เครื่องเล่นพกพา Astell & Kern Ak380 Copper

แบรนด์:
Astell & Kern
ประเภท:
เครื่องเล่นเพลงพกพา
จำนวน:
-
แต้มมั่นคง:
ซื้อรายการนี้รับ 1,500 คะแนน รายละเอียด
ราคา 150,000 บาท
ค่าขนส่ง:
ฟรีค่าจัดส่ง เมื่อยอดเงินรวมในการสั่งซื้อ 500.00 บาท
ช่องทางการชำระเงิน:

สอบถามเพิ่มเติม:
สอบถามข้อมูลสินค้าเพิ่มเติม คลิกที่นี่

รีวิวผลิตภัณฑ์

Astell&Kern AK380 Copper ตัวแรงรุ่นใหม่ล่าสุดมีจำหน่ายเเล้วจ้า ซึ่งถือว่าเป็นรุ่น Top สุดของแบรนด์ครับ

 

โดยความพิเศษนั้นจะอยู่ที่บอดี้นั้นไม่ใช่เเค่สีเป็น Copper เเต่ว่าบอดี้นั้นทำจากเนื้อ Copper แท้ๆเลยครับ และผ่านกรรมวิธี ด้วยเครื่องจักร 5-axis milling machine จาก Copper แบบก้อนจนมาเป็นชิ้นงานบอดี้อย่างที่เห็น

 

ซึ่งเเค่การเปลี่นบอดี้ถ้าดูตามหน้าสเป็คหน้ากระดาษนั้นเเทบจะไม่มีอะไรชี้วัดได้เลยว่าเสียงนั้นดีกว่า แต่ถ้าได้ลองฟัง AK380 Copper ตัวจริงเเล้วจะเปลี่ยนความคิดเเน่นอนครับ

ด้วยความสุดยอดของ AK380 รุ่นปกติที่ให้มิติเเละเลเยอร์ชิ้นดนตรีที่เด็ดขาด เวทีเสียงกว้างขวาง น้ำเสียงมีความเป็นดนตรีสูง เรียกได้ว่าเป็นคาแรคเตอร์เสียงในฝันของนักฟังเพลงเลยล่ะครับ

แต่พอมาเป็น AK380 Copper นั้นน้ำเสียงนั้นยิ่งโดดเด่นขึ้นไปอีกครับ ไม่ว่าจะเป็นโทนเสียงที่กระจ่างและเปิดขึ้น อิกทั้งยังให้ image และน้ำหนักเสียงที่ดีขึ้น รวมไปถึงมิติด้านลึกที่ดีขึ้นอีกเล็กน้อย และที่สำคัญ เบสนั้นมาแบบเน้นๆ ทั้งทุ้มและลึก แต่แฝงไปด้วยความละมุน จึงทำให้ไม่รู้สึกเมื่อยล้าเวลาฟังเพลงจาก AK380 Copper เลยแม้เเต่น้อยครับ

 


 

When Music Becomes More Than Just Sound

Copper, as an alloy with tin, nickel, or zinc, is used as a raw material for wind instruments, which form the central part of an orchestra. These wind instruments transmit deep and heavy sounds through tubes of copper alloys.

Sound with a sense of depth
Sound with a sense of weight
Sound with a greater balance

In addition, copper is the second most electrically conductive1 metal after silver. With superior electrical conductivity and shielding performance than typical metals, the AK380 Copper is able to deliver a different sound signature than the existing duralumin-based AK380.

* The copper used in the AK380 Copper boasts a 99.9% pure elemental property.

Electrical conductivity of metals

Metal

Conductivity (%)

Resistivity (μΩ/cm)

Silver

106

1.62

Copper

100

1.7241

Gold

71.8

2.4

Aluminium

62.7

2.72

Tungsten

31.3

5.5

Zinc

29.2

5.9

Nickel

23.8

7.24

Pure Iron

17.6

9.8

Steel

17.2

10 ~ 20

Platinum

16.3

10.6

Tin

15.1

11.4

Lead

8.21

21

Nichrome

1.58

109

Brass

24.6 ~ 34.5

 5 ~ 7

 Bronze

 9.58 ~ 13.3

 13 ~ 18


Copper

AK380 Copper is finished in a two-step process using a 5-axis milling machine, and approximately four hours of processing time is required per unit.

