Ground Zero GZPA 4SQ 4-channel amplifier

Max, Mikael and 53k+ customers already with Masori sound upgrade

Ground Zero GZPA 4SQ 4-channel amplifier

Power: 4 x 125 WRMS at 4 ohms, 4 x 225 WRMS at 2 ohms.
Variable active crossover, bypass function, MOSFET technology.
Frequency response: 10 Hz – 50 kHz, dimensions: 222 x 420 x 60.5 mm.
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€1.449,00

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Ground ZeroGZPA 2SQ

Ground ZeroGZPA Reference 2PURE

GZPA 4SQ by Ground Zero

The GZPA 4SQ is a 4-channel high-end amplifier from Ground Zero. With its MOSFET technology and high-quality components, this amplifier not only delivers top-notch performance but also unique sound quality. Innovative features such as a variable active crossover with bypass function and a variable BIAS setting set new standards in the audio industry. Furthermore, its efficient, illuminated heat sink ensures optimal heat dissipation. The GZPA 4SQ is ideal for high resolution audio, making it the perfect choice for discerning music lovers.

HighLights

High-End 4-Channel Amplifier
MOSFET Technology
Variable active crossover with bypass function
Variable BIAS setting
High-quality component quality
Solid Connections
Efficient heat sink with illuminated Ground Zero lettering
Suitable for High Resolution Audio

Features

4-Channel High-End SQ Class AB Amplifier
Performance:

4 x 125 WRMS @ 4 ohm
4 x 225 WRMS @ 2 ohm
4 x 350 WRMS @ 1 ohm

Frequency response: 10 Hz – 50 kHz
Dimensions (W x L x H): 222 x 420 x 60.5 mm

Frequent questions about GZPA 4SQ

Wie viel Leistung bietet der Ground Zero GZPA 4SQ Verstärker?

The Ground Zero GZPA 4SQ is a high-end 4-channel amplifier with impressive power. It delivers 4 x 125 WRMS at 4 Ohms, 4 x 225 WRMS at 2 Ohms, and an impressive 4 x 350 WRMS at 1 Ohm. These power specifications make it ideal for demanding applications and provide a solid foundation for high-resolution audio experiences. The power levels are a testament to its MOSFET technology and high-quality components, which ensure consistently high performance. Especially if you place a high value on sound fidelity and performance, you will appreciate the capabilities of this amplifier.

Was macht die MOSFET-Technologie im GZPA 4SQ Verstärker besonders?

The MOSFET technology in the GZPA 4SQ from Ground Zero is characterized by high efficiency and excellent sound quality. MOSFETs (Metal-Oxide-Semiconductor Field-Effect Transistors) provide a fast response time and high flexibility in power transmission. This results in a clear and detailed sound image, which is particularly noticeable with High-Resolution Audio. Through this technology, the amplifier achieves an optimal balance between power and precision, allowing your music to be reproduced authentically and vividly. MOSFETs are also known for their durability and stability, ensuring long-lasting and reliable performance.

Wie funktioniert die variable Aktivweiche mit Bypass-Funktion?

The variable active crossover in the GZPA 4SQ allows you to flexibly adjust the frequency ranges, optimizing the sound reproduction for your speakers. With the bypass function, you can completely bypass the crossover, which is particularly useful for advanced audio applications or when using external crossovers. This functionality enables you to fully exploit the sound potential of your speakers. By finely tuning the frequencies, you achieve an optimal sound balance while reducing distortions. Thus, the active crossover offers a high degree of flexibility and control for different audio setups.

Warum ist die BIAS-Einstellung im Verstärker wichtig?

The variable BIAS setting in the GZPA 4SQ plays a crucial role in the sound quality of the amplifier. By adjusting the quiescent current, you can influence the gain characteristic, which has a direct effect on the sound. A higher BIAS setting results in a warmer sound, but at the cost of increased heat generation. However, the efficient, illuminated heat sink helps to effectively dissipate the generated heat. This way, you can customize the amplifier to your acoustic preferences without compromising reliability.

Welche Abmessungen hat der Ground Zero GZPA 4SQ?

The GZPA 4SQ has compact dimensions that make it easy to place in various types of vehicles. Its measurements are 222 mm in width, 420 mm in length, and 60.5 mm in height. This size allows for flexible installation in the vehicle without taking up too much space. Especially in conjunction with the efficient heat sink, which ensures effective heat dissipation, it provides optimal conditions for integration into your audio system. When installing, it is important to ensure that there is sufficient space for heat dissipation.

Ist der GZPA 4SQ für High Resolution Audio geeignet?

Yes, the Ground Zero GZPA 4SQ is optimally designed for High Resolution Audio. Its frequency response of 10 Hz to 50 kHz allows for detailed and precise reproduction of even the highest audio details. The quality of the components used and the MOSFET technology significantly contribute to the accurate reproduction of even the finest sound nuances. High Resolution Audio requires precise signal fidelity and dynamics, which the GZPA 4SQ excellently meets through its technical specifications and construction. Thus, it offers an exceptional listening experience for discerning listeners.

Welche technischen Merkmale zeichnen den Ground Zero GZPA 4SQ aus?

The high-end amplifier GZPA 4SQ from Ground Zero impresses with innovative technical features such as a variable active crossover with bypass function, an adjustable BIAS setting, and an efficient heat sink. Its MOFSET technology allows for high power outputs of up to 350 WRMS per channel at 1 ohm. As a Class AB amplifier, it offers an excellent frequency response from 10 Hz to 50 kHz, and high-quality components ensure lasting performance. This combination of advanced features and solid construction makes it the ideal choice for ambitious audio installations.

Wie installiert man den GZPA 4SQ im Fahrzeug?

