To place a secure Internet order for the  Felston DD740 at $249 plus shipping click the "Buy Now" button below. You will also have the option to pay over 6 months with no interest: 

Shipping via USPS Priority Mail (2 or 3 days in the continental US) is $9.95
For orders outside the continental United States please



 100% Satisfaction Money Back Guarantee!

In addition to Felston's one year product warranty offers a 14 day money back return privilege for any reason whatsoever.

To place a phone order, call:
 9am to 5pm E.S.T. Monday -Friday

Or mail orders to: LipFix Technology, 5206 Pinestraw Road, Columbia, SC  29206


Building upon the proven DD340 and DD540 digital audio delays which came before it the DD740 includes lip-sync correction features no A/V Receiver offers:

DD740 Remote Control


  • Four Digital Audio Inputs: 2 Toslink and 2 Coax

  • 680 ms delay at 48 KHz or 340 ms at 96 KHz

  • 36 Presets (9 per input)

  • Numeric Delay Entry

  • Tweaking in 1 ms and 1/3 ms steps

  • On-the-fly adjustment with no image overlay

 For more product information on the Felston DD740
please visit:

Or download the DD740 Owner's Manual below. We have included the manual for Felston's second generation two input model, the DD540, for those who may be considering a pre-owned unit available from our customers upgrading to the third generation DD740.


Click for the DD740 Owners Manual


Click for the DD540 Owners Manual