Vizio SB3821-C6 Sound Bar Remote Control

$15.99

Vizio SB3821-C6 remote replacement manages volume, input selection, and audio modes for the 38-inch 2.1-channel sound bar and wireless subwoofer (part number XRS321).

30 in stock

SKU: VI-SB3821C6 Categories: ,
Description

About This Remote

Vizio built the SB3821-C6 as a 38-inch 2.1-channel sound bar paired with a wireless subwoofer, and this replacement remote control keeps full command of it. The layout feels familiar from the first press, with the main controls easy to find. No pairing or programming is needed, and the remote runs on 2 x AAA batteries.

Why buy this remote

  • Works across all four input types, covering HDMI ARC, optical, coaxial, and AUX switching.
  • Feels familiar from the first press, with the main controls easy to find so the main controls are easy to find immediately.
  • Includes Bluetooth streaming control alongside standard volume and power functions.

Compatible part numbers

Vizio SB3821-C6 Remote Specifications
Batteries2 x AAA
Part numberXRS321
Device TypeSound Bar
CompatibilityVizio SB3821-C6 Sound Bar
Warranty1 year

Vizio SB3821-C6 Sound Bar Specifications

System Type 2.1 Channel Sound Bar with Wireless Subwoofer
Sound Bar Size 38 inches
Sound Pressure Level 100 dB
Total Harmonic Distortion < 1%
Frequency Response 50 Hz, 19 kHz
HDMI 1x HDMI (ARC)
Optical Input 1x Optical (Toslink) Digital Audio In
Coaxial Input 1x Digital Coaxial Input
AUX Input 1x 3.5mm AUX Stereo Line In
USB Input 1x USB Input
Audio Technologies Dolby Digital, DTS TruSurround, DTS TruVolume
Soundbar Dimensions 38.0 in W x 3.0 in H x 3.0 in D
Subwoofer Dimensions 8.3 in W x 9.1 in H x 8.3 in D
Subwoofer Wireless Range Up to ~60 feet

Frequently asked questions

Will this remote control work with my Vizio SB3821-C6 sound bar without any setup?

Yes. The Vizio SB3821-C6 remote control is an infrared remote that responds immediately, with no code entry, programming, or pairing of any kind required.

Which inputs on the SB3821-C6 can I switch between using this remote?

This remote controls input selection across all four connections on the sound bar: HDMI ARC, optical (Toslink), digital coaxial, and the 3.5mm AUX stereo input.

Does this remote control the Bluetooth streaming function on the SB3821-C6?

Yes. The SB3821-C6 supports Bluetooth streaming, and this remote includes the controls needed to manage that function along with volume and power.

What part number is this replacement remote listed under?

This replacement is supplied under part number XRS321. That is the number to reference when confirming compatibility.

What batteries does this remote use?

It takes 2 x AAA batteries.

Additional information
Compatible BrandVizio
Device TypeSound Bar
Compatible ModelSB3821-C6
Power Source2 x AAA
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Shipping and Delivery

📦 Shipping Information

At USA Remotes, we’re committed to getting your replacement remote to you fast, free, and hassle-free — the same way your remote shows up ready to use, with no pairing or programming. Below you’ll find everything you need to know about how we ship, how long it takes, and what to do if anything goes sideways.


🚚 How much does shipping cost?

Shipping is free on every order — always. No minimum purchase, no handling fees, and no surprise charges at checkout. The price you see is the price you pay.


🏢 Where do you ship from?

Every order ships from our U.S. fulfillment center. We’re a U.S.-based company, so your remote never sits in customs or crawls in from overseas — it ships domestically and arrives quickly.


⏱️ When will my order ship?

We move fast. Orders placed before 2:00 PM Mountain Time (MT) on a business day ship the same day. Orders placed after the cutoff, on weekends, or on public holidays ship the next business day.

Business days are Monday through Friday, excluding national holidays.


🚀 How long will it take to arrive?

Once your order leaves our warehouse, most deliveries arrive within 2–4 business days. Paired with same-day processing, the majority of customers have their remote in hand within just a few days of ordering.

Delivery windows are estimates, not guarantees, and can run a little longer during weekends, holidays, peak seasons, or severe weather.


⚡ Do you offer faster (expedited) shipping?

We don’t currently sell a separate paid expedited option, but many orders go out via USPS Priority Mail, which typically reaches most U.S. addresses in 2–3 business days at no extra cost.

