximum PCM Sampling Rate: Up to 32-bit/384 kHz Signal-to-Noise Ratio: ≈107 dB (A-weighted) Noise Floor: 3.5 μV (single-ended), ~5.7 μV (A-weighted) Dynamic Range: ≈104 dB (32 Ω) Crosstalk Suppression: ≈−71 dB (32 Ω) Distortion: ≈0.0030% (32 Ω) Output Power: ≈70 mW (32 Ω, THD+N < 1%) Output Impedance: ≈0.20 Ω Color: Silver Cable: 448-core, 8-strand silver-copper hybrid braid Housing: Aluminum alloy Instructions for Use: Plug and play. Compatible with gaming, music playback, live streaming, calls, wired controls, and recording. Length: 110 ± 10 mm Net Weight: 7.6 g ± 1 g Gross Weight: 45 g ± 5 g Material: Aluminum Alloy Package Includes: JM6 Pro 2 amplifier, USB-C cable, user manual