Due to the highly-ductile nature of copper, the shavings tend to curl inwards rather than out when creating thread lines, causing the ends of milling tools to become damaged or broken. Because of this finicky nature of copper, the material requires more hands-on labor by an operator compared to other materials such as aluminum.

Uncoated raw copper quickly oxidizes from exposure to outside elements, which makes mass production very difficult to manage.

Astell & Kern AK380 Copper

Fully processed copper is approximately 3.2 times greater in metal weight when compared to duralumin

While a 530-gram block of raw material is milled to create the 55-gram frame of a duralumin-based AK380, a 1.7-kilogram block of copper is processed to create the 175-gram frame of an AK380 Copper.

Comparison between processed Copper and Duralumin

  Copper Duralumin
Metal Weight
8.96
2.8
Raw Material

Astell & Kern AK380 Raw Material

1,700g

Astell & Kern AK380 Raw Material Duraluminum

530g

Post-Processing

Astell & Kern AK380 Copper Post-Process

175g

Astell & Kern AK380 Post-Process

530g

After two stages of milling, the finishing process begins to smooth the surface of the product and create a hairline-brushed finish. 
The finishing process requires 30 minutes to an hour for a skilled worker.

* A process in which the surface of an object is polished into its final form.

Astell & Kern AK380 Copper Process

To prevent oxidation, the AK380 Copper requires more time and effort in the final coating process than any other Astell&Kern series product.
To maintain the raw, natural feel of copper, numerous tests were conducted using a variety of antioxidant materials. As a result, we were able to hone in on the optimum processing time for each stage of the coating process.

Anti-oxidation coating is completed in a four-stage process. Skilled workers continually monitor the processing time at each stage of coating.

[4-Step Coating Process] Degreasing / Etching / Film Application / Drying

[Stage 1 – Degreasing] In the degreasing stage, oil and other debris that occurred during processing and finishing are removed electrically.

Astell & Kern AK380 Copper Process

[Stage 2 – Etching] In the etching stage, an oxide film is applied to the exterior surfaces to highlight certain areas that were marked via processing, finishing, and laser marking.

Astell & Kern AK380 Copper Process

[Stage 3 – Film Application] Upon discovering that the look and feel of copper is largely dependent on the film application, we invested a large amount of time testing various applications.

Astell & Kern AK380 Copper Process

[Stage 4 – Drying] The surfaces of the frame is dried after the film application, and each unit is immediately packaged and sent to the assembly process.

Astell & Kern AK380 Copper Process


Wrapping the AK380 Copper in Natural Leather

Astell & Kern AK380 Natural Leather Case

The leather case for the AK380 Copper is made of a natural type of leather known as V1, which is produced in Turkey and used by many leading luxury brands.

The V1 is generally used in the making of handles, wallet interiors, and accessories, representing the highest quality in natural leather. It’s most famously used for the handles of Louis Vuitton bags. Unlike other brands that apply a coating on the surface of the leather, the case for the AK380 Copper is not finished with a surface coating in a rather difficult production process to truly capture the unique personality and characteristics of the user.

The AK380 Copper's leather case maintains the same color for the first six months of use and tans gradually depending on the use, care, and style of the user. Generally, the color in the vegetable tanning of leather is determined by the additive. The chestnut component used in the AK380 Copper's V1 leather case results in a caramel color.

The V1 Story

The V1 is produced by the Sepiciler Caybasi tannery in Turkey.

The Sepici tannery was founded in 1930 before the leather industry had yet taken shape in Turkey. The company started with leather caps and uppers of lambskin shoes and eventually grew into a successful company in the Yesildere region, being renamed to the Sepici and Sons Collective Company. 

