Massive Audio 400 Watts RMS 4-Ohm 4-Channel Class D Amplifier

• Experience powerful audio performance with the Massive Audio PRIMO PX4, delivering up to 150W RMS per channel at 2-Ohm and 300W RMS to 2 channels at 4-Ohm.
• Enjoy seamless integration into any system with a built-in OEM line converter, adjustable input sensitivity, Auto Turn-On circuit, and 12V remote output.
• Fine-tune your sound with adjustable level and crossover controls, variable bass boost up to 12dB, and a frequency response range of 15Hz to 25kHz.
• Benefit from reliable performance with advanced 5-way protection circuitry, LED clipping indicators, and Mil-Spec double-sided PCBs with MOSFET high-grade switching devices.
• Stand out with a sleek aluminum finish, illuminated logo, and compliance with CTA 2006 standards for exceptional in-car audio quality.

Massive Audio 400 Watts RMS 4-Ohm 4-Channel Class D Amplifier

This Listing Includes:

• (1) Massive Audio 400 Watts RMS 4-Ohm 4-Channel Class D Amplifier

The Massive Audio PRIMO PX4 is a premium Class D multi-channel amplifier designed and engineered in the USA. It delivers up to 150W RMS per channel at 2℠or 300W RMS to 2 channels at 4â„, utilizing Mil-Spec PCBs and MOSFET high-grade switching devices for durability and performance. With features like a built-in OEM line converter, adjustable input sensitivity (up to 10V RMS), Auto Turn-On circuit, and 12V remote output, it seamlessly integrates into any system. The amp includes 5-way protection circuitry, LED clipping indicators, adjustable level and crossover controls, and a variable bass boost for rear channels. Exceeding CTA 2006 standards, the PX4 also offers a sleek aluminum finish with a glowing blue logo and compatibility with the optional 4 Farad Railcap Booster (RCP).

Key Features

• Extreme Power in a Small Footprint


• Full Range Digital


• Clip Front & Rear LED Indicators


• X1 / X10 Crossover Switching


• Low Distortion Full Band Width for Sound Quality Tuning


• Mil Spec Double Sided PCB design with SMD parts


• Built-in noise reduction circuitry


• Full MOSFET with High Grade switching devices


• Built-in Auto Sensing turn on function with LED Indicator (Hi-Inputs)


• 12V Remote Output for External Devices (Hi-Inputs)


• 0~12dB Variable Bass Boost


• Next Generation Advanced 5 Way Protection Circuitry


• Illuminated Logo


• Designed and Engineered in U.S.A.


• CTA 2006 Standard Compliant

Specifications

• 2 Ohm RMS: 150W x 4


• 4 Ohm RMS: 100W x 4


• 4 Ohm Bridged: 300W x 2


• Input Level: 0.4 ~ 10V (High or Low)


• Frequency Response: 15Hz ~ 25kHz


• Low Pass Frequency: 50Hz ~ 750Hz


• SubSonic (HPF): 20Hz ~ 6kHz


• THD at 4 Ohm Load 30% Rated Power: <0.03%


• Signal-to-Noise Ratio: >110dB


• Bass Boost: 0 ~ 12dB


• Minimum Load: 2 Ohm


• Gain Remote: n/a


• Dimensions: 8.34 in x 5.9 in x 1.9 in

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.