SEYMOUR DUNCAN SFX-09 Double Back Compressor - Compressor Pedal for Guitar and Bass with Three Frequency Options, Unique "Double Back" Circuitry, and True Bypass

Simply put, a compressor makes quiet passages louder and loud passages quieter. Most other compressors can get in the way of your guitar's natural transients and feel. Thanks to the innovative and unique Double Back feature and associated three-way EQ switch, the Double Back Compressor lets the original guitar signal leak back into the compressed tone for a natural performance like no other. The Double Back can also increase the clean sustain of your guitar, and it does this with almost no extraneous noise or interference thanks to revolutionary VCA circuit topology. This is the cleanest, quietest and most expressive compressor around.

Compression Ratio: Adjustable from 1:1 to 20:1
Maximum Compessor Gain: +50dBr
Attack Speed: Adjustable from 3.2ms to 50ms
Double Back Gain: Fully “off” to +34dB
Battery Life: 100 Hours with a premium alkalinebattery
Power Source: 9V battery or external 9VDC regulated wall transformer, center pin negative. 5mA current drain
Input Impedance: 1 Megohm (1000K ohms)
Output Impedance: 2.75K ohms maximum
Output Clipping Level: 7V Peak-to-Peak
Distortion: Less than 0.3% at 300mV RMS output at 1 kHz
Noise referred to Input: -102dBV unweighted, 400Hz – 20kHz, input shorted
Type of Circuitry: True bypass, class A
Compressor type: Voltage Controlled Amplifier
(VCA)
Dimensions: 4.75” wide X 5.0” tall X 2.3” high
Weight: 1.5 lbs.
Chassis material: 16 Gauge Steel