The history of the Sepici tannery is intertwined with the founding of the Republic of Turkey and later became incorporated, evolving along with the country's industrialization. The company celebrated its heyday in the 1970s under the name Sepici Caybasi Leather Ind., Inc.

The company soon grew into the largest of its kind in Turkey and was selected as the best tannery for 10 consecutive years since 2003. It is now one of the most successful tanneries in the global leather market.


Evolved to Serve Pro-Audio

Astell&Kern has stayed on the course, offering the truest and most natural sound possible. In order to become a device that professionals want, Astell & Kern decided to make a bold move and restart all processes from the beginning. The new AK380 Copper offers the most authentic sound from any digital music format with enhanced features that are sought-after by Pro-Audio.

Featuring:

  • 32bit 384kHz Bit to Bit Playback
  • Native DSD (up to 5.6 MHz) Playback
  • Parametric EQ with 20-band 0.1dB
  • 200 Femto Second VCXO Reference Clock
  • Scalable Amp
  • DNLA-based AK Connect App
  • Metal Touch Sensor Home Button


Every bit of the AK380 Copper was designed for Pro-Audio in mind. The sound that Pro-Audio people have been looking for starts with the AK380 Copper.

32-bit 384kHz bit-to-bit Playback

The circuit design of the AK380 Copper including the DAC can handle 32-bit music natively & is ready for all 32-bit processing.  Bring it on! Other products have traditionally used sample rate converter (SRC) method down sampling for playback, but the AK380 Copper is capable of playing back 32-bit, 384 kHz original sound without any down sampling.

As a result, the AK380 Copper plays up to 32-bit, 384 kHz, all 24-bit music files, or double layer DSD 5.6MHz natively, without conversion or compression.

PEQ (Parametric EQ)

A parametric equalizer (PEQ*1) was added to the AK380 Copper to deliver detailed adjustment of the original sound, and an audio digital signal processor (DSP) was added to aid in this process.

This frees up CPU cycles previously needed for calculating graphic equalizers (GEQ), allowing more detailed and accurate calculations via the dedicated DSP.

The audio DSP expands the existing 10-band, ±0.5 dB graphic equalizer (GEQ*2) to 20-band, ±0.1 dB to more precisely adjust the frequency and gain (dB) as well as more accurately specifying the frequency range via Q value adjustments.

* The PEQ supports up to 8 kHz - 192 kHz (8/16/24-bit) formats, but DSD and 32-bit audio are not supported.

The AK380 Copper's PEQ Playback Using Audio DSP

Image ak380 Playback

The other Products GEQ Playback Using Audio DSP

Image Playback other products

AK380 Copper 20-band PEQ and AK240 10-band GEQ Frequency Values

Image AK380 & AK240 GEQ Frequency values

What is Parametric Equalization (PEQ*1)?

Parametric equalization refers to the ability to increase or decrease the volume within the Q value range. A Q value is a frequency range relative to a selected frequency.

The frequency range decreases when the Q value increases and vice versa.

Image Parametric Equalization

What is Graphic Equalization (GEQ*2)?

Graphic equalization divides the audible frequency register into several registers and increases or decreases the level of each register with a volume slider to adjust the respective frequency's characteristics. The switches of the volume slider are connected like a graph to visually determine the frequency characteristics, hence the name "graphic equalizer."

Image Graphic Equalization

Equipped With a Femto Clock to Deliver True Original Sound

Astell&Kern implemented a voltage-controlled crystal oscillator (VCXO) high-precision clock with a reference jitter value of 200 femto seconds*3.
Femto clocks are commonly used in high-end audio systems, and the clock is measured in high-precision femtosecond units (one quadrillionth of a second).

What is VCXO?

A VCXO, or a voltage-controlled crystal oscillator, is a type of crystal oscillation device that creates oscillation frequencies. External environmental stimuli, which in this case mean voltage inputs, influence the frequency value. Adjustments to the voltage input tunes a precise frequency value.

What is Jitter?

Jitter refers to the undesired deviation in time that occurs in a periodic signal. In this case, jitter is the error that occurs in the reference clock required to perform the sampling in digital audio equipment.

