Technics dual 31 band equalizer is the finest of all technic’s equalizers.
first Introduced in 1983, still in excellent condition.
it is capable of equalizing even beyond the listening range,
 
Equalizer range: 16hz to 25khz range.

Frequency characteristic    5 Hz to 100 kHz -1dB
Maximum output voltage    8 v (1 kHz, THD 0.01%), (Low Level 150 mv)
Rated output voltage    1V
Total harmonic distortion factor    0.0025% (20 Hz to 20 kHz)
Input sensitivity    1V
Signal-to-noise ratio (IHF-A)    110dB
Maximum Input Voltage    8 v (1 kHz), (Low Level 150 mV)
Input impedance    47k Ω
Output impedance    600 Ω
Gain    0 ± 1 dB
Band level control    ± 12 dB, ± 3 dB (33 elements, continuously variable)
Input level switching    150mV/1V
Center frequency    16 Hz, 20 Hz, 25 Hz, 31.5 Hz, 40 Hz, 50 Hz, 63 Hz, 80 Hz
100 Hz, 125 Hz, 160 Hz, 200 Hz, 250 Hz, 315 Hz, 400 Hz
500 Hz, 630 Hz, 800 Hz, 1 kHz, 1.25 kHz, 1.6 kHz, 2 kHz
2.5 kHz, 3.15 kHz, 4 kHz, 5 kHz, 6.3 kHz, 8 kHz, 10 kHz
12.5 khz, 16 khz, 20 khz, 25 khz
Pwer    100 VAC, 50Hz/60Hz
Power consumption    22W
External dimensions    Width 430x Height 153x Depth 330 mm
Weight    6.6kg
 
Note: this is 100v only