Pricing and availability

We compare 600+ stores and found this item at 5 stores. Prices updated .

Sweetwater
4.0 (2)
$229.00
Amazon
3.2 (6)
$199.00
Reverb
4.0 (3)
$199.00 New
$140.00 Used
zZounds
5.0 (2)
$229.00

Average Price: $199

High-end/Boutique

$50

$176+

Price Tier

Budget

Standard

High-end

Price History

Based on price data from 2 merchants for "Seymour Duncan Diamondhead". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

Introducing the Seymour Duncan Diamondhead, your ultimate solution for the quintessential '80s metal tone. This multi-stage distortion stompbox is designed to deliver the iconic sounds of legendary bands like Priest, Maiden, RATT, and Ozzy, all at your fingertips. Whether you're a tone perfectionist or a rock enthusiast, the Diamondhead will not disappoint.

Featuring a powerful 3-band EQ, the Diamondhead allows you to dial in your tone with surgical precision. The Bass knob employs a super-tight curve at 80Hz, adding depth to your tone without any mud or flabbiness. The Mid knob utilizes a broad curve at 800Hz, perfect for achieving aggressive attack, colossal scooped chunk, and everything in between. The Treble knob, set at 6kHz, adds sizzle, cut, and articulation to your playing.

The Diamondhead is more than just a distortion pedal; it's a versatile and effective tool for shaping your sound. The SAT switch, based on Seymour Duncan’s 805 Overdrive, adds a 24dB pre-gain boost that subtly rolls off lows and highs, adding amazing, chewy, harmonic saturation to your tone.

Key Features:

  • Serves up the quintessential ’80s hard rock tone using the classic half-stack-pushed-hard-with-a-drive-and-boost formula
  • Captures the vibe of iconic bands like Judas Priest, Iron Maiden, RATT, Ozzy Osbourne, and Def Leppard
  • Injects the sound of a cranked amp stack into a clean amp
  • Punishes the front end of an overdriven amp for gorgeous saturation
  • Functions as a hot-rodded high-gain preamp — just plug into your amp’s effects return
  • 3-band EQ dials in your tone with surgical precision
  • SAT switch adds a 24dB pre-gain boost based on Seymour Duncan’s 805 Overdrive
  • Independent Boost footswitch kicks in a variable gain boost of up to 15dB

Product specs

Pedal Type Distortion, Boost
Analog/Digital Analog
Inputs 1 x 1/4"
Outputs 1 x 1/4"
True Bypass Yes
Bypass Switching True Bypass
EQ Active 3-band EQ
Controls Boost, Level, Gain
Power Source 9-18V DC power supply (sold separately)
Power Usage 130mA @9V, 65mA @18V
Height 1.6"
Width 3.5"
Depth 4.7"
Weight 0.9 lbs.

FAQs

What type of power supply does the Seymour Duncan Diamondhead require?

The Seymour Duncan Diamondhead requires a 9-18V DC power supply, which is sold separately. It uses 130mA at 9V and 65mA at 18V.

Does the Seymour Duncan Diamondhead offer true bypass switching?

Yes, the Seymour Duncan Diamondhead features true bypass switching, ensuring that your signal remains uncolored when the pedal is not engaged.

Can the Seymour Duncan Diamondhead be used for both distortion and boost?

Yes, the Seymour Duncan Diamondhead is a multistage pedal that provides both distortion and boost functionalities, allowing for versatile tone shaping.

What kind of EQ controls does the Seymour Duncan Diamondhead have?

The Seymour Duncan Diamondhead is equipped with an active 3-band EQ, allowing you to adjust bass, mid, and treble frequencies for precise tonal control.

Is the Seymour Duncan Diamondhead suitable for high-gain metal tones?

Yes, the Seymour Duncan Diamondhead is designed to deliver high-gain distortion, making it suitable for metal and other heavy music genres.

Seymour Duncan

Seymour Duncan

Exploring the Diamondhead Distortion + Boost Pedal

Video thumbnail for Exploring the Diamondhead Distortion + Boost Pedal by Seymour Duncan

Exploring the Diamondhead Distortion + Boost Pedal

Seymour Duncan

Seymour Duncan

Video thumbnail for Seymour Duncan DIAMONDHEAD Multistage Distortion+Boost w/ Doug Rappoport by Doug Rappoport

Seymour Duncan DIAMONDHEAD Multistage Distortion+Boost w/ Doug Rappoport

Doug Rappoport

Doug Rappoport

Video thumbnail for Seymour Duncan: DIAMONDHEAD Multistage Distortion & Boost by Brett Kingman

