Douk Audio Ampapa A1 Vacuum Tube Phono Preamp Headphone Amp Hi-Fi Audiophile Preamplifier for MM Turntable Record Player with Tone Control for Home Stereo Desktop Computer Receiver

IntroductionA1 tube preamp / phono preamp / headphone amp is the first product carefully designed by Ampapa, with high-end configuration, powerful functions and amazing looking. Ampapa, always devoted to exploring the design innovation of HiFi and amplifying all passion for music.FeaturesAmpapa A1, more than one simple preamp:MM input, converts phono signal to line level signal, with low-noise integrated circuits and high-quality components to ensure clear and clean sound.Stereo RCA input, amplifies the low level audio signal from your phone, tablet, PC, MP3 etc., easier to drive amplifiers or active speakers and greatly improve the sound quality.JAN5654 tubes and HiFi vintage analog sound: reveal a sound that is both warm and fine, highlight great musicality, and improve everything associated with music such as detail, transparency, immediacy, richness, dynamic, tone etc.. Ceramic silver-plated pluggable tube socket for tube rolling and sound-shaping, easy to replace according to one's preference.Tone Control and 3.5mm headphone output: get more delicate and smooth sound by adjusting treble / bass knob, presenting music with rousing highs and deep lows and rejuvenating your audio system. Reasonable and advanced architecture, adds classic headphone amp circuit (2NE5532), easily to drive 16-300 ohm headphones. Excellent performance and amazing design: all details full of texture, provide different acoustic enjoyment with large dynamic and sweet tube sound even in limited space. Using high-quality components, solid aluminum alloy knobs, unique appearance modeling decorates with warm orange / cool green lights etc., all is for the best listening experience. Warm tips:1. A1 is designed with pluggable tube socket, compatible with 6J1, 6K4, 6J5, GE5654W, 61N, 62N, 6J5, 6A2, etc., can be replaced directly. 2. Stereo RCA output and 3.5mm headphone output can work at the same time, and the volume / treble / bass of two outputs are controlled simultaneously. ParametersAudio input: Phono MM / Stereo RCAAudio output: Stereo RCA / 3.5mm Headphone JackInput level: 0.775V RMS (RCA); 0.005V RMS (Phono)Frequency response: 20Hz-20KHz (±0.5dB) (RCA); Ref to RIAA +/-2dB (Phono)Headphone output power:125mW (32Ω)/62.5mW(64Ω)/30mW(128Ω)Headphone impedance range: 16-300ΩTHD: ≤0.1%Output level: 1.5V RMS (RCA); 0.6V RMS (Phono)S/N ratio: ≥106dB (RCA); ≥80dB(Phono)Working voltage: DC 12V(≥1.5A)Net weight: 384g / 0.85lbPackage weight: 900g / 1.98lbDimensions(WDH): 1539225mm /6.023.620.98inPackage dimensions (WDH): 26014578mm / 10.245.713.07inPacking List1A1 Preamp25654 Vacuum Tube1DC 12V Power Adapter1RCA Cable1Wiping Cloth