If you’re in a time-sensitive situation, email us at cs@usaremotes.com before you order and we’ll let you know what’s possible.


📬 Which carriers do you use?

Because remotes are small and light, the vast majority of orders ship via USPS (United States Postal Service) — usually USPS Ground Advantage or Priority Mail. For larger multi-remote orders we may use UPS or FedEx. The carrier is selected automatically to get your order to you as quickly and safely as possible.


🌎 Do you ship internationally?

Yes — we ship internationally. International orders typically arrive within 8–14 business days, depending on your destination and how long it spends in local customs. Carriers and shipping methods vary from country to country, so your order travels the most efficient route available.

Please note: international shipments may be subject to customs duties, taxes, or import fees charged by the destination country. These are set by your local customs authority and are the responsibility of the recipient.


🏝️ Do you ship to Alaska, Hawaii, U.S. territories, and military addresses?

Yes. We ship to all 50 states, U.S. territories (including Puerto Rico, Guam, and the U.S. Virgin Islands), and APO/FPO/DPO military addresses. Because these rely on USPS, transit times may run a bit longer than the standard 2–4 business days.


📮 Do you deliver to PO Boxes?

Absolutely. Since most orders ship via USPS, PO Box delivery is no problem. On the rare occasion an order ships via UPS or FedEx, we may reach out for a physical street address.


🔍 How do I track my order?

As soon as your order ships, we’ll email you a tracking number. You can also check your status anytime on our Track Your Order page. If you don’t see the email within a day of ordering, check your spam folder or get in touch.


📧 Why does my order say “Completed”?

When your order ships, you’ll get a confirmation email and your order status will change to “Completed.” That wording can be a little misleading — “Completed” simply means your order has shipped and left our warehouse, not that it’s already been delivered. Just use the tracking number in your email to follow it the rest of the way to your door.


📭 My tracking number isn’t updating — what should I do?

It’s normal for tracking to go quiet for a day or two, especially right after a label is created or over a weekend — carriers don’t scan a package at every stop. If there’s no movement for more than 3–4 business days, email us at cs@usaremotes.com and we’ll chase it down for you.


📦 My tracking says “Delivered” but I don’t have it

If the carrier marked your package delivered but it’s not in your hands:

  1. Check around your home — porch, mailbox, side door, garage, or wherever packages usually land.
  2. Ask household members or neighbors in case someone brought it in for you.
  3. Wait 24 hours — packages are sometimes scanned as delivered slightly before they actually arrive.

If it still hasn’t turned up:

  • Contact your local USPS office — they can pull GPS delivery confirmation showing exactly where the package was scanned.
  • Contact us at cs@usaremotes.com or (720) 204-8889. We’ll help open an investigation and retrieve the GPS scan data if needed.

Insurance: Our shipments include carrier insurance against loss or damage. We’ll guide you through the claim process with the carrier and stay on it until it’s resolved.


💔 My remote arrived damaged or doesn’t work

Every remote is tested and packed with care, but if yours shows up damaged or has a defect, you’re covered by our 1-year warranty and full compatibility guarantee. Just contact us at cs@usaremotes.com with your order number (and a quick photo if it’s physically damaged), and we’ll arrange a replacement or refund right away. Full details are in our Returns & Refunds policy.


🏠 What if I entered the wrong address?

If you spot a mistake in your shipping address, contact us immediately. If your order hasn’t shipped yet, we can fix it. If a package comes back to us as undeliverable (wrong or incomplete address), we’ll reach out to arrange a re-ship to the correct address.


🔀 Why did my order arrive in separate packages?

If you ordered more than one remote, your items may occasionally ship in separate packages or arrive on different days. Each shipment gets its own tracking number, so don’t worry if one lands before the other.


❄️ Holiday & weather delays

Carrier networks slow down during major holidays and severe weather. We still ship on our normal same-day schedule, but transit times may stretch during these periods — and once a package is with the carrier, those delays are outside our control.


✅ Our commitment to you

Your satisfaction is our priority. If anything goes wrong with your shipment, we’ll work directly with USPS or the relevant carrier to make it right and get your remote to you safely. Nobody should be stuck without a way to control their TV, sound bar, or AC.


📞 Still have questions?

We’re happy to help.

  • Email: cs@usaremotes.com
  • Phone: (720) 204-8889
  • We typically reply within one business day.