Analog Turntable

TN-4D

Employing a new ultra-stable, direct-drive motor,
a classically designed turntable with knife-edge tonearm bearings

採用新型超穩定直驅馬達，
帶有刀緣音臂軸承的經典設計唱盤

The TN-4D is a direct-drive, analog turntable with an elegant, low-profile design, made possible by the use of a newly-developed brushless DC servo motor.

Our new brushless DC motor (with feedback control system) achieves crystal-locked speed stability and smoother rotation while also eliminating cogging*. This low-profile motor allowed us to design a plinth that’s extraordinarily sleek and stylish compared to that of most other direct drive turntables. The new tonearm employs knife-edge, pivot-point bearings, developed in collaboration with SAEC Corporation, a world-famous, high-end tonearm manufacturer. The result is an insightful, high-resolution sound quality that tonearms with conventional bearings can’t match. Partnering it is a carefully designed PHONO EQ amplifier that allows you to directly connect the turntable to the line-level inputs of your existing hi-fi system. A high quality NJM8080 op-amp, specially designed for hi-fi applications by New Japan Radio Corporation, is employed to convey the finest of musical detail. Additionally, a USB port on the back panel allows you to digitally archive your vinyl collection via your PC/Mac.

To extract the music from your vinyl, the TN-4D comes with a highly-regarded Oyster MM cartridge from SUMIKO – a legendary American cartridge manufacturer. Noted for its innate musicality, the cartridge comes pre-installed on the headshell at the factory, allowing near ‘plug and play’ operation. The S-shaped tonearm meanwhile allows for quick cartridge/headshell swaps, so users can alter the sound quality by experimenting with different cartridges, if the desire takes them.

The TN-4D is an analog turntable that achieves highly accurate rotational speeds and is very distinctive, for a direct-drive design, thanks to its sleek and stylish aesthetics.

What is Cogging?
Cogging is a phenomenon in which the periodic attraction of the armature and rotor inside the motor is dependent on the rotation angle, resulting in a fine pulsing. For example, if you turn the axle of a motor with your fingers, you'll feel the rotation occurring in steps. This phenomenon is known as cogging.
In order to eliminate cogging on a direct-drive turntable, a motor needs to have large numbers of poles, along with complex circuits and a mechanism to achieve smooth rotation. As a result, most turntable direct-drive units are relatively large, which is why the resulting turntables are so bulky.

TN-4D是一款直接驅動的模擬唱盤，採用新開發的無刷直流伺服馬達，具有優雅的輕薄型設計。

我們的新型無刷直流馬達（帶反饋控制系統）在消除齒槽的同時，實現了晶體鎖定的速度穩定性和更平穩的旋轉。與其他大多數直接驅動唱盤相比，這種低姿態的馬達使我們能夠設計出一個非常光滑和時尚的底座。新款唱臂採用刀緣式樞軸點軸承，與世界著名的高端唱臂製造商SAEC公司合作開發。成果是一種富有洞察力的高分辨率音質，與傳統的軸承手臂無法匹配。它是一個精心設計的PHONO EQ擴大器，允許您直接連接唱機到現有高保真係統的線路電平輸入端。高音質的NJM8080運算擴大器是專為新日本無線電公司的高保真應用而設計，用於傳達最精美的音樂細節。此外，後面板上的USB端口允許您通過PC / Mac以數碼方式存檔您的黑膠唱片集。

為了從您的黑膠唱片中提取音樂，TN-4D配備了SUMIKO備受推崇的Oyster MM唱頭 ， 一個傳奇的美國唱頭製造商。以其固有的音樂性而聞名，這種唱頭在工廠裡預裝在唱頭殼上，可以進行“即插即用”的操作。同時，S形音臂允許快速更換唱頭/唱頭殼，因此用戶可以通過嘗試不同的唱頭（如果需要）來改變音質。

TN-4D是一款模擬唱盤，可實現高精度的轉速，並非常獨特，直接驅動設計，多虧於其圓滑和時尚的美學。

什麼是齒槽？
齒輪現象為馬達中的電樞與轉片，由於旋轉角度所產生的週期性吸引力現象，會產生精密的脈衝，舉例來說，若您用手指旋轉馬達的輪軸，在旋轉的時候，您會有一格一格的感覺，這樣的現象，就為齒輪現象。
為了消除直接驅動唱盤上的齒槽現象，馬達需要具有大量的磁極，以及復雜的電路和實現平穩旋轉的機構。以至於大多數唱盤直接驅動單元相對較大，這就是使得唱盤如此龐大的原因。

New motor, developed exclusively for direct-drive turntables

The TN-4D uses a sleek, brushless DC motor, offering crystal-locked speed accuracy, regulated by a computer-controlled feedback circuit and achieving low wow-and-flutter levels for a direct drive turntable, especially one with such a stylish, low-profile design.

