















Cayin - C9ii
Portable Headphone AmplifierGET 18% GST INPUT
One of the reasons headphones and earphones in India are more expensive than overseas is
because of the Goods & Services Tax in India.
Don't let the GST input go to waste
especially if you can avail an offset.
All products sold on Headphone Zone carry
a GST compliant invoice and all products sold include an 18% GST.
Simply enter
your GST number at the time of checkout.
Browse EMI Plans
Low Cost EMI Options through Credit Cards
ICICI Bank
3
Low Cost EMI
₹ 75,296
₹ 5,889
₹ 4,746
6
Low Cost EMI
₹ 38,395
₹ 10,373
₹ 8,393
9
15.99%
₹ 26,102
₹ 14,916
12
15.99%
₹ 19,960
₹ 19,517
18
15.99%
₹ 13,827
₹ 28,893
24
15.99%
₹ 10,771
₹ 38,500
HDFC Bank
3
Low Cost EMI
₹ 75,297
₹ 5,893
₹ 4,746
6
Low Cost EMI
₹ 38,396
₹ 10,380
₹ 8,393
9
16%
₹ 26,103
₹ 14,926
12
16%
₹ 19,961
₹ 19,529
18
16%
₹ 13,828
₹ 28,911
24
16%
₹ 10,772
₹ 38,525
SBI Bank
3
Low Cost EMI
₹ 75,359
₹ 6,078
₹ 4,887
6
Low Cost EMI
₹ 38,287
₹ 9,725
₹ 7,831
9
15%
₹ 25,997
₹ 13,978
12
15%
₹ 19,857
₹ 18,282
18
16%
₹ 13,828
₹ 28,911
24
16%
₹ 10,772
₹ 38,525
Axis Bank
3
Low Cost EMI
₹ 75,297
₹ 5,893
₹ 4,746
6
Low Cost EMI
₹ 38,396
₹ 10,380
₹ 8,393
9
16%
₹ 26,103
₹ 14,926
12
16%
₹ 19,753
₹ 17,038
18
16%
₹ 13,828
₹ 28,911
24
16%
₹ 10,772
₹ 38,525
Other EMI Options through Credit Cards
Citi Bank
3
14%
₹ 75,051
₹ 5,153
6
14%
₹ 38,178
₹ 9,070
9
16%
₹ 26,103
₹ 14,926
12
16%
₹ 19,961
₹ 19,529
18
16%
₹ 13,828
₹ 28,911
24
16%
₹ 10,772
₹ 38,525
Kotak Mahindra Bank
Tenure
Interest%
Installment
Interest
3
16%
₹ 75,297
₹ 5,893
6
16%
₹ 38,396
₹ 10,380
9
16%
₹ 26,103
₹ 14,926
12
16%
₹ 19,961
₹ 19,529
18
16%
₹ 13,828
₹ 28,911
24
16%
₹ 10,772
₹ 38,525
RBL Bank
3
13%
₹ 74,928
₹ 4,784
6
14%
₹ 38,178
₹ 9,070
9
15%
₹ 25,997
₹ 13,978
12
15%
₹ 19,857
₹ 18,282
18
15%
₹ 13,725
₹ 27,044
24
15%
₹ 10,667
₹ 36,009
Standard Chartered Bank
3
13%
₹ 74,928
₹ 4,784
6
13%
₹ 38,069
₹ 8,417
9
14%
₹ 25,892
₹ 13,032
12
14%
₹ 19,753
₹ 17,038
INDUSIND Bank
3
14%
₹ 75,051
₹ 5,153
6
14%
₹ 38,178
₹ 9,070
9
15%
₹ 25,997
₹ 13,978
12
15%
₹ 19,857
₹ 18,282
18
15%
₹ 13,725
₹ 27,044
24
15%
₹ 10,667
₹ 36,009
HSBC Bank
3
12.50%
₹ 74,866
₹ 4,599
6
12.50%
₹ 38,015
₹ 8,090
9
13.50%
₹ 25,840
₹ 12,560
12
13.50%
₹ 19,701
₹ 16,417
18
13.50%
₹ 13,570
₹ 24,257
YES Bank
3
13%
₹ 74,928
₹ 4,784
6
13%
₹ 38,069
₹ 8,417
9
14%
₹ 25,892
₹ 13,032
12
14%
₹ 19,753
₹ 17,038
18
15%
₹ 13,725
₹ 27,044
24
15%
₹ 10,667
₹ 36,009
Bank of Baroda
3
13%
₹ 74,928
₹ 4,784
6
14%
₹ 38,178
₹ 9,070
9
14%
₹ 25,892
₹ 13,032
12
15%
₹ 19,857
₹ 18,282
18
15%
₹ 13,725
₹ 27,044
24
16%
₹ 10,772
₹ 38,525
American Express
3
14%
₹ 75,051
₹ 5,153
6
14%
₹ 38,178
₹ 9,070
9
14%
₹ 25,892
₹ 13,032
12
14%
₹ 19,753
₹ 17,038
18
15%
₹ 13,725
₹ 27,044
24
15%
₹ 10,667
₹ 36,009
Talk to a Headphone Guru
Club Audiophile
Join Club Audiophile to begin your pursuit of great sound. Earn points and save on every purchase.
READ MORE

Why Cayin is Special
Designed in China
Established & Reputed
Trust us, our reputation speaks for itself 🏆!
