HiFi 12AX7 Vacuum Tube Preamp DIY KIT Stereo Home Desktop Audio Preamplifier Marantz M7 circuit

Name: HiFi 12AX7 Vacuum Tube Preamp DIY KIT Stereo Home Desktop Audio Preamplifier Marantz M7 circuit
Brand: FYFAUDIO
SKU: 胆机大叔--M7 成品机 （220V)带底板 带蓝牙（R808）
Price: 195 USD
Availability: InStock

this preamp is base on the famous Marantz M7 circuit. the sound is very good.

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~~$189.00~~ $195.00

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Description

Note: the DIY kit will need yourself to built it. (The kit Not recommended for novices )

the Finished preamp is built well. connect power will can use it.

The KIT or finished preamp both Not include power cord, please prepare it by yourself.

Parameters:

AC power supply: 110V or 220V
(the Kit tranfsormer primary is 0-110V 0-110V. it can connect as 110V or 220V input)
Audio Input: 4 groups * Stereo L/R RCA
Audio Output: RCA
Frequency Response: 10-26kHz (+/- 0.11dB), about 15 times voltage amplification
Total Harmonic Distortion: 0.078%
Signal to Noise Ratio: 99dB
Chassis Dimensions: 320mm*170mm*50mm
Weight: 4KG

Features

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.

Using 0.8mm stainless steel CNC punching chassis, its SNR up to99dB, the background is extremely clean without any noise.

Using WINA MKP10 0.1uf capacitors, 0.39u Swiss RIFA PHE 426 series, IT 2.2uf capacitors, etc.

Power transformer uses H360 0.5 piece 76 * 40 core, especially with double shielding layers GND，grounding line is yellow-green line outlet. A group of filament 3.15v * 2 for 3*12AX7 filament power supply, high-voltage 270V * 2 uses 6Z5P tube rectifier. Amplification circuit using scaffolding of welding.

the following connect draws. we can provide Clear PDF file. if you need. Please contact us.