Thank you for purchasing the Diamondhead
Multistage Distortion + Boost! Make sure to visit
SeymourDuncan.com for the most up to date info and
sound samples.
Across genres and generations, the sound of a half
stack pushed hard with drive and boost has become a
standard for rock tones. From the classic bands of the
seventies, to the pioneering metal tones of the eighties, the combination of tube heads and drive pedals
has created some of the most iconic guitar tones of
all time. Diamondhead aims to capture the power and
versatility of that quintessential rig in a package that
will find a space on any pedalboard.
12 13 14
1 2 3
4 6
5
1. Bass
2. Midrange
3. Treble
4. Booster Level
5. Distortion Level
6. Distortion Gain
7. Saturation Switch
7
810
911
8. Distortion Indicator
9. Distortion Footswitch
10. Booster Indicator
11. Booster Footswitch
12. Input Jack
13. Output Jack
14. Power Jack
Bass Control
+/-16dB @ 80HZ, Q-2.6
Midrange Control
+/-13dB @ 800Hz, Q-1.3
Treble Control
+/- 13dB @ 6kHz, Q-1.2
Booster Level
Provides up to 15dB of post-distortion boost, can be
used as an independent booster.
Distortion Level
Adjusts the loudness level of the distortion circuit. Oc-
curs immediately before the booster in the circuit ow.
Distortion Gain
Adjusts the gain of the distortion circuit, from 29dB up
to a maximum of 55dB.
Saturation Switch
Engages an additional gain stage that provides an extra
24dB of contoured mid boost with secondary overdrive
for deep saturation.
Distortion Indicator
When LED is on, the distortion circuit is active. When
the LED is off the unit is in true bypass.
Distortion Footswitch
Alternately engages and disengages the distortion
circuit.
Booster Indicator
When the LED is on, the booster circuit is active.
Booster Footswitch
Alternately engages and disengages the booster circuit.
Input Jack
Plug in a musical instrument cable or the signal from the
preceding pedal on your board.
Output Jack
Run a cable out to your amplier or the next pedal on
your board.
Power Jack
Apply 9 -18V DC, 200mA minimum, Use a plug with
2.1mm internal diameter, center negative.
Sample Settings
Boost: off
Boost: off
Boost: off
Highway Priest
Lower gain, bright
early 80’s classic metal
Classic 80’s Hard
Rock
Higher gain, warmer
low end for tight
palm-muted rhythm.
Perfect for all 80’s
hard rock songs
Pantallica
Big mid scoop and
tight bottom
Boost: off
Boost: off
Boost: ON
British Snarl
Mid-range punch
Lower Gain
Note articulation
Mid-late 70’s classic
hard rock
Snotty Mids
Powerful EQ and
mid-range bump
Gives an aggressive
tone for distinct
leads and pissed off
power chords
Innite Sustain
Thick, rich lead tone
Notes bloom with
incredible sustain
Disposal Guidelines
In the unlikely event that you ever need to dispose of
this product, it must be disposed of properly by handing
it over to a designated collection point for the recycling
of waste electronic equipment. Please contact your local
household waste disposal service or the shop where you
purchased this product for those locations. Thanks for
helping us conserve natural resources and ensure that it
is recycled in a manner that protects human health and
the environment.
Tech Specs
Input Impedance: 500KΩ
Output Impedance: 100Ω
Gain Range: 30 to 54dB
Gain Range with Sat On: 45 to 69dB
Independent Booster Gain: 0 to 15dB
Noise, Referred to Input: 127dBV
Noise, Sat On: 129dBV
Noise, Booster On: 117dBV
Frequency Response: Response charts available online
Power: 9 - 18V regulated DC adapter (center pin
negative)
Current Consumption: 130mA @9V / 65mA @18V
Dimensions: 3.5” x 4.7” x 1.6”
Weight: 0.9lbs
Limited Warranty
Seymour Duncan offers the original purchaser a
one-year limited warranty on both labor and materials
from the day this product is purchased. We will repair
or replace this product at our option if it fails due to
faulty workmanship or materials during this period.
Defective products can be returned to your USA dealer,
international distributor, or sent direct to our factory
postage prepaid along with dated proof of purchase
(e.g., original store receipt) and RMA number. Call or
email our factory for an RMA number which must be
written on the outside of the box. We reserve the right
to refuse boxes without an RMA written on the outside.
As you might expect this warranty does not apply if
you’ve modied the unit or treated it unkindly. We can
assume no liability for any incidental or consequential
damages which may result from the use of this product.
Any warranties implied in fact or by law are limited to
the duration of this express limited warranty.
Notes
Commitment to Quality
and Community
Seymour Duncan takes pride in designing and crafting
our products to create the most amazing sound possible.
Our Made in the USA label designates that the products
are designed in Santa Barbara, California and manufactured in the USA with quality parts sourced in the
United States and around the world.
With everything we create, our passion and obses-
sion for amazing sound is reected in its quality and
reliability.
seymourduncan.com
5427 Hollister Ave, Santa Barbara, Ca 93111
805.964.9610
© 2019 Seymour Duncan. All Rights Reserved.
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