I believe that when a brand has decades of proven excellence, you can invest with confidence knowing your purchase is backed by years of audio engineering expertise. These products come from manufacturers with extensive histories of innovation and unwavering commitment to sonic excellence. Think of them like luxury watch brands - their reputation has been earned through decades of consistent quality and innovation.
With their extensive history of innovation and countless satisfied customers worldwide, you can be confident your investment is backed by proven audio engineering expertise and industry leadership 📈.
When you see "🎖️ Established & Reputed" products, expect time-tested excellence from manufacturers who've consistently demonstrated mastery in audio engineering for generations.
Revered by Audiophiles
Audiophiles can be really picky 😤, and if the audiophile community says something sounds good, you can bet it's exceptional! I believe that earning audiophile reverence is like getting a standing ovation from music critics - it doesn't happen unless you've truly achieved something special. This audio gear has earned widespread acclaim from audiophiles worldwide, a community renowned for exacting standards and unwavering commitment to high-fidelity reproduction.
These discerning enthusiasts particularly value its extraordinary precision in sound reproduction and remarkable capability to create thoroughly immersive listening experiences. The audiophile community's endorsement carries significant weight because of their extensive experience with high-end equipment 🏆.
When you see "🙌🏻 Revered by Audiophiles" products, expect audiophile-grade excellence that satisfies even the most demanding listeners and consistently exceeds the highest standards.
Born in 1993
Why we love this DAC/Amp
I Am Worth It
For the most passionate audiophiles who demand nothing less than audio perfection 💎, these exceptional products represent the absolute pinnacle of sound reproduction technology. When I designate something in this category, it means we've identified something truly extraordinary - a piece of equipment that transcends conventional standards of excellence. Think of these as the Rolls-Royce of audio - masterpieces that don't simply meet expectations but establish entirely new benchmarks for what's possible.
These aren't just premium products; they're timeless investments in musical excellence whose value transcends ordinary performance metrics. Each represents a fundamental redefinition of what's achievable in sound reproduction, incorporating innovations and craftsmanship that justify their exclusive status.
When you see "👑 I Am Worth It" products, understand that you're experiencing audio perfection - these masterpieces cater to those who recognise that true excellence knows no compromise.
Serious Audiophiles Only
For those who have ventured deep into high-fidelity audio 🎯, the pursuit of sonic excellence becomes an endless journey of discovery and refinement. I believe that serious audiophiles demand equipment that can satisfy the most exacting standards and deliver performance that pushes boundaries. These products represent the pinnacle of acoustic engineering, incorporating advanced technologies and meticulous craftsmanship that enable them to reproduce music with utmost fidelity.
