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INTRODUCTION

 

 
The 877 series modules are self powered, self contained channels that can be used on their 
own (no chassis required) or as part of a larger framework for recording and mixing.  
The 8776A features mic, line, and instrument inputs, as well as filters, 4 band eq, FET limiting, 
and controls to shape and exploit the harmonic character of the circuitry throughout. Modules 
can be mounted vertically in dual, quad, or a 10 space rack-mountable chassis (5RU high). 
Audio connections are via XLR and TRS connectors with access to several points in the signal 
path. 
 
The Imperial Channel’s preamp and drive amps were inspired by late 60’s English solid state 
consoles. Their primitive design makes them incredibly forgiving with a wide range of 
nonlinearities before overt clipping (a wide sweet spot), and with that they are generous with 
low order harmonics, and can be driven into full distortion. These stages are ‘cushioned’ in this 
design allowing them to be used exploited in new ways. 
 
The concept of the channel is to have a fluid interactive chain, where creative decisions can be 
made by immediately by turning controls and switches. Multiple stages distribute the rounding 
and harmonics, each with different characters. The HARMONICS stage at the end of the chain 
has MAS circuitry, and can ‘control’ peaks, and smooth harsh frequencies, allowing the 
equalizer for instance to be approached creatively and aggressively. As an example, the 
proportional Q bells have a large amount of gain and can be driven almost to the point of 
oscillation, which can sound raw on its own, but driven into the harmonics circuitry can be 
‘absorbed into the signal and become a band of harmonic distortion. 
 
 
FEATURES 

Microphone, line, and instrument inputs 

Transformer coupled input and output 

Multiple discrete gain stages 

High and low pass filters 

4 band equalizer with high and low shelving boosts, and 2 fully sweepable mid bands 

FET Limiting Amplifier with sidechain filter and 3 position attack and release controls 

MAS harmonics 

Independent preamp (dry) and channel (wet) output faders for parallel processing 

Polarity, pad and phantom power 

4 segment level and gain reduction metering 

 
 

 

Copyright © 2018, Overstayer Recording Equipment, Inc.. All rights reserved. All features and specifications subject to change without notice 

 

Summary of Contents for IMPERIAL CHANNEL 877 Series

Page 1: ...IMPERIAL CHANNEL 8776A REFERENCE v1 1...

Page 2: ...re creative decisions can be made by immediately by turning controls and switches Multiple stages distribute the rounding and harmonics each with different characters The HARMONICS stage at the end of...

Page 3: ...ect the equipment from power supply to avoid being damaged by voltage peaks or lightning strike Warning Caution 1 Risk of electrical shock and energy hazard All failure should be examined by a qualifi...

Page 4: ...settings HARMONICS Engage HARM middle position is stronger 3rd upper 2nd to see how it interacts and can control the eq boosts Increase DRIVE compensating with the CHANNEL fader to get it s feel with...

Page 5: ...mixing with the fully processed CHANNEL fader and the dry MIX fader The faders are additive so they may require balancing to maintain headroom The preamp fader has an access point on the rear panel a...

Page 6: ...SIGNAL FLOW Copyright 2018 Overstayer Recording Equipment Inc All rights reserved All features and specifications subject to change without notice...

Page 7: ...LPF Low pass filter selectable between 7K5Hz 15KHz and bypass TRANSFORMER CURVE Changes the response curve of the output transformer 50Hz rolloff with a resonant peak loading dependent EQUALIZER EQ IN...

Page 8: ...Unbalanced high impedance instrument input PREAMP OUT Direct output post HPF EQ IN Direct input pre Equalizer normalled to the PREAMP OUT EQ OUT Direct output post Equalizer COMP IN Direct input pre...

Page 9: ...e AUX can be fed from the COMP OUT to blend the Limiter with the Harmonics EXAMPLE 3 right Allows an external device to be blended in parallel using the PREAMP fader The external device can be fed fro...

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