Dynamic Range and Sampling Rate Indicator:Boasts a dynamic range of 132dB and a sampling rate indicator for PCM and DSD sources Versatile Output Ports:Features both 3.5mm and 4.4mm output ports, supporting various portable headphones with robust performance Efficient Circuit Design:Low heat, low power consumption design ensures reliability for extended use Dual CS43131 Chips:Equipped with dual CS43131 chips for balanced four-channel decoding, ensuring pure audio with high fidelity Model: V1 /Amp Chip: CS43131 x 2 Frequency Response: 5-82KHz (±1dB) Headphone Interface: 3.5mm single-ended, 4.4mm balanced SNR: 132dB (A-weighted) Dynamic Range: 4.4mm: 132dB (A-weighted) Output Level: 4.4mm: 4Vrms, 3.5mm: 2Vrms Sampling Rate Indicator: PCM (Green), DSD (Red) Dimensions: 57mm x 27.25mm x 11.43mm (The product appearance and printed words depending on the batch, but this does not affect use) Specification: IOS Color: As shown Material: ABS Package Contents: 1 * Headphone Amplifier Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.