Professional audiobook narration by a real British narrator — and an ethical AI voice extension built for creators who need studio-quality sound without the studio.
The studio
25Bit Echo is a boutique voice studio founded on a simple belief: the best storytelling demands emotional truth, sustained craft, and a voice that listeners come back to.
We work across two distinct strands — craft-led human narration by Tamsin for audiobooks and long-form content, and ethical AI voice products built for content creators, streamers, and developers. The same voice. Two very different products.
Everything we produce is built for longevity, not convenience. Brand equity over shortcuts. Quality over volume. Always.
Meet Tamsin
"Warm, restrained, and emotionally precise — the voice your story has been waiting for."
Tamsin is the lead narrator and primary creative voice of 25Bit Echo. An authentic British narrator with professional audiobook and documentary-grade delivery — bringing calm intelligence and emotional subtlety to every performance.
Tamsin's visual identity is an AI-created character archetype, used solely for brand illustration and visual consistency. She represents the voice and values of 25Bit Echo — not a real person on camera.
What we do
Human narration and an ethical AI voice extension — two distinct products, one voice. Whether you need a real British narrator for your audiobook or studio-quality AI voice for your content, Tamsin delivers.
Professional audiobook narration by Tamsin — a real British voice with warmth, precision, and emotional intelligence. ACX-compliant, studio-quality recordings across literary fiction, thriller, non-fiction, and more.
Enquire about narrationTamsin's AI voice is available to license directly on ElevenLabs, or as purpose-built voice packs on Gumroad. Always consented, always transparent.
AI voice productsWe also offer...
Narrative-led content with substance and voice — from scripts and editorial to brand copy and long-form digital content.
AI voice products
Born from Tamsin's work as a professional audiobook narrator — her AI voice is available to license on ElevenLabs or as purpose-built packs on Gumroad. Always consented, always transparent.
Ideal for publishers, producers, and developers needing flexible, API-level access. License Tamsin's voice on the ElevenLabs marketplace and integrate it into your own pipeline.
Purpose-built packs for specific use cases. Browse our Gumroad shop (opens in a new tab).
More packs are in production — follow on Gumroad (opens in a new tab) to be notified when they drop.
Our AI voice position
25Bit Echo is built on transparency. Our AI voice content is always labelled, always consented, and always secondary to real human performance. We believe the future of voice technology belongs to studios that are honest about what they are — and uncompromising about quality.
Get in touch
Whether you need a human narrator, want to license Tamsin's AI voice, are looking for a voice pack for your project, or want to collaborate — we'd love to hear from you.