Classic 4 User’s Guide
Specifications
Nominal Input Level
-18 dBV
Input Overload
-4dBV (20 Hz- 20 kHz)
Input Impedance
20 M Ohm
Output Impedance
Less than 3.5 k Ohm
Nominal Output Level
-6 dBV
THD
Less than .04%, -18 dBV input
Signal to Noise Ratio
77 dB (A weighted, referred
to nominal –18 dBV input)
Current Drain
Less than 1.9 mA
Power Supply
9V alkaline battery
(est 300 hrs continuous)
Bass Control
± 12 dB at 60 Hz,
± 3 dB at 350 Hz
Treble Control
± 12 dB at 10 kHz,
± 3 dB at 2.4kHz
Middle Control
± 12 dB at 700 Hz
(3 dB bandwidth at 1 kHz)
Brilliance Control
± 9 dB at 10 kHz
(3 dB bandwidth at 7 kHz)
All specifications subject to change without notice.
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