Each product has undergone rigorous evaluation to ensure it delivers exceptional performance that discerning listeners demand, from precise frequency response to impeccable detail retrieval and sophisticated sound staging. These devices incorporate premium components and engineering excellence that justify their position at the apex of audio performance.
When you encounter "🦈 Serious Audiophiles Only" products, expect uncompromising performance that satisfies the most demanding requirements and elevates critical listening to new heights.
Battery Life
In my experience, battery life is one of those things that separates a good day from a frustrating one. It's like having a fuel gauge you can rely on — longer battery life means less charging and more uninterrupted music. Whether you're on a flight or just commuting across town, this is one spec you don’t want to overlook 🔋.
Technically, battery life refers to the hours your device can play music on a single charge. Today’s headphones and DACs can range from 4 to 40+ hours, depending on things like Bluetooth codec, volume, and active features like ANC. More battery life also means better travel and portability, though it might come at the cost of size or weight.
When you see '⏳ Battery Life' products, expect: longer listening sessions, fewer charging breaks, and stress-free portability for music that goes the distance.
Battery Capacity
I usually think of battery capacity like the size of your water tank — it determines how long the tap can run before drying up. In audio gear, higher capacity means more playtime, more power for your amp section, and better performance during high-demand usage 🧠. It’s especially important if your gear also powers powerful drivers or amps.
Measured in mAh (milliamp-hours), battery capacity helps you gauge how long your headphones, DAC, or amplifier will last between charges. Devices with higher capacity (like 3500mAh+) are ideal for extended use or when you’re away from a power source. Just know, larger capacity often means longer charging time and a slightly bulkier design.
When you see '🔋 Battery Capacity' products, expect: more power and longer playtimes — ideal for travel, long workdays, or heavy use without worrying about recharging.
Connect With Cable
In my experience, there’s still nothing like the dependability of a wired connection when it comes to audio 🎧. I love describing it as the direct flight of music — no delays, no turbulence. When a product says “Connect with Cable,” it means you’re getting the most reliable signal path, with zero wireless compression and minimal interference.
Here’s what’s actually happening: a physical cable transmits uncompressed analog or digital signals directly from your source to your gear. This results in lower latency, no signal drops, and consistently better sound — especially when paired with a good DAC or amp. It’s ideal for critical listening, gaming, and professional use. The trade-off? You’re tethered — but for a lot of audiophiles, that’s a small price to pay for sonic purity.
When you see '🔗 Connect With Cable' products, expect: pure, uninterrupted sound quality that lets your gear perform at its full potential — perfect for focused, high-fidelity listening.
Built like a Tank
Durability concerns? Rest assured 💪.
I tend to describe these products as audio equipment that's built to survive anything you can throw at them. These headphones incorporate high-grade metal components and reinforced design elements that ensure they can handle demanding conditions while maintaining structural integrity. Think of them as the military-grade vehicles of the audio world - over-engineered for reliability and built to last decades, not just years.
The metal construction provides exceptional strength and longevity while contributing to a premium feel that serious audio enthusiasts appreciate. Whether you're a professional who needs reliable daily-use equipment or someone who values long-term investment in audio gear 🏗️.
When you encounter "🪖 Built like a Tank" products, expect unmatched robustness and durability you can count on for years of intensive use.
Why it Sounds Amazing
Power Output
I like to think of power output in audio gear like engine horsepower, it determines how much muscle your setup really has 💪. Whether you’re trying to drive a pair of power-hungry planar headphones or just want headroom for dynamic peaks, power output is the spec you want to check first.
Technically, it refers to the amount of electrical power (measured in mW or Watts) an amp or DAC/Amp combo can deliver to your headphones. More power means better control, improved dynamics, and the ability to handle demanding gear without distortion. But more isn’t always better, too much power with sensitive IEMs can introduce hiss or harshness.
When you see '🚀 Power Output' products, expect: strong driving capability, better dynamics, and optimal performance with headphones that need serious juice to shine.
