PCH-1 DI Active Direct Interface

• Two channel design - use in stereo or dual mono, whichever fits your setup
• Runs on 9VDC - internally converted to 24V to be virtually unclippable
• Onboard headphone amplifier powerful enough to drive high impedance headphones
• Switchable Mic/Line level operation for the XLR outputs
• Defeatable ground lift for the XLR outputs
• Defeatable Sum for the Thru outputs
• Internal supply uses a custom transformer for galvanic isolation
• Basically, PCH runs off of a modified internal mini Ojai power supply
• Flat frequency response with Extremely low THD (Total Harmonic Distortion)

Specifications

In

• Input Impedance: 1 M?
• Max Input Level: +20dBu

Thru

• Output Impedance: 100 ?
• SNR: +135dB (A-Weight)
• Noise Floor: -115dBV (10-22kHz no A-Weight)
• Gain Relative to Inputs: +0dB
• Frequency Response: +/- 0.25dB, 10Hz - 80kHz+

HP

• Output Impedance: 2 ?
• Frequency Response: +/- 0.25dB, 10Hz - 80kHz

XLR, Line Setting

• Output Impedance: 275 ?
• SNR: +130dB (A-Weight)
• Noise Floor: -110dBV (10-22kHz no A-Weight)
• Gain Relative to Inputs: +0dB
• Maximum Output Level:+20dBu
• Frequency Response: +/- 0.25dB, 10Hz - 80kHz+

XLR, Mic Setting

• Output Impedance: 100 ?
• Gain Relative to Inputs: -20dB
• Maximum Output Level: +0.0dBu
• SNR: +125dB
• Noise Floor: -125 dBV (10-22kHz no A-Weight)
• Frequency response: +/- 0.25dB, 10Hz - 80kHz+

Power Supply

• Input Voltage: 9VDC
• Current Requirement: 500mA
• Generated Supply: +/- 12V