Switchcraft SC800 Instrument Direct Box

The SC800 Instrument Direct Box from Switchcraft® converts the outputs of high impedance line level audio devices and musical instruments to low impedance, balanced and isolated mic level signals that can be connected to audio consoles, mic pres, effects processors and other equipment with 3-pin XLR inputs.

The SC800 was developed with one goal in mind... to provide audio engineers and musicians with the highest quality passive direct box available today.

Built by hand in Chicago, USA.

SC800 Technical Specifications:

All measurements were taken with a 25Ω source into a 1kΩ load measured on XLR output.

Common Mode Rejection
Greater than 100dB at 60Hz

Input Impedance
Greater than 150kΩ at 1kHz

Output Impedance
Less than 170Ω at 1kHz

Phase Response
Less than 3° at 20Hz
Less than 1° at 1kHz
Less than 16° at 20kHz

Total Harmonic Distortion + Noise
Less than .05% (At 20Hz, +4dBu)
Less than .006% (At 1kHz, +4dBu)

Maximum Input Level
+21dBu (At 20Hz with 1% THD)
+41dBu (With 20dB Pad Engaged)