MSS-1 
MSS-1TR
18db High Quality Stereo Subsonic/Rumble Filter
Standard Freq. 20Hz (Can Be Changed by buyer request)
3rd Order High Pass Filter Avoid very low vibrations and frequencies caused by turntables/vinels
MSS-1 Filter with Low Noise IC Work with Dual 9-15Vdc
MSS-1TR Filter with Low Noise Transistors Work with Single 15-24Vdc
Excellent Performance
Ideal for Phono Stage output stage
Removes movements below Low audio spectrum
Order Option:
1.Assembled Board Ready to use
2.PCB + Parts you need to solder it
 High quality and reliability PCB FR4 1.6MM
Input/Output & Power Supply Connectors will supply
Working Voltage : 
Model MSS-1: 2x9-15Vdc (+ 0 -)
Model MSS-1TR: 15-24Vdc (+ 0)
Gain Level 0db (1:1 Ratio)
Filter: 20Hz 18db/octave 3rd order High Pass Filter
PCB Size: 
MSS-1 50mm*27mm double-sided HAL,FR4 1.6MM 
MSS-1TR 60mm*32mm double-sided HAL,FR4 1.6MM