Balanced Output
I often say balanced output is like using both hands to carry something heavy — it distributes power evenly and keeps things stable. In audio gear, balanced output helps reduce unwanted noise and interference, especially over longer cables. Think of it as a cleaner, more efficient way to transmit your music, ideal for anyone using high-end DACs, amps, or studio-grade headphones 🎧. You’ll typically find it on gear with XLR or 4.4mm connectors, and it's a must-have if you’re chasing that ultra-clean signal path.
Here’s what’s actually happening: a balanced output uses two separate signals, one inverted, so when interference is picked up along the cable, it gets cancelled out when the signals are recombined. The result? Cleaner audio, better dynamic range, and more power output — especially when paired with balanced headphones. The trade-off? You’ll need gear that supports balanced connections on both ends to really enjoy the benefits.
When you see '⚖️ Balanced Output' products, expect: ultra-low noise, more headroom, and better synergy with high-impedance headphones or sensitive IEMs — ideal for serious listening setups.
Cayin Introduces The C9ii- An Extraordinary Portable Headphone Amplifier






















Dual Headphone Output
Cayin C9ii features dual headphone output options featuring 4.4mm Balanced and 3.5mm Single-ended to connect with various devices.
Dual Input Option
Cayin C9ii to pair with various audiophile grade devices, it features 4.4mm Balanced and 3.5mm Single-ended input ports.
Pre-In & NFB Selector
Cayin C9ii features a Pre-In and negative feedback selector and indicator for a customised music listening experience.

Accessories to Get you Started
All You Need To Know About The Cayin C9ii
4.4mm TRRRS (Balanced)
4.4mm TRRRS (Balanced)
Solid State: Toshiba 2SK209 JFET x4
Battery Duration:
Timbre: Solid State
Mode: Class AB
3.5mm (Single-Ended): ~17.5 Hours
4.4mm (Balanced): ~13.5 Hours
Mode: Class A
3.5mm (Single-Ended): ~15 Hours
4.4mm (Balanced): ~10.5 Hours
Mode: Hyper
3.5mm (Single-Ended): ~14.7 Hours
4.4mm (Balanced): ~10.2 Hours
Timbre: Vacuum Tube (Modern)
Mode: Class AB
3.5mm (Single-Ended): ~12.5 Hours
4.4mm (Balanced): ~9.5 Hours
Mode: Class A
3.5mm (Single-Ended): ~11.5 Hours
4.4mm (Balanced): ~8.2 Hours
Mode: Hyper
3.5mm (Single-Ended): ~11.2 Hours
4.4mm (Balanced): ~8 Hours
Charging:
Condition: Standard Charger (5V-2A)
Time: ~6.5 Hours
Condition: Quick Charge QC3.0/PD2.0 (9V2A)
Time: ~3.8 Hours
Parameter:
16 Ohms: 1200 mW
32 Ohms: 700mW
150 Ohms: 160mW
300 Ohms: 80mW
Frequency Response:
Tube: 20Hz-80kHz(±0.5dB)
Solid State: 11Hz-80kHz(±0.5dB)
Test Condition: High/Low Gain
Parameter:
16 Ohms: 4100mW
32 Ohms: 2600mW
150 Ohms: 640mW
300 Ohms: 320mW
Frequency Response:
Tube: 20Hz-80kHz(±0.5dB)
Solid State: 11Hz-80kHz(±0.5dB)
Test Condition: High/Low Gain
Solid State
SE>SE: 0.002%
BAL>SE: 0.002%
SE>BAL: 0.001%
BAL>BAL: 0.001%
Vacuum Tube
SE>SE: 0.030%
BAL>SE: 0.015%
SE>BAL: 0.060%
BAL>BAL: 0.007%
Test Condition: @1kHz, 1Vrms, A-Weighted
Solid State
SE>SE: 121dB
BAL>SE: 123dB
SE>BAL: 121dB
BAL>BAL: 124dB
