Product Overview & Specifications
The Cayin HA-300 MK3 (Type UK Edition) is the third-generation evolution of Cayin's flagship 300B single-ended Class A triode tube headphone and integrated speaker amplifier. Manufactured specifically for the UK market with custom 240V transformers, this dual-chassis flagship separates the sensitive signal path from the power supply, achieving ultra-low background noise and extreme power stability.
The MK3 revision introduces a completely upgraded third-generation circuit topology featuring wide-bandwidth EI output transformers, a custom toroidal power transformer, and premium Danish DUELUND coupling capacitors. It transitions to GZ34 / 5AR4 tube rectification for enhanced flexibility when tube-rolling. With three impedance modes (Low, Medium, High) and an attenuated 4.4mm balanced output, the HA-300 MK3 seamlessly drives everything from ultra-sensitive IEMs up to demanding full-sized planar magnetic headphones and desktop loudspeakers.
KEY FEATURES & PROPRIETARY TECHNOLOGIES
- Type UK Specific 240V Power Transformers: Manufactured specifically for Audio Emotion with bespoke 240V power transformers optimized for UK mains voltage.
- Pure Class A 300B SET Architecture: Employs a single-ended triode (SET) topology featuring matched Genalex Gold Lion PX300B output tubes, JJ 6SN7 voltage drivers, and GZ34 / 5AR4 tube rectifiers.
- Two-Chassis Physical Isolation: Physical separation between the main amplifier unit and external power supply housing eliminates EMI, hum, and mechanical vibrations.
- Third-Gen Wide-Bandwidth EI Transformers: In-house custom wide-bandwidth EI output transformers paired with a high-efficiency toroidal power transformer provide superior frequency linearity and dynamic control.
- Danish DUELUND Coupling Capacitors: Audiophile-grade DUELUND coupling capacitors installed in the signal path deliver maximum detail retrieval, natural warmth, and smooth high-frequency extension.
- Point-to-Point Hand Wiring: Traditional point-to-point hand-wired construction ensures the shortest signal paths and ultra-low internal resistance.
- Triple Impedance Matching & Attenuated IEM Output: Features Low (8–65 Ω), Medium (65–300 Ω), and High (300–600 Ω) headphone impedance switching alongside a low-noise 4.4mm balanced output tailored for IEMs.
- Integrated Loudspeaker Output Stage: Delivers 8W + 8W of Pure Class A single-ended power via rear banana speaker posts to drive high-efficiency desktop loudspeakers.
SPECIFICATIONS
| Product Category | Flagship Class A Single-Ended Triode (SET) Tube Headphone & Speaker Amplifier |
| Model Edition | Cayin HA-300 MK3 (Type UK Edition - 240V Mains Specification) |
| Chassis Design | Two-Box Dual Chassis (Separate Power Supply & Amplifier Enclosures) |
| Stock Tube Complement | 2 x Genalex Gold Lion PX300B, 2 x JJ 6SN7, 2 x JJ GZ34 / 5AR4 |
| Headphone Rated Output (4-Pin XLR BAL) | 6500 mW + 6500 mW |
| Headphone Rated Output (6.35mm STD) | 6000 mW + 6000 mW |
| Headphone Rated Output (4.4mm BAL) | 1600 mW + 1600 mW (Attenuated for Low Noise with IEMs) |
| Speaker Rated Power Output | 8 W + 8 W (Class A @ 4–8 Ω) |
| Headphone Frequency Response | 12 Hz – 35 kHz (±3 dB) |
| Speaker Frequency Response | 10 Hz – 35 kHz (±3 dB) |
| Headphone Impedance Matching | Low: 8–65 Ω | Medium: 65–300 Ω | High: 300–600 Ω |
| Signal-to-Noise Ratio (S/N) | Headphone: 100 dB (A-Weighted) | Speaker: 102 dB (A-Weighted) |
| Total Harmonic Distortion (THD) | Headphone: <1% (1kHz, 1500mW) | Speaker: <1% (1kHz, 3W) |
| Analog Audio Inputs | 1 x Stereo Pair Balanced XLR, 1 x Stereo Pair Unbalanced RCA |
| Headphone Output Jacks | 1 x 6.35mm Single-Ended, 1 x 4.4mm Balanced, 1 x 4-Pin XLR Balanced |
| Internal Componentry | DUELUND Capacitors, Point-to-Point Wiring, 3rd-Gen EI Output & Toroidal Transformers |
| Input Impedance | RCA: 25 kΩ | XLR: 12.5 kΩ |
| Power Supply Dimensions (W x D x H) | 159 x 345 x 205 mm (Weight: 10.0 kg) |
| Amplifier Unit Dimensions (W x D x H) | 286 x 368 x 205 mm (Weight: 16.8 kg) |
| Total System Net Weight | 26.8 kg |
| Power Consumption & Fuse | 160 W Max | 220–240V Fuse: T1.6AL250V | 300B External Fuse: T100mAE250V |
Customer Reviews
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Cayin HA-300 MK3 - Type UK
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