Designed for efficient audio signal amplification with straightforward operation and reliable performance. Clear, strong gain: 10x amplification (20 dB) to boost signals for reliable listening and monitoring. Dedicated headphone drive: direct headphone output for listening comfort. The headphone port cannot be used with other outputs at the same time and supports headphones with impedance up to 16 ohms. Noiseconscious design: built around a classic Dual OP AMP NE5532, enhanced by frequency electrolytic capacitors and a noise reduction circuit to minimize background noise and deliver cleaner audio. Flexible input and output: Input options include RCA (L/R) and 3.5 mm; outputs include RCA (L/R), 3.5 mm, and a headphone jack, allowing easy connection to multiple devices or routes. Simple control: power with DC 9–19 V; static current about 8 mA. Volume is adjustable via a dedicated knob for precise level control. Compact and portable form: small footprint for easy placement. Dimensions: 87 mm (3.42 in) x 50 mm (1.96 in) x 37 mm (1.45 in). Key attributes Functionality: serves as a compact audio amplifier with both linelevel outputs and a dedicated headphone driver suitable for lowimpedance headphones. Compatibility: supports RCA and 3.5 mm inputs; outputs include RCA, 3.5 mm, and headphone jack; max headphone impedance 16 ohms. Power and control: DC power supply in the 9–19 V range; volume adjustable with a knob. Size and footprint: compact block suitable for desks, studios, or small setups. Applications and scenarios Desktop audio upgrade: connect a computer, laptop, or media player via RCA or 3.5 mm, and listen through lowimpedance headphones for clearer, louder playback without additional noise. Small home studio or monitoring: use with an audio interface or mixer to monitor mixes with precise headphone amplification and minimal background noise, improving sound clarity during editing or mixing. Compact desk or portable setups: powered from a standard DC supply within 9–19 V, enabling a tidy, spacesaving headphone amp and lineout solution for tight workspaces or temporary setups.