The Incredible Cayin N8ii
Master Quality Digital Audio Player

Features

• What's in the Box?
  • N8ii Digital Audio Player
  • N8ii Leather Case
  • 4.4mm to 2.5mm (F) Adapter
  • 3.5mm to 2.5mm (F) Adapter
  • USB-C Cable
  • Tempered Glass Screen Protector
  • User Manual
  • Hi-Res Sticker x2

Dual Flagship DAC Chipset
ROHM BD34301EKV x2
The digital audio circuit is designed around two ROHM BD34301EKV chipsets. It is the first time for the chipset to be implemented in a portable player and each chip is operated in mono mode which maximises its performance.

Two low-pass antialiasing filters (PCM mode) and three DSD Filters are available to fine tune sound signature.

The digital audio circuit around two flagship chipsets also features:
- 2 Femtosecond Crystal Oscillators
with extremely low phase noise (-100dBc) to ensure high precision low jitter digital playback.
- 2x2 Current to Voltage I-V Converter Network
as low noise high current output stage of the ROHM DACs.
- 6-layer PCB
enhanced signal isolation for lower the background noise and interference to critical components such as oscillators.

Dual Vacuum Tube
Available for Single-ended and Balanced Phone Out
Fully balanced vacuum tube timbre circuit through two pieces of KORG Nutube 6P1 Double Triode. Both Nutubes are rigorously tested and matched before installation.

Delivers smooth and sentimental musical through 3.5mm single-ended or 4.4mm balanced headphone output.

Zero Gain Negative Feedback Loop circuit delivers strong current and impressive handling at difficult load. The transparent, transient and extension that rival the best solid state circuit but remain warm, smooth and involving.

Innovative Suspension Installation
Exclusively designed system to minimize mechanical shock and vibration to eliminate microphonic of the Nutubes.

Compartmentalized CNC Aluminium Chassis to create an isolated, fully damped chamber for Nutube installation.

Flexible Printed Circuit to minimize shock transmission to and from main PCB.

In-house designed Shock-absorption Silicon Housing to hold and shelf the Nutubes.

Suspension Pin to mount the Nutubes and Silicon Housing into the designated chamber securely.

Dual Output Mode
P (Standard) | P+ (High Output)
Regulate the operational voltage of headphone amplification circuit to offer two distinctive outputs.

P+ will increase output and handling power with a more saturated sound signature.
Single-ended Phone out: 720mW (16ohm)
Balanced Phone out: 1200mW (16ohm)

Dual Amp. Operation Mode
Class A: Low distortion, optimum playback condition. Silky smooth, warn and lush. Best fit for sentimental music with lots of detail and macro dynamic. This is the vocal to die for.
Class AB: Higher efficient and dynamic. Clean, tight, extended and authoritative slam. Best fit for music with high dynamic range. This will offer liveliness to wish for.

The Dual Amplifier Operation Mode allows you to switch between Class A and Class AB modes instantly through the pull down menu.

Choose the sound signature to fit your personal preference of sound, music genres, and/or matching with different IEM/headphones.

Fully Discrete HeadAmp
Uncompromised Design
4-channels discrete circuit with Low-noise audio grade JFET (Junction gate Field-Effect Transistor) and BJT (Bipolar Junction Transistor).

Going discrete allows more room to fine tune sound signature and deliver superior performance over op-amp based design.

Uncompromised Implementation
To maintain all channels at almost identical gain for Class A amplification, we matched critical components and installed them to the PCB manually before reflow soldering.

Professionally Precision
Low noise low distortion electronic controlled resistor ladder analogue volume control from JRC, commonly used in audiophile preamp.

4-channel in one integrated controller offers higher precision, zero channel imbalance and power consumption than two stereo volume controllers.

Dedicated PVD gold-plated brass volume knob engraved with glamour 3{4} dodecagram, provides precise control and elegant presentation.

Dual Line Out
Both 3.5mm single-ended and 4.4mm balanced line out bypass the headphone amplification circuit completely.

With that, N8ii can serve as a high-quality analogue source for active speakers and portable/desktop amplifiers.

Desktop grade implementation, fits for amplifiers with high input impedance.

Maximum compatibility with configurable output levels.
- 3.5mm: 2.0V (High), 1.5V (Mid), 1.0V (Low)
- 4.4mm: 4.0V (High), 3.0V (Mid), 2.0V (Low)

Interference Madness
Comprehensive choice of inputs and outputs

Phone Output:
- 3.5mm Single-ended
- 4.4 Balanced

Unamplified Line Output:
- 3.5mm Single-Ended (dedicated)
- 4.4mm Balanced (shared with phone, switch in pull down menu)

Digital Interface:
USB Audio Transport (USB-C, Output)
USB Audio DAC (USB-C, Input)
I2S (Mini HDMI, Output)
S/PDIF Coaxial (Embedded USB-C, Output)
Bluetooth v5.0 - Codec Supported: LDAC, AAC, UAT TWS, SBC (supports both transmit and receive applications)

Optimum Thermal Structure
N8ii features a special designed thermal structure which allows the device to stay in an appropriate temperature even in long-term usage.

The nickel silver plate and graphite sheet attached to core components transfer heat to the CNC machined internal aluminium frame which works as a heat sink to direct the heat to all the edges simultaneously.

The structure maximises the thermal efficiency and ensures the device to maintain its best performance.

Bigger Screen, Easier to Manipulate
5" 1280x720 AMOLED screen, a perfect balance for user experience and power saving.

Multi-touch for simple and direct operation.

Double tap to wake.

Sensational to touch, Familiar to Operate
Precisely CNC machined aerospace aluminium alloy in finest sandblast finishing.

Physical playback control buttons as alternative to touch screen operation.

Carefully placed for single-handed operation, circular textured to enhance touch/press experience.

Multi-colour Smart Glowing Home Button
Sampling rate indicator during playback, doubled as Home/Back button during routine file/menu operations.

A Stable and High Performance System
64-bit Qualcomm Snapdragon 660, 6G DDR4 RAM and a high performance FPGA for proprietary coding.

Customised Android 9.0, Google Play pre-installed, free to install any music player or streaming app.

DTA (Direct Transport Audio) enables all installed applications to bypass SRC during local playback.

Massive Storage for Huge Music Library
128GB internal Memory.

Expandable local storage, supports one TF card up to 1TB.

Direct playback from USB OTG Storage.

Discover Music with Online Streaming
2.4Ghz/5GHz Dual band Wi-Fi.

Enhancing WiFi connection by using the Aluminium frame as a wireless antenna.

Also supports online OTA firmware update.

Browse and Playback Remote
Connects to your mobile phone via HiByLink

Control Volume and playback remote.

Manage music file, search and create playlist from HiByMusic App.

Long Playback Duration Despite High Output Power
Enormous 3.8V 10000mAh Lithium battery with a carefully tuned power management system.

Continuously up to 11 hours at 3.5mm and 10 hours at 4.4mm music playback.

Qualcomm QuickCharge 3.0
Charges from 20% to 80% in around 2 hours.

Charges from 0 to full power in around 4.5 hours.

Other Power Management Features
Charging limit (customisable between 50~100%).

Idle Shutdown (customisable between 1~60 minutes when enabled).

Enable or disable charging when functioning as USB DAC.