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
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)
Features:
4-band equalizer, rotate bass/middle/treble to adjust volume frequency.
With phase and tuner function.
Tone and volume control.
LED for battery check, replace battery when Batt lights.
Built-in microphone with mic blend level control.
Unique pivot design for instant 9-Volt battery access.
Powered by a 9V battery (not included).
Volume：
1. For the cleanest signal set the volume as high as possible without distorting the amp or mixer.
2. Bass
A boost here above the centre detent will add depth and weight to the sound of the instrument. Move the bass slider below the centre detent to tighten up a big and boomy tone.
3. Middle
More than any other control the middle slider can affect the character of your instrument's tone. Typically a slight mid cut just below the centre detent will help bring out roundneses in the bass and will unmask the treble. A deep midtone cut produces a "scooped out" tone that works well at high volume levels and can help to reduce feedback. Boost the mids for an "in your face" nasal quality, similar to an electric guitar tone.
4. Treble
A boos here will help to "cut through the mix". Conversely cutting the treble will mellow and subdue your amplified tone.
Brilliance This slider can add shimmer and sparkle to you sound. It zeros in on "extra crispy" high frequency tones; the real of harmonics and acoustic string sound. Lower the Brilliance slider can help to reduce finger noise and fret buzz.
