Features:

Preamp

• Input: Balanced, using “Transformer-Like-Amplifier” (T.L.A.) with toroidal Common Mode Rejection Low Pass Filter
• Input Impedance: 10,000 Ohms + or – 20%
• High Pass Filter: Swept Frequency continuously variable from 20Hz to 250Hz.
• Slope: 12dB/Octave.
• Gain: Switched Gain from Unity to +66dB in 6dB steps.
• “Trim”: Continuously adjustable potentiometer from -6dB to +6dB with reference to setting on the Gain Switch.
• Balanced and Floating Transformer Output from 20Hz to 40kHz: +25 dBu. (Clips at just over +26 dBu)
• Mute: Mutes Main Output only. (i.e. Monitor remains “Live”)

Compressor/limiter

• Gain Range: Continuously variable from -6dB to +20dB.
• Threshold Range: Continuously variable from -36dB to +22dB.
• Ratio Range: Continuously variable from 1.1:1 to “Limit” (40:1).
• Attack Range: Continuously variable from 20mS to 75mS
• Release Range: Continuously variable from 100mS to 2.5 Seconds.
• FF/FB: Feed-Forward or Feed-Back VCA control.
• External 15V Supply included with every Portico Series module.