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Sundown Audio

Sundown Audio SFB-600D Class-D Monoblock Amplifier

  • Based on 81 reviews
Condition: New
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$139.99 Why this price?
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This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2026

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Availability: Only 4 left in stock, order soon!
Fulfilled by Pro Audio Center (Authorized Dealer)
Arrives Friday, Dec 26
Order within 5 hours and 53 minutes
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Features

  • 2 Years Warranty

Description

SFB-600D | Sundown Audio Class D Monoblock Amplifier FEATURES: Digital Class-D Mono Block Amplifier Dual MOS-FET PWM Power Supply 1 Ohm Stable Load 12 dB/Octave – Variable Low Pass Filter 12 dB/Octave – Variable High Pass Filter 9 dB/Octave – Variable Bass Boost 4 Way Protection Ciruit (Thermal, Voltage, Speaker Short, DC Offset) Wired Remote Control with Clipping Indicator SPECIFICATIONS (Tested @ 14.4v): 1 ohm Mono RMS - 600W 2 ohm Mono RMS - 350W 4 ohm Mono RMS - 250W Recommended Fuse Rating - 60A Low Pass Filter (Variable) - 80Hz-20kHz High Pass Filter (Variable) - 15Hz-1kHz Bass Boost @ 50Hz - 0-12dB Input Sensitivity - 5V Max S/N Ratio - 86dB Working Voltage - 10.5v-15.5v Dimensions (inch) - 7.25″ x 5.00″ x 2.50″

Voltage: 15.5 Volts


Manufacturer: Sundown Audio


Maximum Supply Voltage: 15.5 Volts


Minimum Supply Voltage: 10.5 Volts


Mounting Type: Surface Mount


Voltage: ‎15.5 Volts


Manufacturer: ‎Sundown Audio


Maximum Supply Voltage: ‎15.5 Volts


Minimum Supply Voltage: ‎10.5 Volts


Mounting Type: ‎Surface Mount


Brand: ‎Sundown Audio


Number of Channels: ‎1


Output Power: ‎600 Watts


Package Type Name: ‎box


Specification Met: ‎Basic Safety Standards


Item Weight: ‎3.45 pounds


Package Dimensions: ‎9.76 x 7.32 x 4.69 inches


Item model number: ‎SFB-600D


Manufacturer Part Number: ‎SFB-600D


Date First Available: March 12, 2021


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Dec 26

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews

    • Giddy up
Like a reaper. Tiny pepper but packs a punch. This with a ct 12 at one ohm and she gives me what I want. So small can put so many places. Definitely recommend
Reviewed in the United States on May 27, 2025 by eric h. kiger
    • It lasts
Had this in two different builds and run it pretty much every day for almost three years great amp for the price
Reviewed in the United States on October 12, 2025 by ethan k.
    • Tiny Amp Great Power
It puts out awesome power, bass knob with the clip and power lights, and sounds great. Thanks Sundown Audio
Reviewed in the United States on February 29, 2024 by Blaine K.
    • Big power small package...to bad it's not a heater
Performance as right at 600rms so that's a positive...only downfall is runs hot asf @ 2 or 1ohm
Reviewed in the United States on April 25, 2021 by ThatOneGuy
    • Works as expected.
Bought this amp cause my last one blew, this amp comes with a clip light on the bass knob so you won’t blow your amp. (Just get the 1000 watt version of the amp.)
Reviewed in the United States on August 11, 2024 by Caleb Wilburn
    • Excellent amplifier
If you want a beast of an Amp for a great price,I highly recommend this one
Reviewed in the United States on August 9, 2024 by Victor Zamora
    • Powerhouse
I love this little powerhouse, it kicks without breaking a sweat. Highly underrated by the manufacturer so don’t blow your subs. I’m using this amp with one Skar Audio 600 rms sub @1ohm and it’s turned down and it’s beating the hell out of the sub and has not gotten hot yet.
Reviewed in the United States on October 17, 2022 by BRIAN M
    • Somebody is lying on this amp
Somebody is lying on the description of this app it is entirely too weak to push two bottom grade 10's without going in clip mode constantly I thought this was a good amp by the brand name and it's turned down almost to nothing but it constantly clips with a waste of money
Reviewed in the United States on August 22, 2023 by Thaddeus Lencrerot

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