Cayin C9ii Mobile Tube Headphone-Amp

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RRP 2.698,00 €

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Cayin C9ii Mobile Tube Headphone-Amp

Portable tube headphone amplifier for your pocket


When Cayin released the first generation of the C9 portable headphone amplifier in 2021, it quickly gained recognition among audiophiles. Three and a half years later, we have developed the C9ii to meet the highest standards so that you can hear your music as it was originally intended - with all its depth and emotion.

Audio circuit with the groundbreaking 5th generation Nutube 6P1

Imagine experiencing music in a new dimension - this is what the C9ii allows you to do, equipped with the revolutionary fifth generation Nutube 6P1 vacuum tube. Cayin has integrated this innovative technology into a variety of its products, from the N8 to the C9 to the N30LE and now also in the C9ii. But what makes this vacuum tube so special? In a compact and energy-efficient format, it unfolds the warmth and musicality of classic tube amplifiers and gives every note a fascinating sound texture. Experience how the natural character of the music comes to life and the emotional depth of each recording is preserved.

Switchable plate voltage - your personal sound style

Have you ever thought about how much influence the plate voltage has on the sound? After years of intensive research and technical refinement, Cayin has enriched the C9ii with a selectable plate (plate) voltage function. This function gives you the choice between two levels: high and low. Do you want a softer, warmer sound reproduction? Then choose the low setting! Or do you prefer a more dynamic, detailed performance? Then the high voltage is just right for you! This flexibility not only inspires audiophiles, but also every music lover who wants to optimally drive their high-quality headphones in order to bring out the subtleties of each recording.

Fully symmetrical headphone amplifier - sound in perfection

But that's not all. The Cayin C9ii has a fully symmetrical amplifier design. This modern circuit architecture ensures unparalleled sound fidelity and efficient performance. Distortion is minimized, the dynamic range is expanded and channel separation is increased. The balanced circuitry reduces crosstalk between channels, resulting in a clear soundstage and precise stereo imaging. The C9ii offers you detailed and nuanced music reproduction that will captivate even the most demanding audiophiles. What's more, an integrated precision control circuit allows the headphone amplifier to operate in various modes - from NFB/LFB to Class A/Class AB to Hyper, Single-Ended and balanced. What sound variations would you like to experience today?

Feedback and fine-tuning circuits - your personal sound journey

Have you ever wondered how different sound characteristics are created? For the C9ii, Cayin engineers have developed two special sound tuning circuits:
  • 1. Modern sound: High negative feedback significantly reduces total distortion (THD) and creates a clear, clean tube sound with minimal thermal noise.
  • 2. Classic sound: This eliminates negative feedback; each stage works independently through local feedback. The result: a sound quality that is not only heard, but felt! The harmonic distortions of the tube amplification give the music a gentle, musical soul that makes the listening experience an unforgettable pleasure.
Innovative power supply design: Efficiency on a new level!

How important is optimal performance to you? The C9 series power supply design is the key to an incomparable sound experience. Our discrete headphone power amplifier circuits, the C9 and C9ii, are powered by powerful 3,400mAh batteries. Why is this crucial? Because it allows us to bypass DC/DC voltage gain conversion, creating the ideal power environment for analog circuits. With careful filtering and decoupling using high-quality components such as WIMA metal film capacitors and Panasonic POSCAP polymer tantalum capacitors, we guarantee not only the highest sound quality, but also an extended battery life. Ideal for all music lovers who don't want to miss out on first-class sound on the go!

High-quality housing construction: style meets functionality!

What makes a headphone amplifier really exceptional? The Cayin C9ii impresses not only with its robust and elegant housing construction, but also with its superior heat dissipation. The transistors in our four-channel discrete high-performance amplification are the main source of heat - but don't worry! Thanks to innovative graphene thermal plates and aluminum alloy heat sinks, this heat is efficiently dissipated and ensures even temperature distribution. So you can be sure: even with intensive use, the performance remains constant and reliable.

With the Cayin C9ii we are setting new standards in sound quality, design and functionality. Experience the latest technology paired with audiophile details in a compact, portable format. Are you ready for the ultimate listening pleasure? Immerse yourself in a world full of energy and liveliness - your ears will thank you!

Specifications
  • Tubes: 2 x KORG Nutube 6P1
  • Battery life: from 8 hours in tube hyper mode to 17.5 hours in (transistor) AB mode
  • Inputs: Jack: 1 x 3.5 mm, 1 x 4.4 mm (balanced)
  • Special features: switchable between tube or transistor mode
  • Dimensions (W x H x D): 8.8 x 16.5 x 3.0 cm
  • Weight: 650 grams
You receive a 2 year warranty from the date of purchase for all of our high quality hifi-products.

If you observe any problem while using the product, you have the possibility to contact our friendly service team.

You can also easily manage your guarantee concern – without being obliged to – under the section My Account.