{"product_id":"dd-ddhifi-memory-4-4-planar-iem","title":"DD ddHiFi Memory 4.4 Planar In Ear Monitors","description":"\u003ch2\u003eEnjoy High-Fidelity Sound with Effortless Comfort\u003c\/h2\u003e\n\u003cp\u003eDelicate details of high-resolution music are perfectly restored, while the ultra-slim and compact body defines the unique charm of Memory 4.4. Despite its lightweight profile, it delivers solid low-frequency depth and transparent high-resolution performance. Small in size yet powerful in sound.\u003c\/p\u003e\n\u003ch2\u003eAL4.4 vs. Pd4.4: Which is Your Ideal Match?\u003c\/h2\u003e\n\u003cp\u003eThe housing material and weight of an IEM are critical factors that directly influence both wearing comfort and acoustic performance.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0065\/4432\/6771\/files\/AL4-06.jpg?v=1782230264\" alt=\"\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/p\u003e\n\u003ch3\u003eMemory AL4.4:\u003c\/h3\u003e\n\u003cp\u003eCrafted from lightweight aviation-grade aluminum alloy, it offers a stress-free fit that minimizes ear fatigue, making it perfect for daily commutes and extended listening sessions. With multiple sizes of silicone eartips, you can easily customize the seal and fit for a personalized blend of comfort and utility.\u003c\/p\u003e\n\u003ch3\u003eMemory Pd4.4:\u003cspan class=\"Apple-converted-space\"\u003e \u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp\u003eFeaturing a precision-machined pure copper housing with meticulously controlled wall thickness, this version provides a substantial, steady feel and superior passive noise isolation. Finished with premium palladium plating for a luxurious and durable texture, it strikes the perfect balance between sound quality, stability, and a high-end aesthetic.\u003c\/p\u003e\n\u003ch2\u003eThe Memory 4.4 features a revolutionary 13mm ultra-linear, full-range annular planar unit. \u003c\/h2\u003e\n\u003cp\u003eThis driver utilizes a sophisticated double-suspension structure and a high-performance four-magnet array,\u003cspan class=\"Apple-converted-space\"\u003e  \u003c\/span\u003eachieving an electro-acoustic conversion efficiency four times that of similarly sized dynamic drivers and ten times that of conventional 14.5mm planar units. By significantly reducing the non-linear distortion typical of planar drivers, this advanced engineering allows for an expansive and powerful dynamic range even with low-power input, while maintaining exceptionally clear, low-distortion performance during high-intensity output.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0065\/4432\/6771\/files\/AL4-07.jpg?v=1782230307\" alt=\"\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/p\u003e\n\u003ch2\u003eProfessional Audiophile-Grade Tuning\u003c\/h2\u003e\n\u003cp\u003eUnlike the USB version, the Memory 4.4 has undergone a complete acoustic overhaul. The position and surface area of the front and rear chamber vents have been entirely redesigned. Paired with a custom-shielded cable and a dedicated plug, it offers broader source compatibility and focuses on the purest high-fidelity music playback.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0065\/4432\/6771\/files\/AL4-08.jpg?v=1782230328\" alt=\"\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/p\u003e\n\u003ch2\u003eMemory – A Fusion of Retro and Classic\u003cspan class=\"Apple-converted-space\"\u003e \u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp\u003eThe reason early-generation products are fondly remembered lies in their timeless designs. However, reinterpreting \"retro\" in the modern era is more than just making a replica. By combining high-precision machining, professional grade drivers, enhanced ergonomics, and durable materials, we have re-envisioned a classic for a new age.\u003c\/p\u003e\n\u003ch2\u003eIncluded Retro Carrying Case\u003cspan class=\"Apple-converted-space\"\u003e \u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp\u003eInspired by the form factor of classic cassette players, this case blends vintage design language with modern trend colors. Crafted from premium microfiber leather and equipped with YKK zippers, the interior features dedicated compartments to keep the left and right metal earpieces separated, preventing scratches and wear from contact.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0065\/4432\/6771\/files\/AL4-10.jpg?v=1782230379\" alt=\"\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/p\u003e\n\u003ch2\u003eIncluded in the Package\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMemory Earphones: 1 Set\u003c\/li\u003e\n\u003cli\u003eS-size ST35 Eartips (Pre-installed) - 1 Pair\u003c\/li\u003e\n\u003cli\u003eCZ120B Black Storage Case: 1 Piece\u003c\/li\u003e\n\u003cli\u003eAdditional Eartips* : 3 Pairs (1 Pair each of S\/M\/L sizes)\u003c\/li\u003e\n\u003cli\u003eManual, Warranty Card, Certificate of Compliance: 1 Copy Each\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg height=\"390\" width=\"390\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0065\/4432\/6771\/files\/AL4-11.jpg?v=1782230425\" alt=\"\" style=\"float: left;\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0065\/4432\/6771\/files\/Pd4-11.jpg?v=1782230778\" width=\"390\" height=\"390\"\u003e\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDriver Configuration: 13mm Planar Driver\u003c\/li\u003e\n\u003cli\u003ePlug: 4.4mm Balanced Plug\u003c\/li\u003e\n\u003cli\u003eEffective FR.: 20Hz - 20kHz\u003cspan class=\"Apple-converted-space\"\u003e \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eImpedance: 16Ω±15% (@1kHz)\u003c\/li\u003e\n\u003cli\u003eSensitivity: 121dB\/Vrms (@1kHz)\u003c\/li\u003e\n\u003cli\u003eTHD: ≤0.1% (@1kHz)\u003c\/li\u003e\n\u003cli\u003eHousing (AL4 Ver.): CNC Machined AL6063 Aviation Aluminum Alloy\u003c\/li\u003e\n\u003cli\u003eHousing (Pd4 Ver.): Palladium-Plated Pure Copper Housing\u003c\/li\u003e\n\u003cli\u003eCable (AL4 Ver.): Gray Braided 5N OCC Cable\u003c\/li\u003e\n\u003cli\u003eCable (Pd4 Ver.): Black Braided 6N OCC Cable\u003c\/li\u003e\n\u003cli\u003eWeight (AL4 Ver.): Approx. 25g\u003c\/li\u003e\n\u003cli\u003eWeight (Pd4 Ver.): Approx. 31g\u003c\/li\u003e\n\u003cli\u003eCable Length: 120cm\u003c\/li\u003e\n\u003cli\u003eAL4 Weight: About 25g\u003c\/li\u003e\n\u003cli\u003ePd4 Weight: About 31g\u003c\/li\u003e\n\u003cli\u003eCable Length: 120cm\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DD ddHiFi","offers":[{"title":"AL4.4","offer_id":51437672792297,"sku":"E13P-AL4","price":159.0,"currency_code":"USD","in_stock":true},{"title":"Pd4.4","offer_id":51437672825065,"sku":"E13P-Pd4","price":189.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0065\/4432\/6771\/files\/AL4-03.jpg?v=1782230908","url":"https:\/\/audio46.com\/products\/dd-ddhifi-memory-4-4-planar-iem","provider":"Audio46 Headphone Store","version":"1.0","type":"link"}