Every release integrates dedicated miniature soundboards tuned specifically to vibrate the card stock itself, producing warm acoustic resonance when the front cover opens.
Calibrated cotton paper stock
Standard printed greeting cards buckle under internal electronics. We engineer multi-layered 400gsm cotton boards with milled internal chambers that conceal coin cells and miniature speakers without visible exterior bulk.
Each card utilizes hand-assembled copper leaf contact switches. When the French fold opens, the physical tension closes the circuit instantly to trigger seamless, uncompressed playback.
Three stages of tactile engineering
Acoustic Studio Recording
Foil Deboss & Micro Assembly
Fifty-Cycle Stress Testing
Independent musicians record original melodic motifs using real brass, strings, and acoustic instruments, mastered specifically for micro-transducer frequencies.
Heavyweight paper covers receive deep metallic foil impressions on vintage platen presses before technicians hand-wire the interior sound modules.
Every finished greeting piece undergoes fifty physical opening and closing cycles to guarantee flawless contact switch engagement and battery lifespan.