Cayin
Cayin HA-300 300B Class A Vacuum Tube Headphone Amplifier
Best vacuum tube amplifier for audiophiles seeking pure, high-fidelity sound.
Experience unparalleled audio fidelity with the Cayin HA-300, a Class A Vacuum Tube Headphone Amplifier designed for the discerning listener. This amplifier masterfully blends balanced and single-ended signal paths through custom transformers and a push-pull stage. Its distinctive two-box design houses a multi-stage tube-regulated power supply for pristine power delivery. Featuring premium tubes like the 300B and NOS RCA 22DE4 rectifiers, it offers selectable impedance outputs for perfect headphone matching. Enjoy pure sound thanks to point-to-point welding and silver-plated internal cables, all controlled by a precise 24-step potentiometer.
$4299.00
Owner Satisfaction
4.7
/ 5
Category Rank
52
/ 731
#52 in Headphone Amplifiers
Price vs Category Average
+208%
Above average
Power Amplification Tubes
3002
/ Full Music gold pins ceramic base B x
Who it's for
- Purists prioritizing signal purity and a silent noise floor
- Audiophiles seeking the legendary warmth of 300B tube sound
- Headphone collectors needing versatile power for diverse gear
Who should skip it
- Owners wanting a low-maintenance, set-and-forget audio solution
- Casual listeners on a strict budget
- Users with limited desk space or poor ventilation
Performance breakdown
Sonic Transparency
Point-to-point wiring delivers an exceptionally clean and uncolored signal path.
Impedance Versatility
Selectable output settings ensure perfect synergy with diverse headphone driver loads.
Power Delivery
The dual-box tube-regulated power supply provides rock-solid, noise-free current.
Build Integrity
Premium internal components and robust chassis design reflect high-end craftsmanship.
Volume Precision
The 24-step potentiometer offers tactile, repeatable control over listening levels.
Tube Warmth
The 300B output stage provides that signature lush, holographic tube character.
Key Specs
Power Amplification Tubes
Full Music gold pins ceramic base 300B x2
Voltage Amplification Tubes
Shuguang WE6SN7 replica of Western Electric x2
Tube Rectification
NOS RCA 22DE4 rectifier tubes x4
Inputs Supported
XLR balance and RCA singled-end
Volume Control
High-Precision 24 steps potentiometer
Internal Cabling
High quality shield silver-plated
Power Source
AC Powered
Output Impedance Matching
High, middle, and low settings
Features
- 300B Class A vacuum tube amplification
- Dual-box design with tube-regulated power
- Selectable headphone impedance outputs
- Balanced and single-ended input support
- Custom-designed input, output, and power transformers
- High-precision 24-step volume control
- Point-to-point wiring for signal purity
- Crafted VU meter for visual appeal
What customers say
The Cayin HA-300 earns high praise as a reference grade amplifier. Owners consistently celebrate its sonic performance, noting the 300B tubes produce a lush, musical sound that maintains exceptional detail. This unit expertly drives demanding headphones, delivering superb control, a vast soundstage, and natural timbre. Build quality is universally admired; it is considered magnificent audio engineering with a robust chassis and effective separate power supply to reduce noise. While the investment is substantial and the Class A design generates significant heat, the consensus is that the HA-300 provides a transformative listening experience that justifies its premium position for those seeking peak tube amplification.
Know before you buy
The two-box design physically separates the sensitive audio amplification circuitry from the power supply. This isolation significantly reduces electromagnetic interference and noise, ensuring a cleaner, more stable signal path for your headphones.
The HA-300 features three selectable impedance settings—low, middle, and high—to ensure optimal power delivery. You should select the setting that most closely matches your headphone's rated impedance to achieve the best balance of volume, control, and sonic performance.
No, the HA-300 is a dedicated vacuum tube headphone amplifier and does not feature an integrated digital-to-analog converter. You will need to connect an external DAC or analog source to the XLR or RCA inputs to play your music.
Point-to-point wiring eliminates the need for printed circuit boards, allowing for shorter, more direct signal paths. This construction method minimizes signal degradation and interference, which contributes to the amplifier's high level of audio transparency and purity.
No, the HA-300 is designed exclusively as a headphone amplifier and does not include preamplifier outputs for external power amplifiers or active speakers.
Like all tube amplifiers, the 300B and 6SN7 tubes will eventually require replacement after several thousand hours of use, depending on your listening habits. The NOS RCA 22DE4 rectifier tubes are also replaceable, allowing you to maintain the unit's performance over many years.
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$4299