📢 Minimalist Passive Amplifier for Smartphones – Wireless Power! 🔊

Tired of low‑battery speakers or bulky cables? Eco-Sound is the perfect accessory to enjoy your music, podcasts, or hands‑free calls with surprising volume and enhanced audio quality, all without needing batteries or an external power source!

This passive amplifier, featuring a trumpet‑shaped design and a compact, minimalist form, leverages acoustic physics to channel and amplify your smartphone’s sound in a natural, highly efficient way. It’s ideal for your desk, kitchen, nightstand, or even for taking on the road.

Eco-Sound was designed to be assembled using empty spools from filament reels (Bambu, Anycubic, etc.), but you’ll also find a printable central cylinder included in the project.

I recommend using PLA as your printing material for optimal results, as its properties make it the best choice overall. It’s best to avoid materials like PLA Silk, PETG, and others, since their acoustic performance may not deliver the same level of clarity and fidelity.

Main Features:

• Acoustic Amplification: Boost your phone’s volume thanks to its carefully engineered shape.

• Elegant Design: Its clean, modern aesthetic complements any environment.

• Maximum Portability: Lightweight yet sturdy—perfect for carrying with you wherever you go.

• Universal Compatibility: Designed to accommodate most smartphones.

• Eco‑Friendly: Operates entirely passively, with zero energy consumption.

⚙️ Technical Details

• Compatibility: Suitable for standard‑sized smartphones.

• Unique Feature: Includes a discreet internal support that securely holds your smartphone in place, ensuring the phone’s speaker is perfectly aligned with the amplification channel.

• Recommended Material: PLA