Hotcake, a visionary concept by designer Woojin Jang, reimagines how people experience music together, whether they’re across the room or across the world. This modular wireless speaker system is engineered to turn any space into a vibrant, interactive jam session, making every moment with music feel unforgettable and deeply connected.
Hotcake is not just about listening but about playing, feeling, and sharing music with friends. With Hotcake, you can spontaneously play music with others, wherever you are, and enjoy immersive 3D sound that feels like everyone is right there in the room. Its design keeps all players perfectly in sync, so magical moments happen naturally, whether you’re jamming at home or connecting with friends online. This concept recognizes that music flourishes when it’s shared, letting different instruments and personalities come together to create something richer and more joyful than any solo performance.
Designer: Woojin Jang
The Hotcake system centers around two main components: Cake and Butter. Cake is a modular speaker and woofer system that seamlessly delivers rich, real-time audio. Each Cake module connects through a dedicated 2.4GHz RF channel and uses a wired Ethernet connection to ensure there are no delays or interruptions, so even musicians playing from different parts of the world can experience flawless timing and smooth collaboration.
Butter is a wearable device that adds a whole new layer to the experience. It lets you feel the beat through haptic feedback, so you don’t just hear the music as you sense it in your body. Butter can switch to metronome mode to help you stay on beat or use its built-in mic for chatting with other musicians. With Butter, the energy of live music becomes tangible, adding texture and excitement to every session.
Hotcake is designed for the moments when you want to play but don’t have a band nearby. Simply open Hotcake’s community feature to connect with new bandmates who share your musical taste, or start a session with friends. If you’re missing a player, AI can step in, playing along with your rhythm so the session always feels full and dynamic. The experience goes beyond just sound. Cake modules light up in real time, visually reflecting each musician’s performance and turning your space into a personal stage. When the timing clicks and the music peaks, LED lights transform your room, while gesture controls can trigger special sound effects, making every jam session interactive and fun.
After your session, Hotcake’s AI automatically edits and highlights your solo moments into a video, letting you relive and share the best parts with your bandmates. This makes it easy to replay your favorite sessions and keep the inspiration alive. Hotcake also embraces accessibility. Butter’s haptic feedback makes it possible for people who are deaf or hard of hearing to feel the rhythm and join the session fully. Studio Mode headphones offer another way to immerse yourself in your music and become part of the creative process. As a concept, Hotcake is a glimpse into a future where music connects people in new and meaningful ways, turning every jam into a shared, memorable event.
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