Cayin N3Ultra: Excellence in Portable Sound

The Cayin N3Ultra redefines portability with a fully customised operating system optimised for audio playback. This Hi-Res player integrates vintage JAN 6418 vacuum tubes into an audiophile design, providing an authentic, minimalist music experience. Compatible with 3.5mm Single-Ended and 4.4mm line outputs, the N3Ultra combines classic aesthetics with modern innovation.

Military Grade Tube Technology

Equipped with military-grade NOS Raytheon JAN6418 pentode vacuum tubes, the N3Ultra offers exquisite analogue reproduction through its 3.5mm and 4.4mm outputs. These tubes are protected within a shock-absorbing silicone housing and suspended vertically to minimise vibration and improve sound clarity.

Analogue Output Versatility

The N3Ultra excels in its ability to offer up to three different timbres on all its analogue outputs, thanks to an advanced timbre circuit that modifies the pentode tube grille connection, allowing the output distortion and impedance to be varied to suit different listening styles.

Diverse and Configurable Functions

This device functions not only as a dedicated player, but also as a DAC/Digital transport and amplifier for active loudspeakers. It offers balanced and single-ended outputs that can be configured for different output levels, ensuring maximum compatibility with a variety of audio devices.

Exceptional Sound Quality and Volume Control

Incorporates a 10-band parametric equaliser that allows deep customisation of the sound, adapting it to the user's individual preferences and enhancing the personalised audio experience.

Power and Performance

Equipped with a dual AK4493S DAC operating in mono mode to maximise audio clarity and stereo separation. A powerful 4500 mAh lithium battery ensures long battery life and supports fast charging with QC 3.0, enabling efficient recharging.

Touchscreen and Ergonomic Design

The N3Ultra features a 4.1" touch screen that provides clear viewing and intuitive operation, complemented by physical knobs and buttons for quick and easy control. Its lightweight and compact design makes it perfect to carry in your pocket and use anywhere.

A Complete Portable DAP

This device is not just a player, but a true portable audio station that expands storage via USB OTG and offers a custom Android-based interface for smooth, responsive control. A side-lit tube window adds a touch of ambience as you enjoy your music.

Package Contents

Cayin N3Ultra

Silicone protective case

Tempered glass protector

USB-C cable

User manual

Hi-Res Audio Stickers

General Specifications

DAC: AK4493SEQ x 2

Vacuum Tube: Raytheon JAN6418 x 2

MCU: Snapdragon 425

System: Custom Android 8.1

Timbre Circuit: Gen3 Vacuum Tube audio circuitry

LPF: Dual Op-Amp x 2

Lossless: DTA bypass Android SRC

Memory: 2GB RAM

Headphone Amplifier: Parallel Amplification

Display: 4.1" (720 x 1280) TFT multi-point touch screen

Headphone output: 3.5mm (Single-Ended) / 4.4mm (Balanced, Shared)

Line output: 3.5mm (Single-Ended) / 4.4mm (Balanced, Shared)

Digital Interface: USB Audio / SDIF Coaxial

USB Type-C: USB 3.1, OTG, Digital Audio QC3.0

Dimensions: 125 x 65.5 x 19.5 mm

Weight: 204g

Battery life: up to 13.5h

Charging time: 3.5h

Standard charger: 5V-2A

Fast charge: QC 3.0

Digital interface specifications

USB Audio output:

Connector: USB-C

PCM up to 32bit/768kHz

DSD up to DSD512 (Native) / DSD256 (DoP) / PCM 88.2 kHz (D2P)

USB DAC:

Connector: USB-C

PCM up to 32bit/768kHz

DSD up to DSD512 (Native) / DSD256 (DoP)

Systems: Windows, MacOs, Android, iOS

USB Class 2.0 asynchronous

S/PDIF:

Connector: USB-C (75 Ohms)

PCM: up to 24bit/192 kHz

DSD: up to DSD64 (DoP)

Headphone output 3.5mm

Power rating (@32 Ohms) 3.5mm: 250mW

Power rating (@32 Ohms) 4.4mm: 600mW

Frequency response: 20 Hz-20kHz

THD+N (1kHz, 32 Ohms, A-Weighted): 0.008% / 2%.

Dynamic range:

3.5mm solid state: 120dB

3.5mm vacuum tube: 113dB

4.4mm solid state: 121dB

3.5mm vacuum tube: 113dB

SNR:

3.5mm solid state: 120dB

3.5mm vacuum tube: 113dB

4.4mm solid state: 121dB

4.4mm vacuum tube: 113dB

Channel separation:

3.5mm solid state: 77dB

3.5mm vacuum tube: 76dB

4.4mm solid state: 116dB

4.4mm vacuum tube: 92dB

Line output specifications

Power rating 3.5mm: High 2.1V / Medium 1.6V / Low 1.0V

Rated power 4.4mm: High 4.2V / Medium 3.2V / Low 2.0V

Output Impedance: 100 Ohms / 200 Ohms

Frequency response: 20 Hz-20kHz

THD+N (1kHz, 32 Ohms, A-Weighted): 0.004% / 2.0% - 20Hz-20kHz / 20Hz - 20kHz

Dynamic range:

3.5mm solid state: 122dB

3.5mm vacuum tube: 113dB

4.4mm solid state: 125dB

3.5mm vacuum tube: 113dB

SNR:

3.5mm solid state: 122dB

3.5mm vacuum tube: 113dB

4.4mm solid state: 125dB

4.4mm vacuum tube: 113dB

Channel separation:

3.5mm solid state: 100dB

3.5mm vacuum tube: 96dB

4.4mm solid state: 122dB

4.4mm vacuum tube: 98dB

Audio format specifications

DSD:

DSF / DFF / SACD-ISO: 1bit

Sampling frequency: 2.8MHz - 22.6MHz

SACD-ISO: 1bit / 2.8MHz 

PCM:

WAV: 16 bit - 32 bit / 32KHz - 768kHz

AIF/AIFF: 16 bit - 32bit / 32KHz - 768kHz

FLAC: 16 bit - 24bit / 32KHz - 192kHz

M4A (ALAC): 16 bit - 24bit / 32KHz - 192kHz

APE (Fast/Normal/High): 16 bit - 24bit / 32KHz - 768kHz

APE (Extra High): 16 bit - 24bit / 32KHz - 192kHz

APE (Insane): 16 bit - 24bit / 32KHz - 192kHz

WMA Lossless: 16 bit - 24bit / 32KHz - 96kHz

WMA: 16 bit - 24bit / 32KHz - 96kHz

MP3: 8bit - 16bit / 32KHz - 48kHz

AAC: 8bit - 16bit / 32KHz - 48kHz

OGG: 8bit - 16bit / 32KHz - 48kHz

OPUS: 16bit / 32KHz - 48kHz