Channel Strip CS1



press to zoom

press to zoom

press to zoom

press to zoom

User's Manual

A powerful front end tracking solution with three modules in one rack space. 

The input section features a discrete op amp fed by three different modes. In mic input mode it is a classic mic pre using an input transformer and providing up to 64 dB of clear, punchy gain. The mic preamp features switchable phantom power and a 20 dB pad. In line input a second discrete op amp is used as a balanced transformerless input for +4 dBu nominal inputs. It can also be used for a front-panel accessible high impedance instrument input. Phase and mute are available for all functions. The input amplifier feeds an output transformer followed by a 600 ohm T-pad attenuator, allowing you to drive the input stage and transformer to get the right amount of gain and growl. A post-attenuator "mic pre" out is available.

The equalizer is a three-band, sweepable frequency design using three discrete op amps and a second output transformer. Inspired by a late seventies console that became a cult classic, our spin takes the design to a whole new level. Each band features 15 dB of boost or cut. A balanced +4 dBu nominal insert point is available post-EQ.

Finally, a balanced input stage feeds a "fader" with 12 dB of gain "in hand" followed by a console style discrete line amplifier, and -- you guessed it -- another output transformer.

The input gain, attenuator, and fader knob give a massive range of sonic possibilities, and with seven op amps and four transformers you'll never want for massive mojo. This is Iron Age at its finest!

Block Diagram


Technical Specifications

Gain Range

               Mic Preamp                      28 - 64 dB (8-44 dB with PAD)

               DI                                     10 - 46 dB

               Line Input                          0 - 36 dB

Maximum Input Level

               Mic Preamp                     -3.5 dBu

               DI                                     +21 dBu

               Line Input                        +20 dBu

Maximum Output Level                  +26 dBu, all outputs

Input Impedance

               Mic Preamp                       2300 Ohms

               DI                                      >1 MOhms

               Line Input                          >10 kOhms

Output Impedance (all)                    <75 Ohms, transformer balanced

Frequency Response                       +0.10, -1.4 dB 20Hz-20kHz

Actual Measured Noise                    -96.4 dBA line input to channel output

THD @ +15 dBu output                    0.002% typical, line input to channel output

Power Consumption                         125 mA max

EQ Frequency Response

LF icon.png
LF graph.png
MF icon.png
MF graph.png
HF icon.png
HF graph.png
HPF icon.png
HPF graph.png

This design has been retired for now. If you are interested in owning one, please contact us at: