*图片仅供参考。实际产品可能有所不同。

Fully balanced audio circuit

From DAC decoding, low-pass filtering, 增益 control, 和 to headphone amplification, the K15’s audio circuit is a fully differential design. Such a design ensures wide dynamic range while also effectively reducing crosstalk, minimizing noise, 和 enhancing the quality of audio output.

Leading the new ‘core’ generation Dual high-end AKM DAC AK4497S

The K15 is among the first to use two of the new high-end AKM DAC芯片s, AK4479SVQ featuring the upgraded 'VELVET SOUND' audio technology. The chips achieve low distortion, a wide dynamic range, 和 extended signal b和width, all at low power consumption. Rich detail is retained in both low 和 high frequencies for a natural 和 immersive sound experience.

VELVET SOUND is a br和 that embodies the sound philosophy of AKM’s new-generation audio products. It aims to achieve 'true-to-life sound reproduction' by fully utilizing audio technology, delivering an authentic 和 immersive acoustic experience with no compromises.

*Trademarks is the property of AKM

Discrete architecture

Class-AB transistor current-boosting headphone amplifier circuit

Within the K15 is a carefully designed discrete headphone amplifier circuit, featuring an OP + transistor current-boosting design. A complementary pair of the classic ON Semiconductor MJE243G/253G delivers high current 和 low impedance output. This discrete circuit can achieve balanced 输出功率 up to 3000mW + 3000mW, allowing the K15 to effortlessly drive both full-尺寸d headphones 和 in-ear monitors - producing smooth, natural, yet melodious sound.

Eight operating modes

*The max current output of the USB-A 端口 is 500mA, suitable for USB flash drives. If you need to connect a 端口able hard drive, please connect a separate 电源 for it.

Physically separated boards

The internal 电源, digital, 和 analog sections each lie on separate physical boards, physically preventing crosstalk. This effectively ensures the precision 和 integrity of processed audio signals, for pure 和 quality sound.

Precisely designed 电源

DC/AC dual 电源

The K15 features a built-in next-generation 30W (12V-2.5A) low-noise, high-efficiency, long-lasting, industrial 和 instrumentation-grade 电源. The K15 also 支持部门s external DC power supplies*, allowing it to work with higher-performance linear power supplies for even higher sound quality.

 

*12V-2.5A external DC power supplies are 支持

 

85~305VAC Ultra-wide input voltage range -40°C~85°C Operating temperature

500000 hours Ultra-high reliability

 

大标题-双击进行编辑

Separate digital 和 analog

section power supplies

Such a design helps to effectively avoid crosstalk between the digital 和 analog sections of the audio circuits by ensuring better power isolation 和 improved anti-interference abilities.

多级模拟电源

The analog section features a precisely-segmented multi-stage 电源, including stages for digital-to-analog conversion, LPF, 和 transistors. The 电源 utilizes up to 14 low-dropout linear regulators to ensure a continuous supply of stable 和 pure power.

Precisely restored signals Every last detail heard

Inside the K15 is the industry-leading ACCUSILICON ultra-low phase noise AS318-L crystal oscillator (45.1584MHz, 49.1520MHz) that effectively reduces phase noise interference in audio signals. This ensures precise reproduction of audio signals at various sampling rates, for purer 和 more stable sound.

2 Accusilicon low phase noise femtosecond audio crystal oscillators

高-end parts,All for sound

2 Nichicon 3300uF audio capacitors + 4 ELNA SILMIC II capacitors + 8 ELNA RA3 audio capacitors

高er quality sound with a better soundstage.

8 ruby film capacitors + 32 wafer resistors

Low temperature drift, low noise, mean stable sound quality in both hot 和 cold environments.

sets of silver-plated oxygen-free copper interconnect wires

The various boards are connected with silver-plated oxygen-free copper wires to ensure high-fidelity signal transmission with minimal loss.

 

高-quality Beryl capacitors

Ultra-low ESR, strong anti-interference abilities, for a stable 和 pure 电源.

Dual master cores Stable 和 smooth experience

高-performance multi-core processor X2000: This processor is powered by a unique design featuring dual XBurst@2 cores + XBurst@0 micro-core, to deliver exceptional computing performance at ultra-low power consumption. This ensures precise audio signal processing, guaranteeing stable 和 smooth music playback.

Efficient MCU ESP32-S3: Integrated into this chip is a high-performance Xtensa 32-bit LX7 dual-core processor 和 an ultra-low-power coprocessor, featuring a clock speed of up to 240MHz. This chip enables precise system control for a highly efficient 和 fast user experience.

A harmonious fusion of square

和 round Brilliance in design

The K15 features ZHUONING's signature design blending square 和 round elements, merging retro elegance with cutting-edge technology. Thoughtfully crafted for both functionality 和 aesthetics, it features convenient screen controls 和 multiple knobs for smoother operation. In addition, the grid structure enhances heat dissipation - all showcasing the brilliance of its meticulous design.

Touch control /旋钮控制 /远程控制 /卓苧控制 App connection

10-b和 high-precision PEQ Unlimited fun

All digital inputs of the K15 支持部门 P均衡器调整*. Precisely fine-tune the sound to your liking by simulating 和 modifying the 频率响应 curve of headphones, thanks to ZHUONING’s proprietary adjustment algorithm 和 interface.

* Digital inputs include USB, coaxial, optical, 蓝牙, streaming media 和 local playback. *Web PEQ location: Top bar of ZHUONING website – 支持 – Web-based PEQ settings

多项 protection systems

Listen worry-free

Not only has the device gone through rigorous testing in ZHUONING labs, it also contains various protection systems that can intelligently detect abnormal conditions 和 take actions accordingly to protect you, avoiding damage to the machine.

The Gigabit 网口 支持部门s fast 和 stable wired data transmissions, while the AP6256 Wi-Fi module 支持部门s 2.4G 和 5G b和 wireless networks as another way to stably transmit lossless audio.

Wired or wireless

Always a stable connection

Independent 网口, 支持部门s Gigabit wired network

支持 2.4G 和 5G b和 wireless networks

Wide variety of usage scenarios

已标记的按钮和端口

*Adjusting the equalizer via the webpage requires connecting to the RS232 端口 on the rear panel.

*The maximum output current of the USB-A 端口 is 500mA, which is suitable for connecting to a USB flash disk. If you need to connect to a mobile hard disk drive, please use an extra 电源 to power it!

包装清单

①----------------------------------------------K15*1

②--------------------------------AC power cord*1

③-------------------------------远程控制 *1

④----------------------  XLR4 decorative plug*1

⑤-------------------------------------------    Fuse*1

⑥--------------------------------USB data cable*2

⑦-----------------  Headphone plug adapter*1

⑧-------------------------------- 保修卡*1

⑨-----------------------------快速启动指南