About Amplitude Agency | Search Marketing Agency - Amplitude Digital


Since 2004, Amplitude Digital has been helping connect great companies with their clients online with efficiency, purpose and style.

Amplitude Digital, a leading SEO and PPC search marketing agency in Los Angeles, delivers sales and leads using data-centric strategies that reduce wasteful media spend and grow revenue. Clients depend on our veteran search experts, deep analytic methodology and real-time dashboards to keep ahead of the competition at all times.
We are a recipient of the Los Angeles Agency Award of Excellence, recognizing our efforts in Search Engine Optimization, Paid Search, Google Shopping Ads, Remarketing and Content Marketing. Our award-winning combination of technology and talent excels with performance-based strategy, high-touch communication, efficient spending and transparent reporting to produce stellar results every time.

Since 2004, we’ve helped leading brands such as Toyota, The Hollywood Sign, Spafinder, Experian, McKesson and Costco exceed their goals.


  • Founded in 2004 in Los Angeles, CA
  • Strength in financial services, wellness, healthcare, automotive, retail ecommerce and non-profit
  • Leadership experience from Fortune 15 to early-stage startup
  • Winner: 2016 Los Angeles Advertising Agency Award
  • Winner: 2016 Softech International Business Awards


Amplitude was built by a small team of principals averaging over 20 years each in marketing experience for great companies both large and small.

Partner, Founder

Duff Ferguson is Founder/Partner of Amplitude, responsible for directing the strategy, operations and sales & marketing functions.

Duff began his career in New York City leading global communications for two of Wall Street’s largest asset management companies before being lured to Silicon Valley to build a digital presence for a Fortune 15 healthcare giant.

The success of this work led to the founding of Amplitude, whom would later acquire Big Data ecommerce agency Konnect Digital in 2015. The melding of analytics, ecommerce and classic marketing strategy have proven a successful formula, helping brands reach the right audience online – leading to increased qualified traffic and revenue.

Duff is proud that his company supports local music and film, foster kids, architecture, history, as well as animal rescue. Duff is a sought after speaker on business strategy and entrepreneurship at conferences and colleges in Los Angeles.

Duff received his B.A. degree in History from Haverford College.

Duff lives with his family in Los Angeles.


Joe Livingston joined Amplitude Digital in 2015 with the acquisition of Konnect Digital Media, an ecommerce agency he founded in 2013. At Amplitude, Joe oversees all digital media efforts including PPC, SEO, and conversion rate optimization. With 20 years of online marketing experience, Joe has worked with organizations including Costco, PayPal, AOL, Hostway, Dr. Schulze, Microsoft, Goldline, American Greetings and Target.

From 2010 to 2013, Joe worked closely with Google on beta testing and was recognized for managing multi-million dollar search and display campaigns, being invited to speak about display advertising at Google’s 2011 national conference.

Joe has also served as a consultant for the 35th Director of the United States Mint, Philip N. Diehl, and in 2003 was a recipient of CUNA Marketing Council’s Diamond Award.


Life is too short to spend in a job you hate! At Amplitude, we push the envelope together every day for our clients, keep learning and never rest on our laurels. We also have a lot of fun along the way. Sound like your kind of company?


SEM / PPC Director

Marketing Coordinator