Ground Zero GZRA 4HD Reference 4-Channel Car Amplifier High-End Open Box For Sale - New and Used

Audiophile Power – Ground Zero Reference Series
TheGround Zero GZRA 4HDis a high-end4-channel amplifierfrom theReference Series, built in Germany for uncompromising sound quality. With audiophile-grade Class AB circuitry, it delivers clean, dynamic power to front and rear speakers, or can be bridged for more advanced system designs.

✅Key Features:

• Model:GZRA 4HD(Reference Series)

• 4-Channel High-End Amplifier

• RMS Power (approx.):
  • 4 × 150W @ 4Ω
  • 4 × 250W @ 2Ω
  • 2 × 500W bridged @ 4Ω

• Audiophile-grade Class AB topology for warmth and precision

• Stable, low-distortion performance (<0.005% THD)

• Elegant Reference chassis with heavy-duty heatsink

• Designed in Germany for premium sound quality

🔧Specifications (approx.):

• RMS Output: 150W x 4 @ 4Ω | 250W x 4 @ 2Ω | 500W x 2 bridged @ 4Ω

• Frequency Response: 10Hz – 50kHz

• Signal-to-Noise Ratio: >100dB

• THD: <0.005%

• Dimensions: robust Reference-series chassis (see photos for scale)

🚚Shipping & Handling:

• Ships within 1 business day

• Professionally packed with tracking included

• Ships from the USA

🎯Why Choose the GZRA 4HD?
TheGround Zero GZRA 4HDis areference-grade amplifierbuilt for serious sound quality enthusiasts. Perfect for powering a full active speaker setup or high-end components, it deliversultra-clean output, tonal accuracy, and German-engineered reliability.

🔑 Keywords: Ground Zero, GZRA 4HD, Reference Series, 4-channel amplifier, SQ amplifier, high-end car audio, Class AB, German engineering, competition-grade.

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