Seymour Duncan: DIAMONDHEAD Multistage Distortion & Boost

Brett Kingman

Brett Kingman

Video thumbnail for Seymour Duncan Diamondhead Multistage Distortion Boost Pedal Demo by Shawn Tubbs by Shawn Tubbs

Seymour Duncan Diamondhead Multistage Distortion Boost Pedal Demo by Shawn Tubbs

Shawn Tubbs

Shawn Tubbs

Video thumbnail for Wes Hauch Diamondhead Distortion + Boost Pedal Demo | Seymour Duncan by Seymour Duncan

Wes Hauch Diamondhead Distortion + Boost Pedal Demo | Seymour Duncan

Seymour Duncan

Seymour Duncan

Video thumbnail for Seymour Duncan Diamondhead Multistage Distortion + Boost Pedal Demo by Sweetwater

Seymour Duncan Diamondhead Multistage Distortion + Boost Pedal Demo

Sweetwater

Sweetwater

Video thumbnail for Seymour Duncan Diamondhead Distortion and Boost - JayLeonardJ by JayLeonardJ

Seymour Duncan Diamondhead Distortion and Boost - JayLeonardJ

JayLeonardJ

JayLeonardJ

Video thumbnail for Seymour Duncan Diamondhead Distortion + Boost - Sound Demo (no talking) by Guitar Bonedo

Seymour Duncan Diamondhead Distortion + Boost - Sound Demo (no talking)

Guitar Bonedo

Guitar Bonedo

Video thumbnail for Seymour Duncan Diamondhead Distortion by shnobel

Seymour Duncan Diamondhead Distortion

shnobel

shnobel

Video thumbnail for Seymour Duncan DIAMONDHEAD Distortion + Boost - Luca Mantovanelli by Luca Mantovanelli

Seymour Duncan DIAMONDHEAD Distortion + Boost - Luca Mantovanelli

Luca Mantovanelli

Luca Mantovanelli

Reviews

PROS

  • Versatile distortion suitable for classic rock and modern metal

  • Independent boost feature enhances utility

  • Saturation switch adds significant tonal variation

  • Solid build quality, durable even when poorly packaged

  • Boost and distortion can be used simultaneously or separately

  • Quiet operation, avoids unwanted hiss and noise

  • Provides tight and full tone with the saturation feature

  • Effective with various setups: in front, through effects loop, or with digital rigs

CONS

  • May not fully satisfy those seeking exclusively modern metal tones

  • Lacks the warmth and transparency of a true 80's stack sound

  • Can dominate your guitar's natural tone, making it sound solid state

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Seymour Duncan Diamondhead.

Setup and maintenance

  • Check diodes and transistors near relays under magnification for damage; issues can be subtle, like bubbling on transistor surfaces.

    Source
  • Reflowing solder on stomp switches and pots is recommended as they are common failure points without obvious signs.

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Features and functionality

  • Continuity issues in both modes may indicate a switching problem; ensure in and out jack tips only have continuity in bypass mode.

    Source
  • Relay coils may not receive power due to a defective foot switch; use a multimeter to check for ground provision to the relay's coil.

    Source
  • The Diamondhead includes a SAT switch resembling the 805 overdrive pedal and an independent Boost switch, effectively providing three pedals in one.

    Source

Use cases and applications

  • Users have successfully utilized the Diamondhead for diverse genres from bluesy classic rock to doom and death metal, showcasing its versatility.

    Source

User experience

  • Owners report the Diamondhead works well with a range of guitars, including Epiphone Les Pauls, Ibanez AZ, and PRS baritone guitars.

    Source

Comparisons

  • While similar pedals like the REVV G4 and EVH 5150 Overdrive also perform well, the Diamondhead offers additional features, making it a preferred choice for some users.

    Source

Value and pricing

  • Priced around $220, the Diamondhead is considered worth the investment due to its versatility and multiple functions in one pedal.

    Source

Critic Reviews

Guitar Pedal X - News - Seymour Duncan Unleashes 70's/80's Half-Stack Inspired Chewy Harmonics High Gain Diamondhead Multistage Distortion + Boost

guitarpedalx.com

Seymour Duncan's Diamondhead pedal channels the revered tones of 70s/80s Marshall amps, boasting irresistible chewy harmonics and a versatile 3-band active EQ. Its intuitive design and multiple gain stages offer impressive sound shaping for nostalgic rock tones. However, the review highlights a lack of transparency regarding its inner workings and a notable price disparity between the US and UK markets, which could deter some buyers. Despite these drawbacks, the pedal's performance and unique character make it a strong contender for any guitarist seeking that classic high-gain sound. Overall, a worthy addition to any pedalboard, though be mindful of the pricing nuances.

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