Vacuum Tube
SE>SE: 112dB
BAL>SE: 116dB
SE>BAL: 111dB
BAL>BAL: 115dB
Test Condition: 20Hz~20kHz, High Gain, A-Weighted
Solid State
SE>SE: 125dB
BAL>SE: 126dB
SE>BAL: 125dB
BAL>BAL: 127dB
Vacuum Tube
SE>SE: 118dB
BAL>SE: 120dB
SE>BAL: 117dB
BAL>BAL: 120dB
Test Condition: 20Hz~20kHz, Low Gain, A-Weighted
Solid State
SE>SE: 121dB
BAL>SE: 123dB
SE>BAL: 121dB
BAL>BAL: 125dB
Vacuum Tube
SE>SE: 112dB
BAL>SE: 115dB
SE>BAL: 111dB
BAL>BAL: 114dB
Test Condition: 20Hz~20kHz, High Gain, A-Weighted
Solid State
SE>SE: 124dB
BAL>SE: 125dB
SE>BAL: 125dB
BAL>BAL: 126dB
Vacuum Tube
SE>SE: 118dB
BAL>SE: 119dB
SE>BAL: 117dB
BAL>BAL: 120dB
Test Condition: 20Hz~20kHz, Low Gain, A-Weighted
Solid State
SE>SE: 75dB
BAL>SE: 75dB
SE>BAL: 97dB
BAL>BAL: 114dB
Vacuum Tube
SE>SE: 75dB
BAL>SE: 75dB
SE>BAL: 90dB
BAL>BAL: 110dB
Test Condition: @1kHz, A-Weighted
SE>SE: 1.5V
BAL>SE: 2.8V
SE>BAL: 1.5V
BAL>BAL: 2.8V
Test Condition: High Gain
SE>SE: 3.0V
BAL>SE: 5.6V
SE>BAL: 3.0V
BAL>BAL: 5.6V
Test Condition: Low Gain
Pre In
SE>SE: 2.1V
BAL>SE: 3.8V
SE>BAL: 2.1V
BAL>BAL: 3.6V
Test Condition: High Gain
SE>SE: 4.2V
BAL>SE: 7.5V
SE>BAL: 4.2V
BAL>BAL: 7.2V
Test Condition: Low Gain
SE>SE & BAL>SE: ≤95mOhms
SE>BAL & BAL>BAL: ≤190mOhms
Test Condition: High/Low Gain
Net Weight: 650g (±5g)
2. C9ii Battery Module (Mounted on the device)
3. CS-35C35II Single-Ended Interconnect Cable
4. CS-44C44II Balanced Interconnect Cable
5. Samsung INR18650-35E Batteries x4
6. Hi-Res Stickers
7. Type-C Cable
8. User Manual
Don't sweat it, this
Cayin - C9ii 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.

The Cayin C9ii is a showcase of advanced engineering, blending cutting-edge components and meticulous design to deliver a highly customizable and versatile portable amplifier. The C9ii combines flexibility, power, and performance
C9ii offers more than C9, making it a valuable investment. DAPs come and go, but a portable amp like C9ii should last you a long time to enhance any source you pair it up with.
Have a question? Get in touch!
Check out the most common questions our customers ask. Still have questions? Talk to our Headphone Gurus.

What is the warranty period on the Cayin C9ii and how do I claim warranty?
What are the amp modes in the Cayin C9ii?
What is the benefit of the five timbre settings?
What is the purpose of the adjustable anode voltage?
What input and output options does the Cayin C9ii offer?
What makes the design of the Cayin C9ii unique?

Other Details
Generic Name | Amp & DAC |
Importer Details | Importers Name: Ferrari Video Address: 63/18, 1st Main Road, Gandhi Nagar, Chennai - 600020 Contact No: 044-24420733 |
Net Quantity | 1 |
Manufacturer Details | Name: Zhuhai Spark Electronic Equipment Co.,Ltd. Address: No.9 Lianfa Road Shuanglin Zone Liangang Industrial Park Zhuhai City Guangdong Province China, Postcode: 519045 |
Package Contents | C9ii Dual Nutube Portable Headphone Amplifier C9ii Battery Module (Mounted on the device) CS-35C35II Single-Ended Interconnect Cable CS-44C44II Balanced Interconnect Cable Samsung INR18650-35E Batteries x4 Hi-Res Stickers Type-C Cable User Manual |