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SOUND QUALITY: The Pre-1 assists in experiencing a true home theater surround sound. It allows the ear to hear every detail for an enhanced audio environment.
SIGNAL: A preamp is an important element for music recording to boost the low-level output on microphones. It provides a better recording signal compared to standard equipment.
POWER: A low frequency filter gives a response of 5Hz-30kHz +0 -3dB in order to have the ultimate powered preamp for a home recording or stereo system.
DESIGN: OSD Audio’s Pre-1 is a unique preamplifier that accomplishes the subtle audio tasks that takes an ordinary audio source management to the next level.
CONTROLS: The front panel has adjustable mic level control, input selector, microphone jack output, and mute option. It controls the bass for midrange, treble, loudness and balance control.
Unprecedented Surpass in Functions & Looking: The phono preamp has advanced design and high-end components to build low-noise integrated circuit and ensure clean sound. Solid aluminum knobs, unique shell made of aluminum with whole die-casting molding and CNC machined, all styles of desktop space can be decorated perfectly with A1's warm orange or cool green lights.
Unprecedented Surpass in Functions & Looking: Advanced design and high-end components to build low-noise integrated circuit and ensure clean sound. Solid aluminum knobs, unique shell made of aluminum with whole die-casting molding and CNC machined, all styles of desktop space can be decorated perfectly with A1's warm orange or cool green lights.
Retro Tube Sound & Tone Control: With classic JAN GE5654 vacuum tubes, phono tube preamp reveals warm and fine sound, highlights great musicality and improves everything associated with music such as detail, transparency, immediacy, richness, dynamic etc. Except the delicate and smooth sound, can be enjoyed via rotating treble/bass knobs or change other tubes according to one's preference.
Phono Stage / Audio Pre-Amplifier / Headphone Amp: Ampapa A1, designed to amplify the low audio signal from your MM turntables, Phonograph, MP3, MP4, phone, tablet, PC, CD player, lossles music player etc. Phono Preamp is easier to drive amplifiers, active speakers and most headphones such as HD650 / K701 / DT770 / ATH-M50X / T1 / T90 / SR325 / RS1e etc.
Advanced & Considerate Design Concept: Tube phono preamp is the first product carefully designed by our senior audio experts in Washington after lots of researches, who are always devoted to exploring the design and craft innovation of HiFi and providing extreme listening experience for audiophiles via tube preamplifier for turntable.
Tube Preamplifier: With a 3.5mm AUX input, it's also a tube preamp. Fosi Audio used high-quality component parts for the design and assemblage of this phono preamplifier. You can enjoy a very warm and smooth sound
Tube MM Phono Preamplifier: This Fosi Audio phono preamplifier removes low-frequency noise and ensures clear sound quality by converting phono signals to line-level signals using high-quality components and low-noise integrated circuits. It is designed to safeguard your turntable thanks to its grounding post
Package Content: You will get 1 x Box X2 phono preamp, 2 x vacuum tubes, 1 x RCA cable, 1 x power adaptor, and 1 x user manual
Applicable Vacuum Tube Model: The compatible vacuum tube models are 6K4, 6J1, 6J4, GE5654, 6AK5, 66, etc. To make changes to your stereo system yourself, simply swap out the vacuum tubes. Consider that distinct tubes produce various sounds
3 Switchable Gain Modes: You can switch between 3 modes: 39, 42, or 45 dB. High compatibility and customizable control are provided by the adjustable gain levels. Also, it has very good circuitry and entry-level, high-end analog sound
VIVID STEREO SOUNDSTAGE - Utilizing individual left and right channel OP amps provide optimal channel separation and virtually no crosstalk during signal reproduction and amplification stages
UNCOMPROMISED PHONO AMPLIFICATION AND EQUALIZATION - Precisely converts the turntable phono signal to line level, featuring an ultra high-accuracy frequency response to faithfully reproduce the original recording to the RIAA standard
SOPHISTICATED CIRCUIT DESIGN ENGINEERED WITH PREMIUM COMPONENTS - High accuracy components, low noise power supply, and low impedance output stage achieve greater RIAA specification, gain performance and lower distortion
PROTECTED FROM ANY ELECTRONIC INTERFERENCE - Internal metal shielding enclosure to block electro-magnetic interference and electronic noise
LOW FREQUENCY RUMBLE FILTERING - This selectable high pass filter rolls off the low end frequencies below 20Hz. This slow gentle roll off is helpful to reduce subsonic resonant feedback and noise when listening at loud volumes
What You Get: BOX X4 phono preamp, DC 12V power supply, user manual
Tube Headphone Amplifier & Preamplifier: The BOX X4 is designed with a 3.5MM AUX headphone and RCA output, highly useful beyond imagination
The upgraded version of Fosi Audio BOX X2. NEW-generation phono preamp for unrivaled sound quality
JAN 5654W Tube MM Phono Preamplifier: The BOX X4 phono preamp supports 3.5MM AUX and MM turntable input, converting phono signals to Line Level signals with low-noise integrated circuits and high-quality components to remove low-frequency noise ensure clear sound quality. Designed with a grounding post to protect your turntable
Applicable Vacuum Tube Model: 6K4/6J1/6J4/GE5654/6AK5/66*In vacuum tubes, etc. You can replace the vacuum tubes to DIY your stereo system. Different tubes with different sounds
OSD Audio Preamp-1 Professional Preamplifier Phono Ready, Home Theater, Surround Sound, Recording