Products of the HYDROGEN series match with the demands of highly sophisticated customers.
Amazing performance, great sound quality and high SPL whenever required.
The subwoofers have been developed to handle a huge amount of input power reaching extremely high bass levels, to be used successfully even under competition conditions.
A matching 2-way component speaker system and a number of MINI amplifiers with compact dimensions for limited installation space complete this famous GROUND ZERO line-up.

Home Audio

HYDROGEN Amplifier
Especially for limited installation space, GROUND ZERO offers the HYDROGEN MINI full-range class D amplifiers. Meeting all requirements 2- and 4-channel models, a full-equipped 5-channel amplifier and last, not least, two powerful mono amplifiers in compact-sized, black-anodized aluminum heatsinks are available. Furthermore, the line includes a 4-channel and one mono amplifier for 24 V applications, as well.
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GZHA MINI ONE
Read more1-channel class D compact amplifier
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GZHA MINI ONE-K
Read more1-channel class D compact amplifier
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GZHA MINI ONE-K 24V
Read more1-channel class D compact amplifier for 24V use
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GZHA MINI TWO
Read more2-channel class D compact amplifier
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GZHA MINI FIVE
Read more5-channel class D compact amplifier
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GZHA MINI FOUR
Read more4-channel class D compact amplifier
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GZHA MINI FOUR 24V
Read more4-channel class D compact amplifier for 24V use

HYDROGEN DSP Products
Amplifiers with an ISO harness are easy to integrate into an existing audio system. There is no additional wiring needed. In case the car has a brand-specific connector, the car audio market offers a wide range of adapters to convert OEM head units to the ISO standard.

HYDROGEN Speaker Systems
For some years customers were missing matching loudspeaker components and systems belonging to the GROUND ZERO HYDROGEN series to be combined with its amplifiers and subwoofers. Based on a particularly designed aluminum cast basket the engineers have realized a powerful 6.5” midwoofer with a strong ferrite motor and oversized CCA voice coil. In combination with a vented silk dome tweeter equipped with a coupled chamber and a passive crossover, the new HYDROGEN series 2-way system is born for customers looking for an extraordinary performance. The loudspeakers are available separately for active setups, as well.

HYDROGEN Speaker Components
For some years customers were missing matching loudspeaker components and systems belonging to the GROUND ZERO HYDROGEN series to be combined with its amplifiers and subwoofers. Based on a particularly designed aluminum cast basket the engineers have realized a powerful 6.5” midwoofer with a strong ferrite motor and oversized CCA voice coil. In combination with a vented silk dome tweeter equipped with a coupled chamber and a passive crossover, the new HYDROGEN series 2-way system is born for customers looking for an extraordinary performance. The loudspeakers are available separately for active setups, as well.

Car Specific Products
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HYDROGEN Subwoofer
The HYDROGEN SPL subwoofer line-up contains a great variety of models in many different sizes for various demands. Massive aluminum cast baskets and a lot of further technologies enhance the reachable SPL level. For an individual setup each model is available in typical yellow or in green. GROUND ZERO even offers some models in pink color matching mainly female requests.
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GZHW 38XSPL-D1
Read more38 cm / 15″ high quality SPL subwoofer
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GZHW 38XSPL-D2
Read more38 cm / 15″ high quality SPL subwoofer
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GZHW 30XSPL-D1
Read more30 cm / 12″ high quality SPL subwoofer
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GZHW 30XSPL-D1 Green Edition
Read more30 cm / 12″ high quality SPL subwoofer
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GZHW 30XSPL-D2
Read more30 cm / 12″ high quality SPL subwoofer
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GZHW 10SPL-D2 FLAT
Read more25 cm / 10″ high quality flat SPL subwoofer
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GZHW 25XSPL-D1
Read more25 cm / 10″ high quality SPL subwoofer
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GZHW 25XSPL-D2
Read more25 cm / 10″ high quality SPL subwoofer
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GZHW 25SPL Green Edition
Read more25 cm / 10″ high quality SPL subwoofer
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GZHW 20XSPL-D1
Read more20 cm / 8″ high quality SPL subwoofer
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GZHW 20XSPL-D2
Read more20 cm / 8″ high quality SPL subwoofer
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GZHW 16SPL
Read more16 cm / 6.3″ high quality SPL subwoofer
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GZHW 16SPL Green Edition
Read more16 cm / 6.3″ high quality SPL subwoofer

HYDROGEN Subwoofer Boxes
Similar to the line of SPL models RADIOACTIVE subwoofers offer a number of special components. However, instead of highest SPL, the main focus is set on excellent low bass performance for everyday use.

Marine/ATV
Since listening to favorite music isn´t limited to cars, GROUND ZERO offers a particular speaker for environments with special requirements to the construction and water resistance.A sophisticated RADIOACTIVE MARINE coaxial speaker is available in white finish, suitable for places with high humidity such as bathrooms and pool areas or even for off-shore applications with occasionally appearing direct splashing water such as on outer decks or on leisure boats.

HYDROGEN Accessories
In this category there are crossovers for loudspeakers. These can be used to combine individual components into a passive system.

HYDROGEN Damping
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HYDROGEN Headphones
If you would like to enjoy the typical GROUND ZERO sound not only in your vehicle, you may choose one of the two headphones.
Both of them delivering a distinctive bass response and the dynamic sound character.