Preamp

Adams Digital Pre-Amp 4 Band Parametric Equalizer 
Model: EM-401(EMPIRE Series)

SPECIFICATIONS
USB Port 
TF/MicroSD Card Port
MP3/WMA Audio Format Reader 
Power Supply: 11 - 15V DC Neg. Ground
Max. Output Voltage :  7V RM
Pre Graphic Frequency: 50Hz, 315Hz, 2.

Adams Digital Pre-Amp Digital Echo Car Audio System Equalizer
 Model : GTR-532 (GTR-Series)

SPECIFICATIONS
MIC Input
Mic Volume 
Power Supply : 11-15V DC NEG. GROUND
S/N Ratio : 80dB Ref 1V Input
Frequency Response : 10Hz-30KHz (-3dB)
T.H.D. : 0.

Adams Digital 4 Band Parametric Equalizer
 Model : AD100EQ4H Jade Series

SPECIFICATIONS
Power Supply : 11-15V DC NEG.GROUND 
Max.

Adams Digital 7 Band Parametric Equalizer
 Model : GTR-707 (GTR-Series)

SPECIFICATIONS
Power Supply : 11-15V DC NEG. GROUND
Max. Output Voltage : 7V RMS
Pre Graphic Frequency : 50Hz, 125Hz, 315Hz, 750Hz, 2.

Adams Digital 7 Band Parametric Equalizer
Model : GTR-737 (GTR-Series)

SPECIFICATIONS
T.H.D. : 0.05%
S/N Ratio : 90dB
Input Impedance : 10K Ω
Subwoofer Frequency : 15K Ω
Equalization Range : ±18dB
Subwoofer Frequency : 15K Ω
Max. Output Voltage : 7V RMS
Power Supply : 11-15V DC NEG.