Down4Sound Packages


(8 reviews) Write a Review

Out of stock



NOTE: Initial pricing is of amp only until you select your sub size and it will be calculated accordingly

1- Sundown SIA-3500D amp

1- Sundown D2 OHM Zv6 Series subwoofer (pick sub size 10”,12”,15” or 18”)

1- Free Certified Basshead 0g OFC AMP KIT

*Mandatory electrical upgrades to sustain this package. For example A Mechman high output alternator, big 3 kit, Xspower battery)







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Warranty Information

Warranty Information

Your new Down4Sound product is covered by 1 limited warranty if purchased from Down4Sound or an authorized Down4Sound dealer. This warranty does not cover improper installation, accidental damage, misuse, abuse, improper wiring, operation of unit outside of listed specifications, or any product that has been modified or repaired by anyone other than Down4Sound. Your warranty covers defects in materials and/or workmanship ONLY and is not an insurance policy. The warranty only covers the original owner of the amplifier.

All warranty returns must be accompanied by the original sales invoice or receipt. You must contact us to request an RMA number prior to sending any returns via the RMA request form on our website. You are responsible for the cost of shipping your product back to us for warranty examination. If your product is covered under warranty, shipping back to you will be at no charge to you – if your product is replaced/repaired outside of warranty you must pay for return shipping and repair bill prior returning of the product or if no defect is found you are required to pay for return shipping only.

At the sole discretion of Down4Sound your product will be either repaired or replaced when it is being covered under warranty. In the event of shipping damage due to improper packaging on products being returned to Down4Sound the customer is liable for the cost of all damages, necessary repairs, or replacement. Be sure to properly pack your return!

*  Extended additional warranty purchased on amplifiers take in affect from the date of purchase and must also be stated on orginal sales invoice or receipt. 



Refund/Return Policy:


Down4Sound - Hours of Operation

Monday 6am - 9pm PDT
Tuesday 6am - 9pm PDT
Wednesday 6am - 9pm PDT
Thursday 6am - 9pm PDT
Friday 6am - 9pm PDT
Saturday 8am - 4pm PDT
Sunday Closed
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8 Reviews

  • 5

    Great sub

    Posted by Reyes Reynoso on Jun 16, 2021

    Great subwoofer I love it

  • 5

    Hands down the best

    Posted by David Lanham on Apr 07, 2021

    Customer support and service are above and beyond. I would have to write a book to cover everything and not many have time for that. It's not easy getting a five-star rating out of me but hands down all day any day five stars!

  • 5

    Single sub super banging package

    Posted by Joshua Alan Bordelon on Feb 11, 2021

    Love the amp the zv-5 12 the install kit

  • 5


    Posted by William Drake on Nov 18, 2020

    Great product one of the best subs I've ever heard and that compact sfb 3000 watt amp is putting down some power

  • 5

    Single sub 18"

    Posted by Kevin Brunt on Apr 30, 2020

    Its a beast just got my box in too super pumped well worth it i love it cant wait tell my next 18" lol

  • 5

    Great sub

    Posted by Reynaldo Cortez on Nov 10, 2019

    Sub is great but haven't recieved amp yet :(

  • 5

    My wife is gonna kill me

    Posted by Darren Okerlund on Mar 05, 2019

    So I selected the 15" sub with this package once before and loved it so much I just had to order a 2nd one. My wife isn't so happy, BUT I SURE AM!!! LOL. Top notch customer service and extremely fast shipping. Thx JP and everyone at Down4sound!!

  • 4

    Zv5 15” 3000 watt package

    Posted by Scott Harris on Mar 03, 2019

    I gave a 4 star because I have not hooked everything up yet and have not got to hear or see it tear my car up yet once I get it hooked up and see how it sounds probably about 3 months from now I will ad the fifth star or not. As for the package it self it came really quick and very well packaged it looks great, a huge thank you to JP and his whole team at Down 4 sound for making this a very easy and quick process and having awesome service quality. Again thank you very much JP!!!

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