Check the listing for details. SPL Auto-Dynamic De-Essor - New Old Stock, Free Shipping. Condition: New. Listed at 700.00 USD. SPL Auto-Dynamic De-Essor - New Old Stock, Free Shipping The SPL Auto-Dynamic De-Esser removes undesired sibilant frequencies in a simple and musical way. The S-removal is based on phase cancellation which does not compromise the timbre and natural character of the recorded vocal track. The De-Esser uses a unique technology to reduce sibilance in a mix or on vocal tracks. It automatically detects and hones in on the sibilant frequencies leaving neighboring frequencies unaffected. The S-sounds are mixed back into the main signal phase-inverted to cancel out the sibilance. The result is a sound-neutral, inconspicuous and extremely effective process. Even at high S-Reduction values the de-essing has an eligible effect on the character and timbre of the voice. Condition: This unit is new old stock and has been stored in our warehouse for 14+ years. It is in new condition and comes complete in its original packaging with power cord and manual. The two knobs on the unit are made with rubber and are sticky with age. We offer a 7 day guarantee. If the unit does not work or quits within 7 days of receipt, we will repair or refund your money at our discretion. Free Shipping! (within the Continental United States only)