XiangSheng 728A Pre-Amplifier Tube preamplifier Shigeru WADA Japan Electrical Circuit Preamp with Tone Control Upgrade（Black）

Please note: The machine you receive will be sprayed with industrial protective wax before shipment. Please open the plastic package, wipe the case and panel with a soft cloth, or let it dry naturally.
Specifications:
Input Impedance：100K
Output Impedance：600 ohm
Total Hamonic Distortion： less than 0.01%
Frequeney Responses： 10Hz-30KHz
Signal to Noise Ratio： 90dB
Input Jack： 4 groups
Output Jack：2 groups
Supply Votage： AC110V-AC120V 60Hz/50Hz(For United States）
If you need other voltages, please contact us first.
Power voltage: 110v-120v 60Hz(For United States)
If you need to use it in Europe, there is a selective switch to set it to be 220V-240V ,It works well in Europe too.  
Size: 430mm(Width )×90mm(Height )×290mm(Depth )
Vacuum tubes: 12AT7×2、12AU7×2、6U4x2 (Upgraded to Russian 6U4x2)
Working environment: Temperature:5℃_40℃
Humidity：35%_80%
Gross weight: 7.1kg

Packing Includes:
1.5m Power Cord
English instruction manual

All items guaranteed 100% BRAND NEW in the original edition Box.
ONE-YEAR WARRANTY !!!