The installation of the Ground Zero GZPA 4SQ in the vehicle requires consideration of its physical dimensions and the layout of the vehicle. With a width of 222 mm, a length of 420 mm, and a height of 60.5 mm, the amplifier can be space-savingly accommodated in most vehicles. Ensure that there is enough space for heat dissipation from the heat sink to avoid overheating. A stable mounting is recommended to minimize vibrations while ensuring a flawless electrical connection.

Kann der GZPA 4SQ mit verschiedenen Automarken kompatibel sein?

The Ground Zero GZPA 4SQ is compatible with numerous car brands and models due to its universal dimensions and electrical specifications. The adaptability of its measurements of 222 x 420 x 60.5 mm allows for integration into various vehicles without significantly affecting the spatial conditions. Ensure that adequate ventilation is guaranteed to maintain the effectiveness of the cooling system. Compatibility regarding electrical connections should be checked, but it is generally unproblematic with most standard connections.

Was sind die Vorteile der beleuchteten Kühlkörper im GZPA 4SQ?

The illuminated heat sinks of the GZPA 4SQ offer both functional and aesthetic advantages. Functionally, they improve heat dissipation, which is crucial for longevity and consistent performance. The illuminated surface helps keep the amplifier's temperature in the optimal range even during long listening sessions. Additionally, the illuminated Ground Zero logo gives the amplifier an attractive design that particularly stands out when opening the trunk or in installations where the amplifier is visible. Optimally designed to combine lasting performance and aesthetics.

Herstellerinformation/verantwortliche Person

Ground Zero GmbH
Erlenweg 25
85658 Egmating, Germany

Tel +49 (0)8095 873 830

E-Mail: info@ground-zero-audio.com

Let customers speak for us

from 9062 reviews

Franco

Super guter Subwoofer

Super Subwoofer mit extrem tiefem Bass. Die Kabel sind dick und hochwertig verarbeitet. Es gibt nichts zu beanstanden. Absolut empfehlenswert.

CBP1000

12/09/2025

Jean François Tedesco

Alpine tube 12 bazooka , Un sacré caisson de basses ,

Un sacré caisson de basses , j'ai eu un 46 cm killer 454 de l'époque année 90 , qui tapait vraiment bien , mais ce tube est bien plus fort et plus ample, toutes les basses passent sans problème, avec une télécommande à réglage multiples taramps eq bass , et un ampli Machete de masori , le couple est parfait, personnellement j'en ai deux tubes et ça donne énormément, avec l'ampli 2 x 530 en 4 ohms . Parfois le plus simple est bien meilleur et plus durable .

SWT-12S4

11/29/2025

Bartosz Erber

X-10 v3 d2

Hallo. Sehr freundlicher Kundenservice und schnelle Auftragsabwicklung. Der Lautsprecher ist brandneu und unbenutzt. Ich habe ihn vor einiger Zeit gekauft, aber erst kürzlich das Gehäuse fertiggestellt. Die Parameter entsprechen den Herstellerangaben: 42,5 Liter Nettovolumen, abgestimmt auf 32 Hz und 21 mm starkes Sperrholz. Ich hatte noch nie einen 10-Zoll-Lautsprecher und wusste nicht, was mich erwartet, aber das Ergebnis hat meine kühnsten Erwartungen übertroffen. Der Bass aus einem so kleinen Lautsprecher in einem so kleinen Gehäuse ist einfach unglaublich. Um den X-10 zu kaufen, habe ich meinen DD 712f in einem 70-Liter-Gehäuse verkauft, und der war ein Volltreffer. Der Sundown ist in jeder Hinsicht besser. Ich kann diesen Lautsprecher und den Händler, bei dem ich ihn gekauft habe, wärmstens empfehlen. Beste Grüße.

X10 v3

11/18/2025

tatazz

Est arrivé à la maison très rapidement

Est arrivé à la maison très rapidement 👌🏽

Hydrogen GZHW 25XSPL

11/13/2025

Anonym

.

Geht echt gut und leicht zum einstellen

GPX2200.1D

11/12/2025

Georges, Alexander, Vainohoarii NAGLE

Très satisfaisant.

Bonjour, je reçu le colis bien emballé.
Je recommande vivement, la livraison est gratuite et rapide, je recommanderai sûrement encore chez Masori.

RS-YS12

11/10/2025

SPYRIDON D.

Bought again

Bought again. Great price, fast delivery, nice !

Mille Pro MP 165.3

11/06/2025

Arthur Mol

Perfect sound, I bough 2 pairs for the door and

Perfect sound, I bough 2 pairs for the door and the difference between these and the stock ones are huge

Voce AV 6.5

11/03/2025

christopher Martinez

Deaf bonce

Très bonne qualité
Envoie rapide et soigné
Je recommande

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Tolles Produkt. Sehr hochwertig und passgenau. Passt in die hinteren Türen von meinem Passat B8 2019 perfekt.

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Tomáš hokuf

Nice

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Michael Steffan

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10/28/2025

Michael Steffan

Preis/Leistung Qualität

Preis/Leistung Qualität top!

Zeus ZS42

10/28/2025

Anonym

Top Upgrade für Canton System

Ich habe den Woofer in meinem Skoda Octavia 3 mit Canton Soundsystem eingebaut.
Der Einbau war Plug & Play, alles passt perfekt ohne Anpassungen.
Im Vergleich zum originalen Canton Subwoofer spielt dieser deutlich stärker, präziser und mit mehr Druck.
Ich kann den Woofer jedem empfehlen, der mehr Bass aus dem Canton-System herausholen möchte – lohnt sich absolut!

CO06 D8 EVO

10/27/2025