Cayin - HA-300MK2

Desktop Tube Amplifier
Sale price₹ 399,999 Regular priceMRP: ₹ 439,999

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1. What is a Pre-Order product?
A Pre-order product is a product that we especially order for you from the brand. Once you place an order with us, we will order it from the brand for you.

2. How do I know when the product will be delivered?
There is a rough timeline on the product availability and once it has been confirmed with the brand, we will inform you.

3. Do you order the product from the brand as soon as I place the order?
We do not immediately order the product but add it in the upcoming order.

4. Will you be giving me updates?
Once we have ordered the product and have a confirmed timeline, we will give you an update.

5. I’d like to make changes to/cancel my order?
You can only cancel/make changes to your order until we place the order with the brand. Since the product is specifically being ordered for you, we will be unable to cancel/make changes once we order the product from the brand.

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7 Day Replacement Guarantee

In case you receive the Cayin - HA-300MK2 with a manufacturing defect, please raise a return request within 7 days of delivery.

However, if you receive an incorrect / damaged / different product or one with missing accessories, please raise a return request within 24 hours of delivery. In case you receive a product with a missing, incorrect, or faulty accessory, you will be given a replacement accessory instead of the entire product.

Please make sure that the product is in the original packaging with all the accessories it came with. We'll also need an unboxing video and images of the parcel to investigate about the discrepancy. You may be asked to share images of the product and the packaging received for us to determine the damage or defect prior to approving the return request. The free replacement will be shipped only once the original order is returned.

A replacement will be issued only if:

- It is found to be defective
- It is determined that the product was not damaged while in your possession
- The product is not different from what was shipped to you
- The product is returned in original condition (with brand’s/manufacturer's box, MRP tag intact, user manual, warranty card and all the accessories therein)


Warranty & Services

Don't sweat it, this Cayin - HA-300MK2 comes with a 1 Year warranty from Cayin that covers manufacturing defects. All products featured on Headphone Zone are backed by an original manufacturer's warranty.

Read more about Cayin's warranty in India.

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Ideal for Audiophiles

These DAC & Amps are designed for discerning music lovers. If audio quality is important to you, a set of DAC & Amps like these would be ideal.

You can expect these DAC & Amps to present you with a refined listening experience. The audio quality exhibited by these DAC & Amps is a beautiful mix of musicality, technical brilliance and high precision.

These DAC & Amps deliver a spacious & open soundstage that makes you feel you are sitting at a live concert. Experience the magic and delve into pure sonic tranquility!

Ideal for
Indoor Use

4-Pin XLR & 4.4mm
Balanced Output


Upto 6000mW
Power Output

Connect With

Volume Controls

If your DAC & Amps include volume controls or volume rockers, you can easily change the volume with a button press or volume knob turn.

DAC & Amps that have volume controls make its operation incredibly simple; turn up the volume on your smartphone or your source devices and then change the volume on DAC & Amps to the desired level.

This design feature allows you to have complete control over the desired volume according to your listening preferences.


The Cayin HA-300MK2 is the successor to the HA-300 and is a two-part tube amplifier for high-quality headphones. It is equipped with a 4.4 mm jack along with 4-pin XLR connections and a 3.5mm singled ended connector. Its external power supply has a complex circuit with four rectifier tubes and ensures a constant, equal voltage for all amplification stages. This power supply concept delivers clean power with minimal interference for the signal amplification of the main amplifier.



As one of the largest tube amplifier manufacturers in the world, Cayin designs and builds its transformers and ensures that even the minutest details are considered when developing them. The HA-300MK2 features 2 x 6SN7GTB, 2 x Gold Lion 300B, and 4 x 22DE4 tubes to deliver a powerful performance. It also uses a matched pair 300B Direct Heated Triode as output tube and a pair of 6SN7 as driver tube. The tube amplification circuit is operated in Single-ended mode, that’s why it is referred to as a SETA, and then feeds to a pair of output transformers for single-ended headphones, XLR-4 and 4.4mm balanced headphone output and one set of speaker terminals.



