Experience High-Fidelity Sound in a Compact Form
The ddHiFi × MOONDROP Memory AL4.4 is a premium in-ear monitor that combines cutting-edge planar magnetic technology with a timeless retro aesthetic. Designed for audiophiles and music enthusiasts alike, this model delivers exceptional clarity, powerful dynamics, and remarkable comfort for everyday listening.
Featuring an advanced 13mm planar driver and a lightweight aluminum alloy housing, the Memory AL4.4 reproduces every detail of your favorite recordings with impressive precision while maintaining a comfortable fit for extended listening sessions.
Lightweight Aerospace-Grade Aluminum Construction
The Memory AL4.4 is crafted from CNC-machined AL6063 aerospace-grade aluminum alloy, offering an ideal balance of durability and lightweight comfort. Its ergonomic design minimizes pressure on the ears, allowing users to enjoy music for hours without fatigue.
The compact housing sits naturally in the ear canal, while multiple sizes of silicone ear tips ensure a secure and personalized fit for different ear shapes.
Advanced 13mm Full-Range Planar Driver
At the heart of the Memory AL4.4 lies an innovative 13mm ultra-linear annular planar magnetic driver engineered to deliver accurate and natural sound reproduction across the entire frequency spectrum.
The driver incorporates a sophisticated dual-suspension architecture and a powerful four-magnet array, significantly improving electro-acoustic efficiency while reducing distortion. This advanced design provides:
- Deep and controlled bass response
- Rich and natural midrange presentation
- Extended and detailed treble performance
- Fast transient response
- Excellent instrument separation
- Wide and immersive soundstage
The result is a highly engaging listening experience that remains clean and dynamic even at higher volume levels.
Audiophile-Grade Acoustic Tuning
Unlike the USB version of the Memory series, the Memory AL4.4 has undergone a complete acoustic redesign. The positioning and dimensions of the front and rear acoustic vents have been carefully optimized to achieve a more balanced and refined sound signature.
Combined with a custom-shielded cable and dedicated balanced plug, the earphones offer outstanding source compatibility while preserving the purity and accuracy of high-resolution audio playback.
Classic Retro Styling Reimagined
The Memory AL4.4 pays tribute to iconic audio products from previous generations while incorporating modern engineering and premium materials. Instead of simply recreating a vintage design, ddHiFi and MOONDROP have reinterpreted retro aesthetics through contemporary manufacturing techniques and improved ergonomics.
This unique combination of nostalgia and innovation makes the Memory AL4.4 both visually distinctive and technologically advanced.
Premium Retro Carrying Case Included
The included carrying case draws inspiration from classic portable cassette players, blending vintage design elements with modern craftsmanship.
Made from high-quality microfiber leather and equipped with durable YKK zippers, the case features dedicated compartments that keep the left and right earpieces separated during transport. This thoughtful design helps prevent scratches, impacts, and everyday wear.
In the box:
- Memory AL4.4 Earphones,
- ST35 Silicone Ear Tips (Size S, Pre-installed) × 1 Pair,
- Additional KIWIFLEX Silicone Ear Tips (Sizes S/M/L) × 3 Pairs,
- CZ120B Retro Carrying Case,
- User Manual.




































































