ELFINEAR Upgraded 40mm Solis40 Pro Max Hifi Headphone Driver Unit Wool Paper Cone PU Edge 32Ohm For DIY Headphone Modification

🔹 Basic Parameter

 
Item    Specification
Unit Diameter    40mm
Diaphragm    Wool-paper composite dome
Surround    PU edge
Voice Coil    20mm Copper-clad aluminum wire with SKV bobbin tube
DC Resistance    32Ω
1KHz Impedance    34.6Ω
1KHz Sensitivity    116.31dB
Polarit    Positive
Package Content    1 Pair + Speaker grills

🔹 Product Description

Upgraded Solis40 Pro Max 40mm Hifi Headphone Driver

Designed for Audiophiles, Upgrade Your DIY Headphone Experience

Based on the classic popular Solis40 40mm headphone unit, we upgraded the magnet with thicker thickness for stronger magnetic flux, delivering better dynamic performance and more solid sound quality. This is a high-quality headphone driver made for DIY lovers and audiophiles, bringing you a balanced and natural listening experience that fits most music types.

Premium Build Quality, Carefully Selected Materials

✅ Upgraded Thicker Magnet System
Compared to the old version, we increased the thickness of the magnet to boost overall magnetic flux, providing stronger driving force. The dynamic range is wider, sound keeps clean and stable even at high volume, and the sound field layering is clearer.

✅ Wool-Paper Composite Dome Diaphragm with PU Surround
Adopt classic wool-paper mixed diaphragm, it combines the warm sound signature of paper cone with the excellent damping, good weather resistance and toughness of composite material. The PU surround ensures long-time stable performance, bring you warm natural mid-frequency and elastic low-frequency.

✅ High-performance Voice Coil & High Consistency
Equipped with 20mm copper-clad aluminum voice coil on SKV bobbin tube, this configuration has lighter weight and better conductivity, bringing faster transient response and clearer detail resolution. All units are strictly tested with excellent product consistency, matched in pairs for better stereo performance.

✅ Easy to Drive & Widely Compatible
With 32Ω DC resistance and 116.31dB high sensitivity, this unit can be driven easily by most portable players, phones and desktop amplifiers, no need for high-power front-end to get full and nice sound. You will get a pair of units with exclusive speaker grills for direct DIY modification.

Professional Tested, Verify Excellent Sound Quality

Tested by professional electroacoustic instruments, this unit shows outstanding frequency response performance:

- Balanced Low Frequency: Flat response from 20Hz to 200Hz brings stable and elastic low frequency, no bloated or muddy bass. It performs well for drum beats and low-frequency instruments.
- Natural Mid Frequency: Smooth mid-range with small fluctuation restores human voice naturally, clear and sweet, very comfortable for listening to pop, vocal and acoustic music.
- Clear High Frequency: Moderate gain in high-mid frequency brings transparent sound without harsh sibilance, natural high frequency extension preserves enough instrumental overtone details, keeping listening experience bright but not fatiguing.
- Low Distortion: Total harmonic distortion is controlled below 1% in most full frequency range, low distortion brings clean and transparent sound, less unwanted harmonic noise, restores original music details.

Best Choice for Audiophile DIY Upgrade

Whether you are a beginner building your first DIY headphone, or upgrading an old headphone, this upgraded Solis40 Pro Max unit will bring you balanced, warm and comfortable sound. It performs great for pop, vocal, folk, ACG and most daily music genres, is a cost-effective choice for DIY lovers.