Refer Hetian Mau's Preamp Circuit ，the sound is very good ！. Finished Hetian Mau's Preamp Circuit Preamplifier x 1. 4 way audio input + 1 way audio output. The input and output impedance is constant, the step is 0.5db, and the total attenuation is 63.5dB.
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1 Digital Preamp. Input impedance: 50KΩ. Distortion: <0.003%@1KHZ.
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The HiFi Magic 6E2 Tube Phono Preamp by Douk Audio is a high-quality audio preamp designed for turntable stereo systems. With both headphone jack and stereo RCA outputs, this black preamp unit is perfect for enhancing your home audio experience. The analog inputs and outputs, along with its compact design, make it a versatile choice for audiophiles looking to upgrade their sound system. Enjoy crystal-clear sound quality with this sleek and powerful Hi-Fi amplifier.
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MM/MC phono preamp: Converts phono signal to line level signal, low-noise integrated circuits and high-quality components are designed to ensure clear sound; with a MM/MC switch on the bottom, easy to select to match different kind of turntables. LINE and 3.5mm headphone outputs: With stereo RCA output to connect amplifiers or active speakers, greatly improve their sound quality; also adds a 3.5mm headphone jack to drive all 16-200Ω headphones, convenient to enjoy music from record players alone or at night. HiFi sound and tone control: With independent treble and bass control within -5dB to +5dB range, easy to adjust different sound styles to personal preference. With built-in power isolation circuit, no common ground noise will be generated even sharing the same power with audio players.
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A Beautiful piece of vintage audio, only blemish is the ( off-on) knob. Not original. 5 , 12AX7 tubes 1-Daystrom, 3-Amprex, 1 Telefunken.all tested strong. Completely recapped, including Can Electrolytic. All function work. New CD players has to much line level signal causes distortion. The only components not checked is the ( tone control) IC packs. Such a beautiful piece of HK Audio. Selling for parts, but it is complete.
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Using Japanese original ALPS 16 Type 15mm 100k Duplex potentiometer, switch is produced by Taiwan-funded factory. With 4 groups of RCA audio input, convenient to compare different audio source and no need to plug-in and out the cables repeatedly. Gold-plated terminals to guarantee lossless transmission.
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Upgraded 7-band EQ preamp: separate and rich frequency band control (50Hz / 125Hz / 315Hz / 750Hz / 2KHz / 6KHz / 16KHz), T8 can compensate for the defects of speakers and sound field by adjusting 7-band high, middle and low frequencies, and modify various sound sources. The timbre and loudness also can be changed to achieve different sound effects. Real balanced XLR preamp and amp: support XLR and RCA inputs and outputs, T8 can reproduce high-quality audio for amplifier or active speaker with excellent separation, resolution, sound field, clean background. Also with a balance control to compensate for the left and right channel of all outputs and prevent the sound field positioning from deviating from the center position.
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Based on the classic Naim NAC52 power amplifier circuit. Japan 1% high-precision photo-cathode resistance. Assembled Board:have tested it well ! 8 BC axial capacitors.
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