About ADL


Penteo transforms any stereo recording, soundtrack, DJ mix or live television broadcast into perfect 5.1 surround sound. Developed by ADL, Penteo 4 Pro is the warmest and best sounding stereo-to-surround up-mixer because only Penteo remains faithful to the original stereo mix; no artificial sound manipulation is used. The result is that the Penteo 4 Pro plug-in creates a perfect surround experience for all stereo media with zero sonic artifacts, the most crisp and discrete center-channel available and only Penteo is 100% ITU down-mix compatible to the original stereo. Through its comprehensive controls, automation settings and advanced low-frequency management, Penteo 4 Pro provides the ultimate mixer experience. Penteo has been used by major studios on hundreds of films, TV shows and music recordings and supports RTAS, VST and AU formats. Audiotech Digital Limited (ADL) specializes in the development and marketing of high-quality digital audio software applications. Contact us at


Technical Partners


Penteo is a development partner with Avid.  Avid delivers the industry’s most open, innovative and comprehensive media platform connecting content creation with collaboration, asset protection, distribution and consumption for the most listened to, most watched and most loved media in the world—from the most prestigious and award-winning feature films, music recordings, and television shows, to live concerts and news broadcasts. Industry leading solutions include Pro Tools®, Media Composer®, ISIS®, Interplay®, and Sibelius®.  

Avid’s digital audio and video solutions continue to revolutionize the art of creative storytelling, and have earned us hundreds of awards, including two Oscar® statuettes, a Grammy®, and 14 Emmys®.

slatepro logo

Raven MTX from Slate Pro Audio – the first ever multi-touch audio production system available exclusively through GC Pro. Slate Pro Audio is a Penteo technical partner – Penteo 4 Touch was selected to be the world’s first multi-touch plug-in optimized for the Raven MTX Surround console.

US Distribution Partners

Cutting Edge Logo

Serving the San Francesco Bay Area, Cutting Edge covers many facets of the professional video, audio and media-creation markets.  Over the past nineteen years our clients have come to rely on our experience and in-depth knowledge when making their business decisions for broadcast, film, location recording, cameras and acquisition, post production, recording and music production, videogames and digital entertainment, live sound, education, and corporate AV.   We have created community along the way and we want to grow that circle to include you.

Guitar Center logoPrint

GC Pro is the outside sales division of Guitar Center that focuses on the needs of professional recording studios, audio engineers, producers, recording and touring musicians, live sound venues, post production facilities and more. More information on GC Pro can be found by visiting

With over 250 retail stores in the United States, Guitar Center is the leading United States retailer of guitars, amplifiers, percussion, keyboards and pro-audio and recording equipment. More information on Guitar Center can be found by visiting the Company’s website at

RSPE Audio Solutions has served the professional audio and video industry for over 22 years specializing in equipment sales, consultation, and all aspects of audio system and studio design. With friends and clients at every major motion picture facility and recording studio in Hollywood, plus studios around the globe, RSPE’s areas of expertise include Music Production, Broadcast, Post-Production, Live Sound, and Home & Business AV automation.

UK Distribution Partner


Mediapros distributes Penteo in the United Kingdom. MediaPros supply creative solutions to the broadcast, film & TV post-production, live sound, multimedia, professional music recording and video game development industries in the UK. MediaPros’ central London-based headquarters feature a state-of-the-art demo facility and purpose built studio suites that are backed up by a dedicated team that is committed customer satisfaction.

Australia & New Zealand Partner

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ATT Audio Controls is Penteo’s partner serving Australia and New Zealand.  Since 1985, ATT Audio Controls has endeavored to view people as human beings and not dollar signs.  We have assembled a portfolio of industrial audio and visual brands, systems and devices that we enjoy, believe in, and are demonstrably relevant, but most importantly, authentic.  We feel we have achieved an ideal balance between traditional (analogue) and new (digital) technology, all of which resonates positively with our contemporary industry.

Swiss Distribution Partner


Simola Eichmann Communications GmbH (SECG) has been selected to distribute Penteo 4 Pro in Switzerland. SECG is a pro audio dealer near Zürich, Switzerland that provides turnkey solutions for professional clients in the post, broadcast, live and music studios industries. As the only Swiss Avid Audio Elite Partner licensed to carry the full line of Avid products, SECG has made some of the biggest Pro Tools installations and their clients have sold over 50 million albums produced on SECG systems.


October 8, 2014 | Penteo Demonstrations at AES in Avid’s Booth 1201

September 16, 2014 | Oscar-Winning Steve Pederson Picks Penteo 4 Pro for “The Equalizer” – Stereo to Surround Upmixer Delivers Multi-channel score

September 10, 2014 | Neil Young’s 1982 Film Restores Lost Sound & Dialogue – Human Highway (Director’s Cut) World Premiere at TIFF

August 5, 2014 |  Randi Altman’s Post Perspectives Cover Story:  Sync Sound’s Ken Hahn talks “Live From The Met”, Surround and More

August 4, 2014 | Sync Sound’s Ken Hahn Picks Penteo 4 Pro for “Live From The Met”

July 24, 2014 |  Resolution Magazine Product Review on Penteo 4 Pro

July 7, 2014 | Trevor Morris Studios Mixer Phil McGowan Picks Penteo 4 Pro

June. 6, 2014 | Penteo 4 Pro Nominated for 2014 Plug-In of the Year by Resolution Magazine.

June 4, 2014 | Audio Media Magazine Technology Review of Penteo 4 Pro – see page 42.

June. 1, 2014 | Michael Worthington of Soundworthy Studios in Australia Wins Free Licence of Penteo 4 Pro.

May 24, 2014 | Hackenbacker’s Nigel Heath Hosts a Live Penteo Surround Master Class at Mark Knopfler’s British Grove Studios.

Apr. 25, 2014 | Mix Magazine:  Oscar-winning Steve Maslow plugs in Penteo 4 Pro at Warner Bros.

Apr. 24, 2014 | Read Post Perspective’ Interview with Steve Maslow on using Penteo 4 Pro!

Apr. 24, 2014 | Oscar-winning Steve Maslow Picks Penteo 4 Pro at Warner Bros.

Apr. 1, 2014 |  Penteo 4 Pro AAX Stereo-to-Surround Up-mixer at NAB in Avid’s Booth SU902!

Mar. 27, 2014 | Avid Selects Penteo 4 Pro as its Featured AAX Plug-in of the Month!

Mar. 24, 2014 | Oscar-winner Mike Minkler Picks Penteo 4 Pro at TODD-SOUNDELUX

Mar. 07, 2014 | ProTools Expert Video Review of Penteo 4 Pro

Mar. 04, 2014 | Penteo 4 Pro Stereo-to-Surround Up-mixer Now Available

Aug. 20, 2013 | Pro-Tools-Experts Review of Penteo 3 Pro – Video

Aug. 05, 2013 | GC Pro Announces RAVEN MTX Production Console By Slate Pro Audio Now Shipping with Penteo 3 Touch

May. 19, 2013 | Mediapros appointed UK Distributor for Penteo 3 Pro

Jan. 18, 2013 | Sonicstate: GC Pro named exclusive U.S. distributor of new Penteo plug-in

Jan. 17, 2013 | Mix Magazine: New Penteo Plug-In Available in February

Jan. 17, 2013 | ADL Announces GC Pro As US Distributor

Contact Us

For product, partnering or purchase information, please email us at

For support-related queries, please email us at