CAYIN HA-300MK2

Direct Heated Triode Vacuum Tube Headphone Amplifier

€ 5.480,00 Price include 21% VAT Price exclude VAT € 4.528,93

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Tube Amplifier Holy Grail - The Pursuit of Direct Heated Triode (DHT)

DHT refers to triode tubes that use the cathode as the filament and will heat up the cathode directly.

Minimal approach, offers stellar dynamic, transient and transparent, extremely well-received by audiophiles.

A challenge for headphone applications. Low tolerance to shock and vibration, sensitive to hum/interference.

The Irresistible 300B

Purist’s One-Way Ticket - Less is More

Single-ended Triode (SET) Amplifier uses a single triode

Vacuum tube to produce amplified output without splitting the musical signal into parts.

2-stage amplification, a pair of driver tube amplifies signal voltage so that the 300B output tube will perform its amplification at a very linear condition.

Simplicity circuit design. Displace the beautiful tone of your vacuum tubes without any cancellation.

Single-ended Driver Stage

Tube Regulated Power Supply - 2-Boxes Design

Outboard Power Supply minimize ripple effect, offer a clean, low-noise power to amplification circuit.

Multi-stage tube regulated power supply circuit, feed power to different amplification stages independently.

New Old Stock (NOS) Rectifier Tubes

HA-300MK2 uses 4 x NOS 22DE4 from RCA, one of the best versions of 22DE4 available in tube market

Convert incoming power source to DC current, provides cleanest power with minimum interference for the amplification circuit.

• Unlike output tubes, rectifier tubes don’t involve heavy lifting load, they can last very long without deteriorate.

• No matching requirement, replace on per piece based.

Premium Vacuum Tubes

Driver Tubes: Tung-Sol 6SN7GTB (Matched Pair)

Output Tubes: Genalex PX300B (Matched Pair)

Rectifier: NOS RCA 22DE4 x 4

Transformer-coupled Design

Balanced Driven from Single-ended Triode Amplifier

The 300B SET output drives a pair of proprietary output transformers, support both headphones and speakers.

The secondary winding of the output transformers provide an alternative phase and compose a balanced output, enables balanced driven from an SET amplification circuit.

Both single-ended and balanced headphone output are "original" outputs from the transformers.

In-house Designed and Winded Transformers

This Is All You'll Ever Need

Impedance Matched Phone Out

Optimized its output to handle the headphone loading according to three headphone impedance settings Low (L): 8Ω~64Ω; Medium (M): 65Ω-250Ω; High (H): 251Ω~600Ω.

Matching headphone impedance should produce a natural sound with well-defined bass reproduction, it is different from gain control of solid state amplifier.

Planar Headphones are more sensitive to impedance matching than dynamic headphones but users can try out different impedance settings.

Carefully Optimized Headphone Outputs

HA-300MK2 offers three headphone outputs: 6.3mm single-ended, 4.4mm balanced, and 4-pin XLR balanced.

The XLR4 output is a full-fetched output but the 4.4mm output is optimized for wider range of headphones, including high sensitivity portable headphones.

• 4.4mm is level-matched, lower noise, lower power output with the same audio performance

• at LOW headphone impedance, the 4.4mm output delivers roughly 70% of 4-pin XLR output only.

Professionally Precision

Low noise low distortion electronic controlled resistor ladder analogue volume controller JRC MUSE72320V, commonly used in high-end preamplifiers and streamers.

4-channel in one integrated controller offers high precision and zero channel imbalanced.

ALPS balanced potentiometer as 41-steps encoder to provide precise and intiuative control that we are all familiar with.

Interface Facilitates Functions

Quick-release Connection

Lock-on & quick-release aviation grade copper connectors.

Silver plated Teflon umbilical cable connects between outboard power supply and amplifier circuit.

Dual Inputs

Balanced (XLR) and Single-ended (RCA) to cover a variety of inputs.

Balanced input will go through a pair of input transformers, the + and – half cycle will merge to become a single-ended signal.

Enhance Your Daily Usage

Anti-Interference Improves Listening Experience

Custom-made silica gel shock absorbers between critical tube components, chassis mainframe and tube socket, remove microphonic effectively.

Reinforcing shielding of transformers and effective circuit layout to minimize interference.

Delay Can Be Desirable

60sec startup delay circuit.

Enhances circuit protection and minimizes pop noise during startup.

The Art of Black Finishing

13.5mm brushed Aluminum-Magnesium Alloy front panel, added strength and corrosion resistance to the amplifier.

The panel is black anodized, it is extremely durable and protect the amplifier from scratches.

The Hidden Details

The chassis and transformer pots are treated by our proprietary 14 rounds of crafting process composed of scratch, spray, sanding and baking.

The high gross final finishing endows a refined and delicate texture as well as protecting the amplifier from years of long service.

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CAYIN HA-300MK2

Direct Heated Triode Vacuum Tube Headphone Amplifier