Fosi Audio P2 Headphone Mini Tube Headphone HiFi Stereo Low Ground Noise Output Port Supply Amplifier, Amplifier, Audio, Protection, 6.35mm (Power

【Superior Sound】With low ground noise, a built-in output protection circuit, and no buzzing or ringing noise, this headphone amplifier is designed specifically for customers who pursue audiophile-level, HiFi sound quality. The built-in protection circuit ensures the safety of even expensive and valuable headphones. 【Stereo Preamplifier】The P2 functions as both a headphone amplifier and a preamplifier. It has two input methods: RCA input and AUX input, and the product comes with a 6.35mm to 3.5mm adapter. 【High-Performance Headphone Amplifier】As a Hi-Fi vacuum tube headphone amplifier, the two vacuum tubes can easily power high-performance headphones such as HD580, HD600, HD650, K701, K702, and Q701. [Vacuum Tube Compatibility] The vacuum tubes in the P2 preamplifier can be replaced with 6J1 / 6J4 / GE5654 / 6AK5 / 6 * 1n / E180F / 6 * 9n / EF861 / 6688 vacuum tubes, etc. [Package Details] P2 headphone amplifier *1, 6J1 vacuum tubes *2, DC12V power supply *1, 6.35mm to 3.5mm adapter *1, user manual *1. *Note: The image shown is of a 5725W vacuum tube, but it has now been changed to a 6J1 vacuum tube. Specifications: Op-amp: NE 5532 Audio input: 3.5 mm audio jack, stereo L/R RCA Frequency range: 20 Hz - 20 kHz THD: ≤0.03% Matched headphone impedance: 32 - 600Ω NR: ≥ 95 dB Operating voltage: DC 12 V Input sensitivity: 0.2 MV Dimensions: L 99 * W 98 * H 33 mm Net weight: 0.25 kg