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Car Audio DSPs

Explore our curated selection of Helix and Brax DSP processors, chosen for their tuning power, flexibility, and proven performance. These are the processors we trust for building precise, high-level systems without compromise.

Free US shipping over $99

Most orders ship within 24 hours

Made in the USA

Ensuring the best quality

Highest quality materials

Engineered for every vehicle

Easy installation

Soundproof your ride with ease

13 products
Helix Conductor with red lights on

Helix Conductor - Programable DSP Controller

(6)

$220.00 $250.00

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Sale
Helix Conductor Pro

Helix Conductor Pro

(1)

$279.00 $299.00

Sold out
Helix Bluetooth HD Streamer

Helix BT HD Streamer

(2)

$235.00 $325.00

Sale
Helix DSP Mini Mk2 6-channel car audio dsp

Helix DSP Mini Mk2 - 6 Channel DSP

(7)

$650.00 $700.00

Sale
Helix DSP.3S 8-channel car audio DSP

Helix DSP.3S - 8-Channel DSP

(1)

$799.00 $850.00

Sale
Helix DSP Pro Mk3 10-channel car audio DSP

Helix DSP Pro Mk3 - 10 Channel High Resolution DSP

(2)

$1,299.00 $1,350.00

Sale
Helix DSP Ultra S 12-channel car audio DSP

Helix DSP Ultra S - 12 Channel High Resolution DSP

(3)

$1,600.00

Helix Amplify 206 DSP

Helix Amplify 206 DSP

$999.00 $1,199.00

Sale
Helix P Six DSP Ultimate 6 channel car audio amplifier and 12 channel DSP

Helix P Six DSP Ultimate

(8)

$2,100.00

Helix Next V Eight DSP Ultimate DSP Amplifier

Helix NEXT V Eight DSP Ultimate

(4)

$1,999.00

Helix V Twelve Mk2 12-channel car audio amplifier and 14-channel DSP

Helix V Twelve DSP Mk2 - 12 Channel DSP Amplifier

(2)

$2,100.00

Helix V Eighteen 18-channel car audio amplifier and 20-channel DSP

Helix V Eighteen DSP - 18 Channel DSP Amplifier

$2,200.00 $2,400.00

Sale
Black Brax DSP with EISA award logo

Brax DSP - Ultra High-End 12-Channel Digital Signal Processor

(1)

$5,999.00 $8,000.00

Custom order only
Custom order only
rear of Porsche 911 GT3. Dark but dramatic lighting and highlights

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Your questions answered.

Every vehicle and goal set is different. Start with our sound deadening buyer’s guide to understand what each material does and where to use it. If you want a tailored plan, book our sound system design and installation consultation.


To help offset the cost, up to 40% of the consultation fee can be credited toward ResoNix product purchases made within 30 days.

Most people ask this because they are not sure what physically fits. Fitment varies by vehicle, trim, and where you plan to install it. Check available depth carefully and avoid interfering with moving parts, window tracks, airbags, and service access. As a general rule, choose the thickest that comfortably fits the space. See the product page for details.

We are building an ongoing fitment sheet from customer confirmations. If you can share what fit in your vehicle, please let us know to help others.

If an item is on backorder, the estimated restock date appears on its product page and is updated as we get new information.

Domestic orders that include a backordered item will ship in two parts: in‑stock items ship immediately, and the backordered items ship as soon as they arrive. For international orders, we currently ship when all items are in stock.

You will receive an order confirmation by email, then a tracking email once your order ships. If you need an update or anything looks off contact us with your order number.

We recommend high‑quality, proven DSPs matched to your system design and goals. If you want a custom recommendation, book our sound system design and installation consultation.

To help offset the cost, up to 40% of the consultation fee can be credited toward ResoNix product purchases made within 30 days.

Yes. Start with the sound deadening buyer’s guide for material selection and placement, and the sound deadening reference information & guide for deeper technical detail and best practices.

Please open every box and wrapper fully, since small items are sometimes packed inside larger kits for protection. If something still appears missing, reach out with your order number and what you are not seeing.
We will make it right. Contact us.

Yes, we ship worldwide. Available carrier options and rates are shown at checkout based on destination and weight. Transit times depend on the service you choose and customs processing. Express options are typically faster, while economy services take longer.

Full details are here: Returns and refunds policy.

If you need to cancel an order before it ships, contact us as soon as possible. If a return is needed, follow the instructions on that page so we can process it quickly.

Get in touch!

Need further guidance or have questions? See below for more ways to get in contact and view resources.

Contact

Email us (845) 737-6649 Chat with us

Resources

Sound deadening information guide Sound deadening buyers guide