{"product_id":"smd-dd-1-distortion-detector-plus","title":"SMD DD-1+ Distortion Detector Plus","description":"\u003cp\u003eSMD DD-1+ Distortion Detector Plus is an audio distortion detector from SMD for car-audio system calibration and amplifier gain setup. This page identifies the exact variant rather than a general product family, so the configuration, model code, and barcode can be checked together before purchase.\u003c\/p\u003e\u003ch2\u003eKey features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurpose:\u003c\/strong\u003e Detects signal distortion and supports accurate amplifier gain-overlap setup without relying on an oscilloscope.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGain overlap:\u003c\/strong\u003e Continuously adjustable from 0.0 dB to 15.0 dB in 0.1 dB steps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput range:\u003c\/strong\u003e Autoranging operation from 1.2 Vrms to 200 Vrms, equivalent to the stated 40,000 watts at 1 ohm maximum reference.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDetection:\u003c\/strong\u003e Triggers above 1.0% harmonic distortion and includes a quasi-RMS voltmeter for clipping checks across frequencies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower management:\u003c\/strong\u003e Low-battery indication below 6.5 VDC, battery self-test at startup, and automatic shutoff after approximately 8 to 10 minutes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded:\u003c\/strong\u003e DD-1+ detector, calibrated test-tone CD, measurement harness, and manual.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Distortion effect.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eChoosing the correct configuration\u003c\/h2\u003e\u003cp\u003eConfirm that the system voltage is within the specified input range, follow the supplied test-tone and connection procedure, and set gain overlap according to the amplifier, speakers, and installation goals. Product photos may show details from several angles; use the written model and identifier fields below as the final reference for this listing.\u003c\/p\u003e\u003ch2\u003eProduct details\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e SMD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel \/ SKU:\u003c\/strong\u003e DD-1+\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct type:\u003c\/strong\u003e Electronics \u0026amp; Amplifiers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGTIN:\u003c\/strong\u003e 680220998341\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SMD","offers":[{"title":"Default Title","offer_id":58657623540044,"sku":"DD-1+","price":455.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1082\/3453\/9340\/files\/b07qb4tnlv-01-amazon.jpg?v=1788339468","url":"https:\/\/sigonnamusic.com\/products\/smd-dd-1-distortion-detector-plus","provider":"SIGONNA Music","version":"1.0","type":"link"}