
The Metal Zone MT-2, a staple in the world of heavy guitar tones, is often compared to the legendary Boss HM-2, a pedal revered for its raw, chainsaw-like distortion that defined the Swedish death metal sound. While the MT-2 offers a more modern, scooped midrange character, many guitarists seek to emulate the HM-2's unique grit and midrange punch. Achieving an HM-2-like sound from a Metal Zone involves careful tweaking of its controls, such as boosting the mids, reducing the high-end harshness, and dialing in the right amount of gain to capture the HM-2's signature aggressive yet organic tone. Additionally, pairing the MT-2 with specific EQ pedals or amp settings can further bridge the gap, allowing players to harness the essence of the HM-2 while leveraging the Metal Zone's versatility.
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What You'll Learn
- EQ Adjustments: Cut mids, boost lows and highs for HM-2's raw, chainsaw tone
- Gain Settings: Lower gain slightly to reduce fizz, retain HM-2's grit
- Diode Clipping: Modify Metal Zone’s diodes to emulate HM-2’s asymmetric clipping
- External Mods: Add external filters or mods to replicate HM-2’s mid-scoop
- Cab Sim: Use HM-2-style cab IRs to enhance authenticity in the mix

EQ Adjustments: Cut mids, boost lows and highs for HM-2's raw, chainsaw tone
The HM-2's signature tone is a product of its aggressive mid-scoop, which creates a raw, chainsaw-like sound that cuts through the mix. To emulate this with the Metal Zone, EQ adjustments are crucial. Start by cutting the mid-frequencies, specifically between 500 Hz and 2 kHz, to reduce the boxy, muddy character that can dominate the Metal Zone's sound. This mid-scoop is essential for achieving the HM-2's distinctive clarity and aggression. Use the Metal Zone's 3-band EQ to dial in a precise cut, aiming for a reduction of around 6-8 dB in this range.
Boosting the lows and highs is the next critical step. Increase the low-end frequencies, around 80-100 Hz, by 3-5 dB to add thickness and weight to the tone, mimicking the HM-2's ability to sound massive without being boomy. Simultaneously, boost the high-end frequencies, around 4-6 kHz, by 4-6 dB to introduce the gritty, biting edge that defines the HM-2's chainsaw tone. Be cautious not to overdo the highs, as excessive brightness can make the sound harsh and fatiguing.
A practical tip is to use the Metal Zone's "Bottom" and "Treble" controls in conjunction with its parametric midrange EQ. Set the "Bottom" control to around 11-12 o'clock and the "Treble" to 1-2 o'clock as a starting point. Then, use the midrange EQ to fine-tune the scoop, ensuring the cut is deep enough to create separation between the lows and highs. This approach replicates the HM-2's frequency response while leveraging the Metal Zone's versatility.
Comparing the two pedals, the HM-2's fixed EQ curve is its strength, but the Metal Zone's adjustable parameters allow for a tailored approach. By strategically cutting mids and boosting lows and highs, you can achieve a tone that not only resembles the HM-2 but also retains the Metal Zone's dynamic range. Experiment with these adjustments in the context of your band mix or recording to ensure the tone translates effectively across different environments.
In conclusion, transforming the Metal Zone into an HM-2-like tone hinges on precise EQ manipulation. Cutting mids aggressively, boosting lows for thickness, and adding controlled high-end bite creates the raw, chainsaw sound that defines the HM-2. This method not only honors the classic pedal's legacy but also showcases the Metal Zone's potential as a versatile tool for modern metal tones.
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Gain Settings: Lower gain slightly to reduce fizz, retain HM-2's grit
The Metal Zone's notorious fizz often stems from its aggressive gain staging. While the HM-2 is known for its raw, chainsaw-like grind, it achieves this without the harsh, brittle edge that can plague its digital successor. The key lies in understanding how gain interacts with the pedal's tonal architecture.
High gain settings on the Metal Zone push the circuit into extreme saturation, amplifying high-frequency harmonics and creating that signature "fizz." The HM-2, on the other hand, utilizes a different clipping architecture that emphasizes midrange grind while naturally rolling off excessive treble.
To emulate this, start by reducing the Metal Zone's gain knob by 10-15%. This slight decrease will immediately tame the fizz, allowing the core distortion character to shine through. Think of it as dialing back the intensity of a flame – you still want the heat, but without the risk of burning.
