Sundown Horizon 600W RMS Class D 1 Ohm Monoblock Amplifier HZ600

• 600W RMS monoblock power at 1 ohm delivers strong, clean bass in a compact footprint
• Class D efficiency runs cooler while maximizing output for daily and factory-upgrade systems
• High-level inputs with DC Sense turn-on make installs easy with stock or aftermarket radios
• Built-in low pass and subsonic filters give precise bass tuning and speaker protection
• Four-way protection circuit plus wired remote bass knob for safe, convenient control

Sundown Horizon 600W RMS Class D 1 Ohm Monoblock Amplifier HZ600

This Listing Includes:

• (1) Horizon Series HZ-600 Class D Monoblock Amplifier


• (1) Wired Remote Bass Control

The HZ-600 from Sundown Audio is built for clean bass power in a compact footprint. Pushing up to 600 watts RMS at 1 ohm, this Class D monoblock is perfect for daily systems, tight installs, and factory integration builds that still demand real output.

High-level inputs with DC Sense turn-on make installation simple, even in vehicles without aftermarket head units. Built-in low pass and subsonic filters give you full control of your bass response, while the four-way protection circuit keeps everything running safely and reliably.

Small size, efficient power, and Sundown’s proven engineering make the HZ-600 a serious performer without wasted space or gimmicks.

Specifications:

• RMS Power @ 14.4V:


• 600W @ 1 Ohm


• 450W @ 2 Ohm


• 250W @ 4 Ohm


• Amplifier Class: D Monoblock


• Low Pass Filter: 50Hz to 250Hz (12dB/Oct)


• Subsonic Filter: 10Hz to 50Hz (12dB/Oct)


• Input Sensitivity: Up to 6V


• Signal-to-Noise Ratio: 95dB


• Operating Voltage: 10.5V to 16.5V


• Fuse Rating: 60A


• Protection: Thermal, Short Circuit, Over Voltage, DC Offset

Dimensions:

• Length: 9"


• Width: 4.63"


• Height: 2.2"


• Weight: 2.78 lbs

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.