Our Story
Breaking barriers through accessible audio...
How it started
The Solar-Powered audio book Story










Engaging Audio. Expanding Access.
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As a publishing and accessibility leader in Australia during the 1980s, Tom Treseder was deeply aware that billions of people around the world could not easily access printed materials because of literacy barriers or visual impairment. Motivated by a passion for accessibility, Tom began exploring how emerging technology could help deliver audio content to people in more practical and inclusive ways.
Thousands of audio cassettes and records were distributed to remote regions. The response from oral learners was encouraging, but widespread equipment failures created ongoing challenges.
Tape recorders, cassettes, and record players struggled to survive harsh environments. Tapes froze in cold climates and deteriorated in tropical heat. Sand and dust damaged mechanical components. “It was incredibly frustrating,” Tom recalls. “Every machine we sent out was eventually going to fail. And it took more than a dozen cassettes just to carry one large audio collection.”
Technology in the 1980s simply wasn’t built for difficult field conditions. When Tom suggested the idea of an audio player without moving parts, engineers told him it wasn’t possible. But he didn’t give up. Instead, he and fellow innovators began imagining a radically new type of audio player.
One day in 1988, while visiting a car dealership, Tom heard a car speak through a built-in memory chip. The moment sparked a breakthrough idea: if vehicles could deliver spoken audio digitally, why couldn’t a durable portable device do the same?
Inspired by that experience, Tom sketched the first concept for what would become the world’s first solar-powered audio player — a device designed to be affordable, durable, easy to navigate, and accessible to people regardless of literacy or vision ability.
With the vision on paper, Tom soon met Ken Crowell, an American engineer with deep technical expertise. Businessman J. Rudolf Geigy later joined the effort, helping transform the concept into reality. Together, the three pioneers would help create the world’s first solar-powered audio player platform.
Today, Tom and his wife Merriel continue to live in Australia, partnering with organizations around the world to expand access to multilingual audio content.
Ken Crowell was a mechanical engineer known for his integrity, innovation, and passion for solving complex technical challenges. Through his high-tech company, Galtronics, he built a reputation for excellence while creating opportunities for countless employees and collaborators over the years.
In the 1980s, Ken became interested in developing a new kind of shortwave radio designed for use in remote environments. That vision eventually led to the creation of Galcom and the development of specialized radio systems distributed across more than 135 countries.
As those projects expanded, Ken was introduced to Tom Treseder, who was exploring new ways to provide accessible audio content to people worldwide. At the time, cassette players were unreliable, difficult to transport, and poorly suited for harsh environments. Existing technology made the idea of a durable digital audio player extremely ambitious.
Ken and Tom were soon joined by businessman Rudolf Geigy. Together, they spent years developing, testing, and refining new solutions. What began in Ken Crowell’s labs as a tiny device capable of speaking for only a few seconds eventually became the solar-powered MegaVoice platform — capable of storing and playing thousands of hours of multilingual audio content.
Following a long battle with chronic leukemia, Ken Crowell passed away on January 25, 2012. He is survived by his wife of 57 years, Margie. Together, Ken and Margie helped shape technologies and organizations that continue to impact communities around the world today.
J. Rudolf Geigy joined Ken Crowell and Tom Treseder early in the development of the solar-powered audio player project. Although the vision was years ahead of available technology, Rudolf believed strongly in its potential to improve access to audio content worldwide.
Overcoming financial and technical barriers required extraordinary perseverance, and Rudolf consistently helped provide the resources needed to continue development through years of experimentation and innovation.
“I highly respected Ken’s courage to push technology far beyond what seemed possible at the time,” Rudolf recalls. “We were attempting to build something that simply didn’t exist yet.”
Together, the three pioneers and their families invested years of effort into transforming an experimental concept into a practical, field-ready device. What began as a tiny digital prototype eventually became the MegaVoice solar-powered audio player platform used around the world today.
Rudolf remains actively involved in supporting the long-term vision of expanding access to durable multilingual audio technology.
Frequently Asked Questions
What is MegaVoice?
MegaVoice provides durable, solar-powered audio and video devices that make audio content accessible to people worldwide – especially those who are blind, deaf, illiterate, or in remote regions. We also maintain one of the world’s largest collections of multilingual audio content, helping organizations equip people with content in their heart language.
What does MegaVoice mean by “tamper proof message”?
Our tamper-proof technology ensures that preloaded content remains unchanged, preventing accidental deletion or unauthorized modifications. This is especially valuable for organizations distributing devices in sensitive regions or to people with limited technical experience.
Once our organization has produced its message, how does it get onto a MegaVoice audio book?
If you intend to distribute your content on MegaVoice audio devices, send our team your audio file and we will load it onto them for you.
If your organization is working in the field and intends to load a limited number of devices at one time, you can do so with the Envoy E/S Series audio players. These devices enable you to overwrite previously recorded content.
Updating content on your audio devices works well if you are testing your recordings among a specific audience. The Envoy 2 S can hold up to ten hours of content, is field-programmable using a PC, and is well suited for audio storytelling and content development.
Do you donate the audio units or do you charge for them?
MegaVoice operates as a business, not a donor-funded organization. We sell our devices at the lowest possible cost to help organizations stretch their resources and reach more people. Some partners secure sponsorships or grants to help fund their distribution efforts.
How much do they cost?
Pricing depends on the device model and features. Because we serve organizations of all sizes, we offer a range of options to fit different budgets. Contact our team for pricing details and bulk order discounts.
Which player would you recommend?
The right device depends on your organization’s needs. For rugged, all-purpose audio players, our Elite and Equip models are popular choices. If you need a video device for the deaf or visually impaired, the Envision is ideal. Reach out to us, and we’ll help you find the best fit.
Do you preload the audio book content?
Yes! Most partners choose to have their devices preloaded with our content before shipping. You can select content from the MegaVoice Media Cloud or provide your own recordings.
Do you ship overseas?
Yes, we ship worldwide. Our team works with organizations across the globe to ensure smooth delivery, and we can provide guidance on customs and import considerations.
Warranty Policy
MegaVoice devices are built for durability, but if any issues arise, we’ve got you covered. We offer a limited warranty on all products. If you experience a defect or malfunction, contact our support team for assistance.