The digital audio circuit is designed around two ROHM BD34301EKV chipsets.
It is the first time for the chipset to be implemented in a porable 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
2x2 Current to Voltage I-V Converter Network
as low noise high current output stage of the ROHM DACs.
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 effect of the Nutubes.
Compartmentalized CNC Aluminum 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 shield the Nutubes.
to mount the Nutube and Silicon Housing into the designated
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.
Interface Madness Comprehensive choice of inputs and outputs
Phone Output: 3.5mm Single-ended
Unamplified Line Output: 3.5mm Single-ended (dedicated)
4.4mm Balanced (shared with phone, swtich in pull down menu)
Digital Interface: USB Audio Transport (USB-C, Output) I2S (Mini HDMI, Output)
USB Audio DAC (USB-C, Input) S/PDIF Coaxial (Embedded USB-C, Output)
Bluetooth v5.0 Codec supported: LDAC, AAC, UAT, 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 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
aluminum frame which works as a heat sink to direct the
heat to all the edges simutaneously.
The structure maximizes the thermal efficiency and ensures
the device to maintain its best performance.