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The Ground Zero GZIA 100.2 is a compact 2-channel Class A/B car amplifier delivering 2 x 75W RMS at 4 ohms, 2 x 120W RMS at 2 ohms or 240W RMS bridged. It has a variable active crossover, bass boost and a high-level input with auto-on for straightforward installation.
For more power from the same Class A/B range, see the GZIA 200.2 2-channel and GZIA 135.4 4-channel amplifiers.
Key specifications
- Channels: 2, Class A/B
- Output power (4 ohms): 2 x 75W RMS
- Output power (2 ohms): 2 x 120W RMS
- Bridged (4 ohms): 240W RMS
- Max output (CEA-2006A): 300W
- Frequency response: 8 Hz - 28 kHz
- Filters: HPF and LPF, bass boost
- High-level input / auto-on: yes
- Dimensions (W x H x L): 168 x 49 x 175 mm
GZIA 100.2: 2-channel high quality class A/B amplifier
A compact 2-channel Class A/B amplifier delivering 240W bridged, with a built-in active crossover and a smart high-level input for straightforward installation.
Features
- 2-channel amplifier
- Class A/B technology for clean, efficient power
- Variable active crossover and bass boost for flexible tuning
- Stable power supply
- Large terminals for easy wiring
- Black anodised heatsink with Ground Zero lettering
- High-level input with auto-on function, so it connects directly to factory head units
Explore the full range in 2 Channel Amplifiers.
Specification
| Type | High power class A/B amplifier |
|---|---|
| Channels | 2 |
| Output Power (@ 4Ω) | 2x 75 Watts RMS |
| Output Power (@ 2Ω) | 2x 120 Watts RMS |
| Ouput power (@ 4Ω) bridged | 240 Watts RMS |
| Frequency Response | 8 Hz – 28 kHz |
| HPF / LPF / BPF | Yes / Yes / No |
| Bass Boost / Phase Shift | Yes / No |
| High-Level Input / Auto-on | Yes / Yes |
| Remote Control | Included |
| BIAS Setting | No |
| Linkmode | No |
| Dimensions | (w x h x L) 168 x 49 x 175 mm / 6.61″ x 1.93″ x 6.89″ |
More specs
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What's Included
- GZIA 100.2
Ground Zero
About the Ground Zero GZIA 100.2
From our tech experts at CEN
A 2-channel amplifier from Ground Zero, Class AB, rated at 240w.
Who it suits
Drivers who have upgraded their speakers and found the head unit cannot drive them properly. Ground Zero is a German brand with a strong following in competition and SPL circles, and the amplifiers reflect that.
Our tech experts advise
Matching matters more than headline watts, and gains want setting with a meter rather than by ear. It needs a fused feed from the battery on the correct cable gauge. Installation is priced per vehicle, so get in touch with your make, model and year and we will confirm what it needs. See car audio installation.
Explore the full Ground Zero range at CEN, with fast UK dispatch and expert advice from our Nottingham team. Shop all Ground Zero
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Frequently Asked Questions
Q: How do I choose the right amplifier for my speakers or subwoofer?
A: Match the amplifier's RMS output per channel to the RMS handling of your speakers or subwoofer at the same impedance. The Specification tab lists the power figures. If in doubt, contact CEN with your setup and we will recommend a match.
Q: What wiring do I need to install this amplifier?
A: You will need an amplifier wiring kit sized to the amplifier's power draw, typically including power and earth cable, a fuse, RCA leads and a remote wire. CEN stocks complete wiring kits, and the amplifier's fuse rating is the guide to the cable gauge required.
Q: What class of amplifier is this and does it matter?
A: Class D amplifiers are compact and efficient, ideal for subwoofers and modern installs. Class AB designs are traditionally favoured for outright sound quality on mid and high frequencies. The class is listed in the Specification tab where provided.
Q: Will an amplifier work with my factory head unit?
A: Yes, in most cases. If your head unit has no RCA outputs you will need a line output converter to feed the amplifier a clean signal. CEN stocks line output converters and can advise the right one for your vehicle.
Q: Can CEN install this amplifier?
A: Yes. CEN offers professional amplifier installation from our Nottingham premises, including secure mounting, wiring and setup. Contact us to book.
Q: How much power does the GZIA 100.2 deliver?
A: It delivers 2 x 75W RMS at 4 ohms, 2 x 120W RMS at 2 ohms, or 240W RMS bridged at 4 ohms, with 300W max output (CEA-2006A).
Q: Can the GZIA 100.2 be bridged to run a subwoofer?
A: Yes. Bridged at 4 ohms it delivers 240W RMS, and it has a variable low-pass filter and bass boost.
Q: How big is the GZIA 100.2?
A: It measures 168 x 49 x 175 mm (W x H x L).