By utilizing a femto clock, the AK380 Copper is able to create a more accurate frequency value and make fine jitter corrections. As a result, the AK380 Copper faithfully reproduces analog sound closer than ever to the original source when transmitting a digital signal as an analog signal.

Image What is Jitter

AK Connect App

Astell&Kern has further enhanced DLNA functionality via the AK Connect app. Wireless networking DLNA (version 1.0) connects to a NAS or PC, and is easily controlled with a smartphone or tablet through AK Connect.

Source files on a PC or NAS can be freely transferred and streamed without the hassle of turning on the computer and physically connecting with a cable.

If on the same access point (AP) network, music files on a PC or NAS can be played back via DLNA.

Image AK Connect App

DMP (Digital Media Player)

Finds a list of content on a media server for selection and playback.

DMC (Digital Media Controller)

Finds a list of content on a media server and establishes a connection to a playback-capable device (renderer). By default, a DMC establishes a connection between a media server and media renderer and controls content playback-related operations.

DMS (Digital Media Server = Network Server)

Actually stores the media content to be shared. When connected to a network, the DMS transmits/distributes the media content for other devices to stream or download.

DMR (Digital Media Renderer = Network Player)

Connects to a media server via media controller for content playback.

Image AK Connect App

Pressure-sensitive Metal Capacitive Touch

The AK380 Copper is the first Astell&Kern product to utilize a metal capacitive touch interface. The pressure-sensitive Metal Touch home button responds to fine pressure changes so users operate the device with just a light touch on the metallic pad.

Design Concept

The light and the object are the main theme of the AK380 Copper design. Any shadow of an object portraits the exact shape from the perspective of the light at that moment. The way of reproducing the true sound of music from digital formats is quite similar. Nothing more or nothing less. The design motif of the AK380 reflects our philosophy of music and sound.

The AK380’s design was inspired by “light” and “shadow”.

While the design of the AK240 captured as a moment in time of light and shadow, the AK380 Copper is designed to express the change of time with more angles on its body. You will notice the different angles of surface design as you view the AK380.

We believe that the beauty of the design shall reflect what the AK380 Copper can do with music. As different angles of light casts different shadows, different music will give you a variety of emotions.

ข้อมูลจำเพาะ

- Model : AK380 / AK380 Copper

- Body Color : AK380 : Meteoric Titan, Black / AK380 Copper : Copper

- Body Material : AK380 : Aircraft Grade Duralumin / AK380 Copper : Copper

- Display : 4inch WVGA (480 x 800) Touchscreen 

- Supported Audio Formats : WAV, FLAC, WMA, MP3, OGG, APE(Normal, High, Fast), AAC, ALAC, AIFF, DFF, DSF

- Sample rate : PCM : 8kHz ~ 384kHz (8/16/24/32bits per Sample) / DSD Native: DSD64(1bit 2.8MHz), Stereo 
/ DSD128(1bit 5.6MHz), Stereo / DSD256(1bit 11.2MHz), Stereo

- Output Level : Unbalance 2.2Vrms / Balance 2.3Vrms (Condition No Load)

- DAC : AKM AK4490 x2 (Dual DAC)

- Decoding : Support up to 32bit / 384kHz Bit to Bit Decoding

- Input : USB Micro-B input (for charging & data transfer (PC & MAC)) 
/ Connection Mode : MTP (Media Device)

- Outputs : PHONES (3.5mm) / Optical Out (3.5mm) / Balanced Out (2.5mm, only 4-pole supported)

- Wi-Fi : 802.11 b/g/n (2.4GHz)

- Bluetooth : V4.0 (A2DP, AVRCP, aptX)

- Dimensions : 3.14 ”(79.8 mm) [W] x 4.42 ”(112.4 mm) [H] x 0.70 ”(17.9 mm) [D]

- Weight : AK380 : 8.11 oz (230 g) / AK380 Copper : 12.35 oz (350 g)

- Feature Enhancements : Firmware upgrades supported (OTA)