OKKO FX Diablo GH Signature

Diablo GH Signature

£214.00

Highlights

• Gregor Hilden signature dual overdrive and boost pedal
• Super clear, warm amp-like tones with tight punchy low end
• Highly dynamic response with adjustable headroom and compression feel
• Extensive gain, EQ and input controls for precise amp matching
• All analogue dual circuit with independent post-drive boost
• Hand built and wired in Germany
• Durable all-metal enclosure for gig-ready reliability
• Gold enclosure with clear black graphics
• LED power indicator for on/off status
• True bypass switching preserves your core tone
• Fully analogue signal path throughout
• Top mounted jack sockets and DC input for neat pedalboard layout
• Manufacturer warranty for long-term confidence

Description

The OKKO FX Diablo Dual GH is the Gregor Hilden signature overdrive and boost pedal, developed in collaboration with the respected blues guitarist and long-time Diablo user. Designed as a precisely adjustable 2-in-1 drive and boost, it delivers clear, warm, amp-like overdrive with the flexibility to suit clean amplifiers, vintage-inspired rigs and modern pedalboards alike. It is particularly well suited to blues, classic rock and expressive lead playing, while remaining adaptable enough for a wide range of guitars and pickup types.

Tonally, the OKKO FX Diablo Dual GH offers super clear and warm drive tones with a tight and punchy low end and strong, musical midrange presence. Unlike heavily compressed overdrives, it preserves note definition and string separation, even with neck humbuckers or higher output pickups. It pairs especially well with clean amps, adding depth and sustain without masking the natural voice of the amplifier. Chords remain open and articulate, and single notes carry a smooth, singing quality.

The feel is highly responsive and intuitive. The Dynamic control adjusts the internal operating voltage from approximately 6 to 18 volts, directly influencing headroom and compression. Lower settings introduce more sag and softness, while higher settings increase headroom, tighten the bass and add punch. This allows players to fine-tune the pedal’s response from smooth and forgiving to firm and immediate, depending on style and amplifier.

The control layout provides extensive tonal shaping while remaining practical. Each drive channel features its own Gain and Level controls, making it easy to preset two different gain stages and switch between them during performance. The Feed control shapes the low frequency content entering the gain stage, keeping the sound tight and transparent even with fuller-sounding pickups. Body adds low mids in the first gain stage for thicker, more singing lead tones. The three-position Input mini switch (normal, low gain, top boost) adjusts input sensitivity for optimal interaction with different guitars. The Mids control shifts the frequency focus of the tone circuit to better match different amplifiers and speaker voicings. The independent Boost section sits after the drive circuit, providing a master volume lift with a fixed gain structure and a dedicated Tone control to shape treble content for cutting or smoother lead sounds.

The OKKO FX Diablo Dual GH is built around a fully analogue circuit using high quality components throughout, delivering consistent tone, low noise operation and dependable performance. The independent post-drive boost increases flexibility without compromising signal integrity.

Housed in a robust all-metal enclosure, the pedal is designed for regular stage and studio use. It is hand built and wired in Germany, reflecting OKKO FX’s attention to detail. The gold enclosure with black graphics ensures clear control visibility while maintaining a distinctive yet understated appearance.

A bright LED power indicator clearly shows on and off status for confident use under stage lighting. True bypass switching helps preserve the integrity of the guitar’s core tone when the pedal is disengaged.

Top mounted jack sockets and DC input support efficient pedalboard layout, allowing closer pedal spacing and tidy cable routing. Powered by a standard 9V centre negative supply, the pedal also features internal voltage adjustment via the Dynamic control for expanded headroom options.

Backed by the manufacturer’s warranty, the OKKO FX Diablo Dual GH stands out as a highly adaptable, tone-focused overdrive and boost solution. With its dynamic feel, detailed EQ options and independent post-drive boost, it offers serious flexibility for players who value clarity, control and expressive response in their drive tones.

Controls

• GAIN (DRIVE A/B): Sets overdrive intensity from edge-of-breakup to singing sustain
• LEVEL (DRIVE A/B): Adjusts output volume for each drive channel
• DYN: Adjusts internal voltage 6–18V for headroom, punch and compression feel
• FEED: Controls low frequencies entering gain stage for tighter response
• BODY: Adds low mids in first gain stage for thicker lead tones
• INPUT: Three-position sensitivity switch for different pickup outputs
• MIDS: Shifts tone control frequency to match amp voicing
• BOOST: Master volume for independent post-drive boost circuit
• BOOST TONE: Adjusts treble content of boosted signal for clarity or smoothness

Components and Technical Specification

• Fully analogue dual overdrive and independent boost circuit
• Internal voltage control adjustable from approximately 6–18V
• Independent boost positioned after drive for volume lift
• True bypass switching for signal integrity
• High quality components throughout for low noise performance
• Hand built and wired construction in Germany
• All-metal enclosure for durability
• Top mounted input, output and DC sockets
• LED status indicator
• Powered by standard 9V centre negative supply (not included)
• Battery operation not supported
• Current draw measured with Truetone 1Spot mA Meter:
• Bypass: Approximately 2 mA
• Engaged (maximum): Approximately 5 mA

Current draw may vary slightly depending on control settings, circuit behaviour, and active features such as gain stages, modulation, filtering, or reverb tails. For best performance, use a high quality isolated power supply that matches the pedal’s current requirements. Always refer to the manufacturer’s recommendations, as incorrect powering may cause damage.

Enclosure Dimensions

• Depth: 117 mm / 4.5 in
• Width: 91 mm / 3.6 in
• Height: 40 mm / 1.5 in

Weight

• 429 g
• 0.95 lbs

Official UK Dealers

FX Pedal Planet Limited and FX Pedal Planet Online Store proudly serve as UK dealers for OKKO FX effects pedals. If we do not have the specific OKKO FX pedal you are looking for, please reach out to us via the contacts page, and will order it on our next stock order for you at the best price and customer service.

Buy Today and Pay Over Time

To give our customers flexibility and a pleasurable shopping experience, FX Pedal Planet Online Store accepts Klarna, Afterpay, Clearpay and Google Pay.

Klarna is a smooth and safe way to get what you want today, and pay over time. Afterpay allows customers to pay in four interest free instalments, budget your spending and earn rewards when you shop.

UK Deliveries

For our UK customers, we provide FREE 24 hour DHL tracked and signed delivery, ensuring your order arrives swiftly and securely.

International Deliveries

International deliveries are dispatched with DHL, ensuring fast shipping and efficient processing through customs.

For more information on deliveries and charges, please refer to our Deliveries and Charges.

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