Temperament (Cayin Technology) has just released a reference-grade flat-head earbud that's turning heads in the audiophile community: the DM7S 137.
Introducing the DM7S 137: Reference-Grade Flat-Head Excellence
Chinese audio manufacturer Temperament (Cayin Technology) has recently launched a reference-grade flat-head earbud that combines cutting-edge driver technology with premium materials and meticulous tuning: the DM7S 137.
Priced at $439.99 USD, the DM7S 137 represents a serious commitment to audiophile-grade sound quality in the classic flat-head form factor that enthusiasts have cherished for decades.
Advanced 15.4mm Dynamic Driver Technology
At the heart of the DM7S 137 lies a precision-engineered 15.4mm dynamic driver featuring several proprietary technologies:
🔬 Driver Technology Highlights
- Patented Diamond-Cut Suspension: Ensures precise diaphragm movement and reduced distortion
- High-Polymer Diaphragm: Delivers fast transient response and excellent detail retrieval
- N52 Dual Linear Magnetic Circuit: Provides powerful, controlled magnetic field for rich, warm sound with three-dimensional soundstage
- Ultra-Fine Aluminum Voice Coil: Combined with multi-layer composite coil technology for enhanced dynamic energy reserves
Through meticulous tuning of the voice coil and acoustic chamber, the DM7S 137 achieves accurate, focused imaging with authentic, listenable sound that reveals the true character of your music.
Premium Build Quality & Design
The DM7S 137 showcases exceptional craftsmanship and attention to detail:
🏗️ Aerospace-Grade Construction
The earbud housing is crafted from 6-series aerospace-grade aluminum-magnesium alloy, precision-machined using CNC technology and finished with a sapphire coating process for outstanding texture and durability. The result is a premium feel that matches the reference-grade sound quality.
👂 Ergonomic Comfort
The DM7S 137 features a progressive patented ear-conforming structure that effectively reduces pressure on the ear canal, providing comfortable and secure fit for extended listening sessions. This thoughtful design ensures you can enjoy your music for hours without fatigue.
Detachable Cable System
The DM7S 137 employs a versatile detachable cable design for maximum flexibility:
🔌 Cable Specifications
- Base Material: Secondary-smelted copper foil Type 2 wire for excellent conductivity
- Connector: 0.78mm dual-pin standard (upgrade-friendly)
- Plug Type: Interchangeable design
- Included Plugs: 3.5mm single-ended AND 4.4mm balanced
This dual-plug configuration allows you to easily switch between different playback devices and take advantage of balanced output when available, ensuring optimal performance across your entire audio setup.
Technical Specifications
| Specification | Value |
|---|---|
| Driver Size | 15.4mm Dynamic Driver |
| Frequency Response | 8Hz - 35kHz |
| Sensitivity | 106dB |
| Impedance | 137Ω |
| Housing Material | 6-Series Aerospace Aluminum-Magnesium Alloy |
| Cable Connector | 0.78mm Dual-Pin (Detachable) |
⚠️ Amplification Note: With 137Ω impedance, the DM7S 137 is not easy to drive optimally. We strongly recommend pairing with a quality portable DAP or desktop amplifier to unlock the earbuds' full potential and experience their reference-grade sound quality.
Sound Signature: Rich, Warm, and Three-Dimensional
The DM7S 137 delivers a rich, warm sound signature with exceptional three-dimensional soundstage—a hallmark of well-tuned flat-head earbuds. The combination of advanced driver technology and precise acoustic tuning results in:
- ✨ Accurate imaging: Instruments and vocals are precisely positioned in space
- ✨ Natural tonality: True-to-life timbre across all frequencies
- ✨ Extended frequency response: Deep bass extension down to 8Hz and sparkling highs up to 35kHz
- ✨ Fatigue-free listening: Smooth, refined presentation perfect for long sessions
- ✨ Open soundstage: The flat-head design creates a spacious, speaker-like presentation
Who Should Buy the DM7S 137?
The Temperament DM7S 137 is ideal for:
- 🎵 Audiophiles seeking reference-grade flat-head earbuds with exceptional build quality
- 🎵 Classical and jazz enthusiasts who appreciate natural tonality and spacious soundstage
- 🎵 Flat-head earbud collectors looking for a premium addition to their collection
- 🎵 Critical listeners who own quality DAPs or desktop amplifiers (essential for optimal performance)
- 🎵 Comfort seekers who prefer the non-insertion design of flat-head earbuds for long listening sessions
Availability & Pricing
The Temperament DM7S 137 is now available at $439.99 USD with worldwide shipping from The HiFi Cat.
🛒 Get Your DM7S 137 Today
Experience reference-grade flat-head sound with aerospace-grade build quality
Shop Temperament DM7S 137 →🎧 Why Buy from The HiFi Cat?
- ✅ Authorized Temperament dealer—100% authentic products
- ✅ Fast worldwide shipping with tracking
- ✅ Expert customer support from audio enthusiasts
- ✅ Secure payment & buyer protection
- ✅ Official manufacturer warranty included
- ✅ Amplifier pairing recommendations available
Published: January 13, 2026
The HiFi Cat Team
