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ETHOS
Overdrive
User’s Manual
Provided to you by:
www.customtonesinc.com
Email: [email protected]
Note: Specifications are subject to change without notice
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ETHOS
Overdrive User’s Manual
Rev -
Overview:
The Ethos Overdrive was inspired by one of the most
sought after boutique guitar amplifiers ever made.
Extensive time and attention to detail were required to
emulate the tone and responsiveness of this amplifier.
The key to Ethos tone, is its ability to transition from
clean to overdriven tones just by the articulation of the
guitar pick or guitar volume control. The Ethos not
only offers great tone and touch sensitivity, but also
provides a high degree of flexibility in one compact
package. The Ethos provides two independent
channels with an integral boost function resulting in 3
different footswitch selectable sounds. The Ethos can
operate in many working situations as well. It can be
used as a guitar amp pedal, a DI interface for broad
band systems (e.g. PA, studio, or PC ) and a preamp
that can feed a power amp/speaker combination
.
Key Features:
• Dual Independent Channels with EQ
– Overdrive
– Clean
• Preamp Boost (OD Channel)
• Speaker Simulation Output
• Guitar Amp Compensation Circuit with Hi-Cut
• Tone Stack Toggles including:
– Brite
– Modern / Classic
– Jazz/Rock
• Operates on a +9V battery or +12VDC Wall
Adapter
• Buffered Inactive Mode Mitigates Loading
Effects
• Compact Size packaged in a rugged die-cast
aluminum chassis
Figure 1.
Ethos Overdrive Block Diagram
Boost
OD
Channel
IN OUT
Clean
Channel
Channel
Select
Note: Specifications are subject to change without notice
Guitar
Amp
Compensation
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GAC
Select
Hi-Cut
Speaker
Simulator
Active
SPEAK
SIM
OUT
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ETHOS
Overdrive
Rev -
Specifications: (Refer to Figure 2.)
User’s Manual
NotesDescriptionFeature
MODERN / CLASSIC
Switch
JAZZ / ROCK Switch
1/4 Inch, 1Megohm Input Impedance, IN Jack
+12 VDC, external power jackPower Jack
Determines Gain Level of PreampGAIN Control
Activate HF Boost in PreampBRITE Switch
Modern Mode = 80’s / 90’s Tone Stack
Classic = 70’s Tone Stack
Jazz = Hi-Fi Style Tone Stack
Rock = Aggressive Mid-Range Tone Stack
Controls Treble Response in Preamp StageTREBLE Control
Controls Midrange Response in Preamp StageMIDDLE Control
Controls Bass Response in Preamp StageBASS Control
Unit is powered when input plug is
inserted
Normal Out1/4 Inch, 1kohm Source ImpedanceOUT Jack
Speaker Simulator Output1/4 Inch, 1kohm Source ImpedanceSPK SIM OUT Jack
Center Pin (-) , 2.1mm x 5.5mm,
500mA adapter recommended
Power consumption = 35mAInternal Battery = 9 VDCBattery
Controls Hi-Frequency Response Post OD stagePRESENCE Control
GAC Switch
HC Control
ACTIVE Footswitch
BOOST Footswitch
CHANNEL SELECT
Footswitch
Activates the guitar amp compensation circuit
when placed in the up position
applications
Selects effect indicated by annunciation of yellow
LED
Activates Boost mode in overdrive channel
indicated by annunciation of red LED
Selects between clean and overdrive channel
indicated by annunciation of red LED for Overdrive
and green LED for Clean
Note: Specifications are subject to change without notice
Not applicable to Clean ChannelControls Overall Output Volume of OD channelVOLUME Control
Turn CW to cut high frequenciesHi-Cut control, Allows Hi-end adjustment for given
When inactive, input signal is
buffered
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ETHOS
Overdrive
User’s Manual
Rev -
100% Analog Circuitry
IN
ACTIVE
ACTIVE
ACTIVE
ACTIVE
CH SEL
CH SEL
CH SEL
CH SEL
BOOST
BOOST
BOOST
BOOST
OUT
SPK
SIM
OUT
TREBLE
TREBLE
TREBLE
TREBLE
GAIN
GAIN
GAIN
GAIN
VOL
VOL
VOL
VOL
MIDDLE
MIDDLE
MIDDLE
MIDDLE
BASS
BASS
BASS
BASS
PRES
PRES
PRES
PRES
BRITE
BRITE
BRITE
BRITE
MODERN
MODERN
MODERN
MODERN
JAZZ
JAZZ
JAZZ
JAZZ
ROCK
ROCK
ROCK
ROCK
CLASSIC
CLASSIC
CLASSIC
CLASSIC
TREBLE
TREBLE
TREBLE
TREBLE
GAIN
GAIN
GAIN
GAIN
MIDDLE
MIDDLE
MIDDLE
MIDDLE
BASS
BASS
BASS
BASS
PRES
PRES
PRES
PRES
BRITE
BRITE
BRITE
BRITE
MODERN
MODERN
MODERN
MODERN
JAZZ
JAZZ
JAZZ
JAZZ
ROCK
ROCK
ROCK
ROCK
CLASSIC
CLASSIC
CLASSIC
CLASSIC
Custom Tones Inc.
ETHOS
Overdrive
HI-CUT
GUITAR AMP COMPENSATION
(ACTIVE = UP POSITION)
TOP VIEW SIDE
VIEW
Figure 2. PEDAL LAYOUT
Note: Specifications
are subject to change
without notice
-
+
12VDC
HCHCHC
HC
GAC
GAC
GAC
GAC
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ETHOS
Overdrive
Typical Applications:
Guitar
Amp
Broad
Band
Speaker
Interface
(PC, PA, etc)
DI
Rev -
SPK
SIM
OUT
OUT
User’s Manual
Ethos
IN
GAC ON
Ethos
SPK
SIM
OUT
OUT
GAC OFF
IN
Guitar
Guitar
Standard
Guitar
Speaker
Note: Specifications are subject to change without notice
Power
Amp
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Ethos
SPK
SIM
OUT
OUT
GAC OFF
IN
Guitar
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