API Audio The Channel Strip - Manual (Page 4)

1.0 Overview
The Channel Strip (TCS) is a complete input module with microphone preamplifier, dynamics processing,
precision EQ, and output level control. With extensive signal metering, multiple balanced insert points and an
output mute switch, The Channel Strip contains the best features of a large console input channel in a single
rack space. It's the perfect choice for anyone looking for that high-performance API console sound.
1.1 The Channel Strip Features and Introduction
Features
• API 512C Preamplifier
• API 527 Compressor
• API 550A Equalizer
• API 325 Line-Driver
• Internal routing supports multiple configurations
• Comprehensive rear panel interface with multiple insert points
• Two 10-segment LED VU displays
• Output clips at +30dBm
• API's all discrete signal path
• Transformer outputs
The result of thoughtful engineering, The Channel Strip includes everything needed to record an audio
signal. It all starts with the famed 512C Preamplifier, which includes the benefit of additional Mic, Line or
Instrument input switching. Next is the 527 multi-mode compressor with fully adjustable Threshold,
Attack, Release, and Ratio controls on detented pots. The patented THRUST® circuit in the 527
Compressor gives your track the "in-your-face" punch that has made this circuit an award winner. Also
included in The Channel Strip is probably the most recognized and revered API EQ of all time, the 550A
three-band equalizer with its switchable frequencies and 12dB of boost or cut. The 550A Equalizer's High
and Low frequency bands can be individually switched to be shelving EQs, and the "B.P. Filter" switch
inserts a 50Hz to 15kHz Band-Pass filter.
At the output of the unit is the 325 Line-Driver, taken directly from API console designs with an output
level pot and 10-segment VU meter. The meter can also be switched to show the output level of the
preamp. Each of The Channel Strip's processing pieces can be switched in or bypassed individually,
while a flip switch internally routes the compressor after the EQ if desired. Additional features include a
side-chain input and the famous API 2520/transformer combination.
3