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520 Watts RMS 1 Ohm 1 Ch Class D Monoblock Car Audio Amplifier Massive Audio

CASE QUANTITY: 4

PACKAGE WEIGHT: 4.5 LB

SKU MA-GT1
Save 20% Save 20%
Original price $224.99
Original price $224.99 - Original price $224.99
Original price $224.99
Current price $179.99
$179.99 - $179.99
Current price $179.99

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  • 520W RMS @ 1 Ohm: Delivers clean, powerful output with high efficiency in a compact Class D design
  • Massive Core Power Supply: Oversized toroids and transformers provide strong, stable current for demanding subs
  • Bass Remote & Clip Indicator: Easily control bass levels and monitor signal clipping in real-time
  • Rugged & Compact Build: Mil-Spec PCB, surface-mount components, and small footprint (7" x 6.9") for tight installs
  • 5-Way Protection Circuitry: Advanced safeguards for thermal, overload, short, voltage, and speaker protection


520 Watts RMS 1 Ohm 1 Ch Class D Monoblock Car Audio Amplifier Massive Audio


This listing includes:



  • (1) Massive Audio GT Series Monoblock Amplifier

  • (1) Bass Remote with Cable

  • (1) Mounting Hardware Kit

  • (1) User Manual


The GT Series High-Performance Amplifiers from Massive Audio are engineered to pair perfectly with GT Series Subwoofers, delivering clean, powerful sound in an ultra-compact chassis. This Class D Monoblock amplifier is stable at 1 Ohm, capable of producing up to 520W RMS, making it ideal for high-output subwoofer systems with tight space requirements.


Key Features:



  • 1 Ohm Stable Class D Design: Produces up to 520W RMS with high efficiency

  • "Massive Core" Power Supply: Oversized toroids deliver clean current with minimal distortion

  • Compact & Rugged: 7" x 6.9" footprint with aluminum housing and built-in heat management

  • Full MOSFET Circuitry: High-speed switching for stable and clean signal output

  • Auto Sensing Turn-On: Compatible with factory systems via RCA input

  • Clip LED Indicator: Prevents overdriving and distortion

  • Bass Remote Included: Control your bass levels on the fly


Specifications:



  • RMS @ 1 Ohm: 520 Watts

  • RMS @ 2 Ohm: 370 Watts

  • Peak Power: 1040 Watts

  • Minimum Impedance: 1 Ohm

  • Frequency Response: 50Hz - 250Hz

  • Low-Level Input Range: 300mV - 7V

  • Max RCA Input Voltage: 8V - 17V

  • Signal-to-Noise Ratio: 95dB

  • THD @ 4 Ohm: 0.07%

  • Variable Bass Boost: 0 - 12 dB

  • Recommended Fuse: 80A

  • Input Terminal Size: 4 AWG

  • Bass Remote: Included


Amplifier Dimensions:



  • Length: 7"

  • Height: 1.65"

  • Width: 6.9"


Package Dimensions:



  • Package Length: 9.5"

  • Package Width: 8.5"

  • Package Height: 3.5"

  • Package Weight: 4.5 lbs


Packed with next-generation tech, the GT Series amps feature Massive's exclusive "Massive Core" power supply with oversized toroids and transformers for maximum current flow.

Accepted Payment Methods at Big Jeff Audio

At Big Jeff Audio, we strive to make your shopping experience as smooth as possible by offering a wide variety of payment options. Below is a complete list of the payment methods we accept:

Credit and Debit Cards

  • Visa
  • Mastercard
  • American Express
  • Discover
  • Diners Club

Digital Wallets

  • Amazon Pay
  • Apple Pay
  • Meta Pay (formerly Facebook Pay)
  • Google Pay
  • Shop Pay
  • PayPal

International Payment Methods

  • Bancontact
  • iDEAL

Bank Transfers

  • Zelle

Financing Options

We also offer financing options to make purchasing easier. Learn more about our financing options here.

  • Klarna
  • Affirm
  • Sezzle
  • Snap
  • Acima
  • Tiptop

If you have any questions or need assistance with payments, feel free to reach out to us at info@bigjeffaudio.com or call us at 737-BIG-JEFF.

Shipping Options and Delivery Time

Do You Offer Expedited Shipping?

Yes! At checkout, you can select from different shipping options:

  • Standard Shipping: Free for orders over $100.
  • Expedited Shipping: Available at an additional cost, calculated based on the weight and destination of your order.

How Long Does Delivery Take?

  • Handling Time: Most orders are processed and shipped within 1 business day after receiving cleared payment. Occasionally, additional handling time may be required, but we’ll notify you if that’s the case.
  • Standard Shipping: Typically takes 3-5 business days, though delivery may be affected by extreme weather or holidays.

What Happens If My Package Is Undeliverable?

If your package is refused or marked undeliverable and returned to us by the carrier, you’ll need to pay the full shipping cost to have the package resent. Alternatively, we can refund your order, minus the cost of shipping.

Why Can’t I Track My Order?

If you're having trouble tracking your order:

  • Make sure you’ve received the shipping confirmation email with the tracking number.
  • Log into your account on our website and use the “Check Your Order Status” button.
  • If the issue persists, please refer to our detailed guide on tracking your order or contact our customer service team for further assistance.