The SMD Distortion Detector Plus (DD-1+) is a powerful tool designed to meet the needs of audio installers. Its primary purpose is to ensure that the gain of an audio amplifier is correctly set to match the output level of the source unit, with precision and speed. Additionally, it can be used to detect distortion in the audio signal caused by poorly designed or malfunctioning audio equipment.

One of the biggest advantages of the DD-1+ over the original DD-1+ is the ability to set audio system gain overlap continuously. With a range of 0.0dB to 15.0dB in 0.1dB steps, installers have more flexibility in achieving optimal audio performance. The tool can also check the gain overlap of an audio system without making any adjustments to the existing settings, ensuring that the system remains unchanged after installation. Furthermore, it verifies that the gain overlap hasn't been tampered with, providing peace of mind for both installers and customers.

The DD-1+ features a patent-pending Distortion Detection system, along with a digital micro-controller and proprietary firmware, delivering accurate and reliable results. With a maximum input of 200V, which is the same as the DD-1 HV, it can handle high voltage levels without compromising performance. Additionally, it incorporates a quasi-RMS voltmeter that can detect clipping at any frequency, enabling installers to identify and address audio distortions effectively.

The package includes the Distortion Detector PLUS (DD-1+), a protective silicon rubber boot that ensures durability, a calibrated test tone CD for accurate measurement, a harness for easy connection, and a comprehensive manual to guide users through the setup process. Additionally, the pride of ownership is included, knowing that you possess a precision piece of equipment that will provide reliable service for many years if treated properly.

With a distortion detection trigger level of over 1.0% Harmonic Distortion and a guaranteed operating range of 1.2Vrms to 200Vrms (equivalent to 40,000 Watts at 1ohm), the DD-1+ offers exceptional performance. It features an auto-shut off timer that activates 8-10 minutes after the ON button is pressed, conserving battery life. Furthermore, it includes a low battery LED indicator that triggers when the battery voltage drops below 6.5Vdc, ensuring uninterrupted usage.

The DD-1+ comes in a compact shipping box measuring 9 x 6 x 2 inches and weighing 2lbs, making it convenient to transport and store. For detailed instructions and further information, refer to the owner's manual and the DD-1+ Test Disc Read Me documents available in PDF format.

Choose the SMD Distortion Detector Plus (DD-1+) - DLR, a reliable and efficient tool that will assist you in achieving optimum audio performance, detecting distortion, and delivering an exceptional audio experience.

What is the difference between this and the original DD-1+?

• Sets audio system gain overlap, continuously variable from 0.0dB - 15.0dB in 0.1dB steps
• Checks gain overlap of an audio system without making any adjustments to the existing settings
• Verifies that the gain overlap of an install hasn't been tampered with after install
• Features our Patent Pending Distortion Detection system plus digital micro controller and our proprietary firmware
• 200V maximum input (same as DD-1 HV)
• Quasi-RMS voltmeter (can detect clipping at any frequency)

What is included?

• The Distortion Detector PLUS (DD-1+)
• Protective silicon rubber boot
• Calibrated Test tone CD
• Harness
• This manual
• Pride of ownership

• Distortion Detection trigger level > 1.0% Harmonic Distortion
• Guaranteed operating range of input signal is 1.2Vrms – 200Vrms.  (40,000 Watts at 1ohm) Auto ranging
• Low Battery LED trigger battery voltage < 6.5Vdc
• Auto-shut off timer 8 - 10 minutes after ON button is pressed
• Battery self-test and display of condition when DD-1+ is initialized

Shipping Policy

DBs Car Audio is proud to offer fast & free shipping on all items listed in our store!!

Shipping Methods and Transit Times

DBs Car Audio ships orders from our Saint Cloud, Florida location. On occasion, orders will be fulfilled directly by the manufacturer or distributor in order to reduce the shipping time..

Order Tracking

Once an order has been shipped, we send our customers an email with the tracking number for the order. Click on the tracking link in the email to follow the location of the package on the carrier's website. If you did not receive a tracking number by email or need to confirm the tracking information, please contact call us at 1-800-927-9390

Signature Required

Due to the valuable contents of some shipments, DBs Car Audio will only require a signature upon delivery if the order is over $500. Such guidelines will not be overruled upon the customer's request. Please understand that this is a security measure taken by our Company to ensure the safe delivery of each package and guarantee excellent service. Many of our third-party shipping carriers and payment companies require signatures upon delivery to protect against fraud and theft. Customers may request a signature upon delivery by emailing us at dbscaraudiofl@gmail.com.

Shipping Policy Disclaimer

Delivery estimates do not apply to items shipped directly from the manufacturer, nor out-of-stock items. Some items that ship from the manufacturer can only be delivered to addresses within the 48 continental states.

Standard delivery time for domestic customers will average from 2-4 business days, but can take longer in some cases. Saturday, Sunday and national holidays are not considered business days for delivery purposes.

Our Shipping Guarantee applies only to shipments delayed due to our service failure. We will not guarantee shipments that are delayed due to an act of god (ex: weather), a catastrophic event, or failure by our delivery partners. Our guarantee is also voided if incorrect billing or shipping information is given and results in your order being delayed to its destination. Our guarantee is also void if no one is available to sign for shipment when delivery attempt is made if a signature is required.