This adjustment doesn't mean sacrificing the HM-2's signature grit. The Metal Zone's inherent midrange bump, when combined with the reduced gain, can still deliver that signature chainsaw tone. Experiment with the EQ controls to further sculpt the sound, emphasizing the mids and slightly cutting the highs to taste.
Remember, the goal isn't to completely transform the Metal Zone into an HM-2 clone. It's about finding a balance where the Metal Zone's strengths – its versatility and accessibility – meet the HM-2's raw, unapologetic character. By subtly adjusting the gain, you can unlock a new dimension to the Metal Zone, one that pays homage to the classic Swedish death metal sound while retaining its own unique voice.
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$24.9

Diode Clipping: Modify Metal Zone’s diodes to emulate HM-2’s asymmetric clipping
The Metal Zone's symmetric diode clipping is a key factor in its distinct sound, but to emulate the HM-2's signature tone, we need to introduce asymmetry. This involves modifying the Metal Zone's diode configuration to mimic the HM-2's unique clipping characteristics. By doing so, we can achieve a more aggressive, chainsaw-like distortion that defined the Swedish death metal sound.
To begin, let's examine the diode clipping circuits in both pedals. The HM-2 utilizes a pair of silicon diodes (1N914) in an asymmetric configuration, where one diode is forward-biased and the other is reverse-biased. This creates an uneven clipping characteristic, resulting in a more complex and harmonically rich distortion. In contrast, the Metal Zone employs a symmetric diode clipping circuit with two pairs of silicon diodes (BAT41) in an anti-parallel configuration, producing a more balanced and compressed sound.
Modifying the Metal Zone's Diodes:
To emulate the HM-2's asymmetric clipping, we can replace the Metal Zone's BAT41 diodes with a combination of 1N914 diodes. Here's a step-by-step guide:
- Desolder the original diodes: Carefully remove the BAT41 diodes from the Metal Zone's circuit board.
- Install the new diodes: Solder two 1N914 diodes in an asymmetric configuration, with one diode forward-biased and the other reverse-biased. A common configuration is to use a 1N914 in series with a 1N4148 (a fast-switching diode) for the forward-biased diode, and a single 1N914 for the reverse-biased diode.
- Adjust the bias voltage: The HM-2's asymmetric clipping is influenced by the bias voltage applied to the diodes. Experiment with different resistor values (e.g., 10kΩ to 100kΩ) to adjust the bias voltage and fine-tune the clipping characteristics.
Cautions and Considerations:
When modifying the Metal Zone's diode clipping circuit, keep in mind that:
- Component tolerances matter: Use high-quality components and ensure precise soldering to minimize signal loss and distortion.
- Experimentation is key: The optimal diode configuration and bias voltage may vary depending on personal preference and the specific Metal Zone unit being modified.
- Reversibility is important: Consider using socketed components or documenting the original circuit to allow for easy reversal if needed.
By modifying the Metal Zone's diode clipping circuit to emulate the HM-2's asymmetric configuration, we can achieve a significant improvement in tone and character. This modification highlights the importance of diode clipping in shaping a pedal's sound and demonstrates the potential for customization and experimentation in pedal design. With careful planning and execution, it's possible to transform the Metal Zone into a formidable HM-2-style distortion pedal, capable of delivering the aggressive, chainsaw-like tone that defined an era of extreme metal.
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External Mods: Add external filters or mods to replicate HM-2’s mid-scoop
The HM-2's signature mid-scoop is a result of its passive filter design, which attenuates frequencies around 500-1000 Hz. To replicate this using external mods with the Metal Zone, you'll need to introduce a similar filtering mechanism. One effective approach is to use a parametric equalizer (EQ) pedal, such as the MXR M108S or Boss GE-7, to create a narrow notch filter. Set the EQ's frequency to around 750 Hz, with a Q-factor of 2-3, and reduce the gain by 6-8 dB. This will carve out the midrange, creating the characteristic "scooped" sound that defines the HM-2's tone.
A more cost-effective solution is to use a graphic EQ pedal, like the Behringer EQ700 or Boss GE-7, to manually cut the midrange frequencies. Identify the frequency bands corresponding to 500-1000 Hz and reduce their levels by 6-10 dB. While this method may not provide the same precision as a parametric EQ, it can still yield convincing results when combined with the Metal Zone's inherent tonal characteristics. Experiment with different frequency bands and cut depths to find the sweet spot that best replicates the HM-2's mid-scoop.