A lot of tube enthusiasts consider the Directed Heated Triode (DHT) as the holy grail of vacuum tubes for audio applications. DHT refers to Triode tubes that use the cathode as the filament and will heat the cathode directly during operation. The 300B featured in the HA-300MK2 offers an attractive tonal characteristic with high linearity during amplification. Cayin HA-300MK2 also adopts a matched pair of Gold Lion Genelex PX300B as output tube for HA- 300MK2. This is a low-noise audio triode that offers frequency extension with a natural, sensible and realistic sound signature. This tube is considered to be an excellent upgrade tube by many 300B users and is often referred to as the best of the 300B tubes.



Single-ended Triode Amplifier (SETA) is a vacuum tube-based design that uses a single-triode tube per channel to produce output without splitting the musical signal's plus/minus parts in each channel. Cayin recognised the beauty of SETA and HA-300MK2 employs the same 2-stage single-ended amplification with 6SN7 as the driver tube. It will boost the input signal to the appropriate level so that the 300B output tube will perform its second stage amplification at a very linear condition. For the HA 300MK2 implementation, Cayin uses a matched pair of Tung-Sol 6SN7GTB as a driver tube for almost the same reason as Genalex Gold Lion PX300B. These are super linear, low noise, high performance, highly reliable and natural-sounding driver tubes for SET amplification.



HA-300MK2 is a transformer-coupled SETA. The output from the 300B output tube will drive a pair of proprietary output transformers which support both headphone and speaker outputs. If the 300B triode tubes are the spirit of the HA-300MK2, the output transformers are the flesh and blood of the amplifier. For transformer-coupled design, it is straightforward to support both single-ended and balanced driven in the same circuit. Since balanced headphone amplification is feeding opposing polarity signals to the left and right ear-cup of your headphone. This is achieved through a specific method of winding the transformer so that the positive polarity (aka hot) and negative polarity (aka cold) are driven in opposite directions, delivering a fully balanced output from a single-ended tube amplification circuit.



The Cayin HA-300MK2 offers 3.5mm single-ended and two balanced headphone outputs: 4.4mm and XLR4, and these are optimised separately. The XLR4 output is a full-fetched output from the output transformer, while the 4.4mm winding is a level-matched, lower noise, lower power output with the same audio performance, making it more suitable for portable headphones. One of the features of Cayin vacuum tube amplifiers is the impedance matched headphone output. HA-300MK2 provides three headphone impedance settings, and the amplifier will optimise its output to handle the headphone loads according to the specified headphone impedance. Each impedance matched output is an independent secondary winding from the output transformers. Matching headphone impedance should produce a natural sound with well-defined bass reproduction.



The power supply for the Cayin HA-300MK2 uses a custom-built toroidal power transformer. This is a special circuit to supply different gain stages, and cayin has used 4 pieces of NOS RCA 22DE4 rectifier tubes to convert the incoming power source to DC for cleanest power with minimum interference for the amplification circuit. These are one of the best versions of the 22DE4 tube and when used as rectifier tubes in HA- 300MK2, they can easily last heavy usage of 5 to 10 years. The four 22DE4 are supposed to work independently from each other. HA-300MK2 also uses a custom make silica gel shock absorber as an anti-shock buffer between critical tube components, chassis mainframe and tube socket, eliminating the microphonic effect of the 300B DHT effectively and providing quiet and realistic playback from sensitive headphones.

1 Year Warranty

Don't sweat it, this Cayin - HA-300MK2 comes with a 1 Year warranty from Cayin that covers manufacturing defects. All products featured on Headphone Zone are backed by an original manufacturer's warranty.

Read more about Cayin's warranty in India.

Elevating Hi-Fi Experiences Since 1993

Founded in 1993, Zhuhai Spark Electronic Equipment Co., Ltd. has been dedicated to perfecting audio equipment under the brand name Cayin. With a commitment to delivering top-notch Hi-Fi products, Cayin embeds cultural richness into its audio range, catering to diverse budgets to make premium music experiences accessible. From tube amplifiers and CD players to speakers, Cayin maintains a consistent benchmark of quality, ensuring a compelling price-to-performance ratio across its offerings.

In 2013, Cayin expanded its horizons into personal audio, unveiling a line of Digital Audio Players (DAP) and desktop audio products. The brand further diversifies its portfolio with portable audio products, including amplifiers and in-ear monitors, empowering users with a broad spectrum of audio choices.

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