Cadence 1800 Watt 1-Ohm Monoblock Class D Car Audio Amplifier QRS1.1800D

• Powerful 1800W RMS Output – Delivers up to 1800 watts RMS at 1 ohm for thunderous, clean bass that dominates your sound system.
• High-Efficiency Class D Design – Advanced circuitry ensures maximum output with minimal distortion and heat, ideal for demanding subwoofer setups.
• Customizable Sound Control – Adjustable Bass Boost (0–15dB), LPF, HPF, and subsonic filter give you precise control over every low-frequency detail.
• Premium Build & Cooling – Black brushed aluminum body with nickel-plated terminals provides superior heat dissipation and long-lasting durability.
• Comprehensive Protection System – Microprocessor-monitored safety with external fuse design guards against thermal overload, short circuit, and power surges.

Cadence 1800 Watt 1-Ohm Monoblock Class D Car Audio Amplifier QRS1.1800D

This Listing Includes:

• (1) Quartz Core QRS1.1800D Monoblock Class D Car Amplifier

The Quartz Resonance Supreme QRS1.1800D is built for those who live for bass that hits hard and clean. This high-efficiency Class D monoblock amplifier delivers up to 1800 watts RMS at 1 ohm, unleashing massive power while maintaining clarity and control. Perfect for subwoofer-driven systems, it transforms your vehicle into a concert on wheels. With its sleek black brushed aluminum finish and nickel-plated terminals, it looks as good as it performs. Equipped with advanced microprocessor monitoring, adjustable filters, and external fuse configuration, the QRS1.1800D combines strength, precision, and safety in one compact powerhouse. Take control of your sound and experience the authority of Quartz Resonance Supreme.

Specifications:

• Amplifier Type: Class D


• Channel Configuration: Monoblock


• RMS Power @ 4 Ohms: 800 W x 1


• RMS Power @ 2 Ohms: 1200 W x 1


• RMS Power @ 1 Ohm: 1800 W x 1


• Frequency Response: 10 Hz - 250 Hz


• Input Sensitivity: 100 mV - 6 V


• Total Harmonic Distortion (T.H.D): < 0.05 %


• Signal-to-Noise Ratio: > 86 dB


• High-Pass Filter (HPF): 50 Hz - 50 Hz


• Low-Pass Filter (LPF): 50 Hz - 250 Hz


• Subsonic Filter: 10 Hz  - 50 Hz


• Bass Boost: 0 - 15 dB (40 Hz - 00 Hz)


• Phase Control: 0 - 180


• Input Type: RCA


• Fuse Rating: External Fuse


• Remote Level Control: Included


• Protection: Thermal, Short Circuit, Overload, Power Surge


• Construction: Black brushed aluminum heatsink with nickel-plated terminals


• Cooling System: Advanced microprocessor-controlled heat management

Dimensions:

• Length: 15.55 in (395 mm)


• Width: 7.56 in (192 mm)


• Height: 2.32 in (59 mm)


• Weight: 13 lbs


• Shipping Dimensions: 21 x 12 x 5 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.