For a more permanent and tailored solution, consider modifying the Metal Zone itself by adding an external filter circuit. This involves soldering a passive filter, consisting of resistors and capacitors, to the pedal's circuit board. A popular design is the "Anti-Mid" circuit, which uses a combination of series and parallel resistors to create a notch filter. Schematics and instructions for this mod can be found online, but it requires a moderate level of electronics knowledge and soldering skills. Be cautious when attempting this mod, as incorrect implementation can damage the pedal or compromise its functionality.
When using external filters or mods to replicate the HM-2's mid-scoop, it's essential to consider the overall tonal balance. The Metal Zone's aggressive character can sometimes clash with the scooped midrange, resulting in a thin or harsh sound. To counteract this, try boosting the low-end frequencies (below 200 Hz) and high-end frequencies (above 2 kHz) using the Metal Zone's EQ controls or an additional EQ pedal. This will help restore the tonal balance and create a more convincing HM-2-style tone. Remember that the goal is not to perfectly clone the HM-2, but to capture its essence while leveraging the Metal Zone's unique strengths.
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Cab Sim: Use HM-2-style cab IRs to enhance authenticity in the mix
The HM-2's signature sound is deeply intertwined with its cabinet simulation, a dark, mid-scooped character that shaped the era's metal tone. Recreating this with the Metal Zone requires more than EQ tweaks—it demands the right cab IRs. HM-2-style impulse responses (IRs) are designed to emulate the tight low end, aggressive mids, and slightly rolled-off highs of the original Boss pedal's internal cab sim. By loading these IRs into your cab sim plugin, you bridge the sonic gap between the two pedals, adding the missing link to your Metal Zone's signal chain.
Selecting the right HM-2-style IR is crucial. Look for IRs captured from 4x12 cabinets loaded with vintage 30-style speakers, as these were the go-to choice for the HM-2's target audience. Avoid modern, bright IRs—they'll clash with the Metal Zone's inherent mid-focused character. Aim for IRs with a frequency response peaking around 100-200Hz for that signature tightness, a pronounced mid-scoop around 500-1kHz, and a gentle high-end roll-off above 5kHz. This combination will help the Metal Zone's distortion sit in the mix like its Swedish counterpart.
Implementation requires careful balancing. Start by placing your cab sim plugin after the Metal Zone in your chain. Set the IR's mix level to 100% initially, then dial it back to 70-80% if the tone becomes too boxy or artificial. Use your DAW's high-pass filter (around 40-60Hz) to remove sub-bass rumble, a common issue with heavy distortion. If the mix feels too dark, add a subtle EQ boost at 2-3kHz to reintroduce presence without losing the HM-2's vintage vibe.
A/B testing is essential. Compare your Metal Zone + HM-2 IR chain to actual HM-2 recordings, focusing on how the low end punches, the mids cut through palm-muted riffs, and the highs retain clarity without harshness. Adjust the IR's position in the mix until the Metal Zone's rawness blends seamlessly with the HM-2's organic grit. Remember: the goal isn't perfection, but capturing the essence of the HM-2's cab sim within the Metal Zone's framework.
Finally, consider the context of your mix. HM-2-style IRs work best in dense metal productions where guitar tracks need to cut through without dominating. If your mix already has prominent bass or keys, reduce the IR's low-end content slightly to avoid muddiness. Conversely, in sparse arrangements, a fuller IR profile can add weight to the Metal Zone's distortion. Experimentation is key—treat these IRs as creative tools, not rigid rules, to achieve the HM-2's iconic sound with your Metal Zone.
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Frequently asked questions
The HM-2 has a mid-scooped, chainsaw-like tone with a focus on low mids and highs, while the MT-2 has a more mid-focused, modern metal sound. The HM-2 also uses a different clipping circuit and has a simpler EQ structure.
You can reduce the mid-frequency boost on the MT-2 by adjusting the internal trim pots or using an external EQ pedal to scoop the mids. Additionally, lowering the gain and increasing the bass and treble can help mimic the HM-2's signature tone.
Start with the gain around 9-10 o'clock, mids at minimum, bass at maximum, and treble around 2-3 o'clock. Adjust the drive to taste, but keep it lower than typical MT-2 settings for a more HM-2-like character.
Yes, use an EQ pedal to scoop the mids aggressively, boost the lows and highs, and slightly reduce the overall gain. This will help emulate the HM-2's mid-scooped, chainsaw tone while using the MT-2 as the core distortion.











