專為直接驅動唱盤開發的新型馬達

TN-4D採用光滑的無刷直流馬達，提供晶體鎖定速度精確度，由計算機控制的反饋電路調節，並實現直接驅動轉盤的低哇和顫振水平，特別是具有這種時尚，低速的唱盤設計。

Knife-edge, pivot-point tonearm bearings

刀緣，樞軸點音臂軸承

In collaboration with SAEC Corporation, a world-famous, high-end tonearm manufacturer, the TN-4D's tonearm employs a knife-edge, pivot-point bearing. Unlike the case for tonearms with conventional bearings, any fine vertical movements encountered by this tonearm actually help in delivering a more dynamic sound with excellent resolution. The S-shaped tonearm also employs a universal headshell fitting, allowing users to quickly and easily swap cartridges/headshells, and supports a wide range of cartridge weights (from 14 - 23g / 0.5 - 0.8 oz.)

TN-4D的唱臂與世界著名的高端唱臂製造商SAEC公司合作，採用了刀緣式樞軸點軸承。與帶有傳統軸承的唱臂的情況不同，這種唱臂遇到的任何精細垂直運動實際上有助於提供具有出色分辨率的更動態的聲音。 S形唱臂還採用通用的唱頭殼配件，允許用戶快速輕鬆地更換唱頭/唱頭殼，並支持各種唱頭重量（14-23克/0.5-0.8盎司）

Precision anti-skating and stylus-pressure adjustment

精確的防滑和触針壓力調節

As you might expect, the tonearm is equipped with a counterweight, for precise stylus-pressure adjustment, and an anti-skating mechanism.

如您所料，唱臂配備了平衡物，用於精確的觸針壓力調節和作為防滑機制。

Pre-installed Oyster cartridge by SUMIKO

SUMIKO預裝Oyster唱頭

The TN-4D comes with a well-regarded Oyster MM cartridge from SUMIKO – a legendary American cartridge manufacturer. Regardless of the type of music, the Oyster cartridge delivers a powerful but insightful performance.

TN-4D配備了SUMIKO備受好評的Oyster MM唱頭，SUMIKO是一家傳奇的美國唱頭製造商。無論音樂類型如何，Oyster唱頭都能提供強大而富有洞察力的性能。

Built-in PHONO EQ amplifier supporting MM cartridges

The TN-4D comes with a built-in PHONO EQ amplifier that allows you to directly connect the turntable to the line-level inputs of your existing hi-fi system. The NJM8080 IC from New Japan Radio Corporation is employed for op-amp duties, bringing up the level of the tiny signals received via the cartridge up to LINE level strength without any loss of quality.

內置PHONO EQ功放，支持MM唱頭

TN-4D配有內置PHONO EQ擴大器，允許您直接將唱盤連接到現有高保真音響系統的線路電平輸入端。新日本無線電公司的NJM8080 IC用於運算擴大器工作，將通過唱頭接收的微小信號的電平提升至LINE級強度而不會降低音質。

Die-cast aluminium platter

鋁鑄轉盤

In conjunction with the newly-developed motor, the high inertia, die-cast aluminium platter helps to achieve better speed stability.

結合最新開發的馬達，高慣性鋁鑄轉盤有助於實現更好的速度穩定性。

USB digital output

A USB port on the back panel delivers CD-quality digital audio to your PC/Mac, allowing you to record/archive your vinyl in a high quality, digital audio format. Once you have archived your vinyl to digital, it’s a simple matter to listen to them while out and about, via a smartphone/portable audio player, or in your car (by burning them onto a CD-R or transferring them to a memory card/stick).
And to ensure pristine signal transfer, gold-plated PHONO/LINE output terminals are employed to prevent analog audio signals from losing quality as a result of oxidation.

USB數碼輸出

後面板上的USB端口可為您的PC / Mac提供CD音質的數碼音頻，允許您能夠以高質量的數碼音頻格式錄製/存檔您的音樂。將黑膠唱片檔案存檔到數碼後，通過智能手機/便攜式音頻播放器或車內（通過將它們刻錄到CD-R上或將其轉移到存儲卡上）來收聽它們非常簡單。為確保原始信號傳輸，採用鍍金PHONO / LINE輸出端子，以防止模擬音頻信號因氧化而損失音質。

Insulating feet with excellent shock absorption

The insulating feet comprise a machined aluminium shell topped with a rubber cushion that is fixed to the high-density MDF plinth. Thanks to their excellent shock absorption characteristics the TN-4D is very resistant to acoustic feedback.

絕緣腳具有出色的減震性能

絕緣腳包括一個機械加工的鋁製外殼，頂部帶有橡膠墊，並固定在高密度纖維板基座上。由於其卓越的減震特性，TN-4D對聲音反饋非常有抑制力。

2-speed turntable for 33-⅓ and 45 rpm

The TN-4D supports 33-⅓ and 45 rpm for LP and EP records. Our insistence on quality engineering can even be seen in the construction of the rotary control for start-up/speed selection, formed of machined aluminium.

支持雙速唱盤，轉速為33-1/3和45轉/分

TN-4D支持33-1/3和45轉/分的LP和EP錄音。我們對質量工程的堅持可以從用於啟動/速度選擇的旋轉控制器的構造中體現，該控制由鋁製機械加工而成。

Features at a glance

• Direct-drive analog turntable
• Crystal-locked speed stability, thanks to a new brushless DC motor with feedback control
• Die-cast aluminium platter
• Knife-edge, pivot-point tonearm base, designed by high-end tonearm manufacturer SAEC
• Multi-layer piano black or natural walnut veneer finish
• Built-in PHONO EQ amplifier for high-quality sound (PHONO/LINE switchable)
• Audiophile-grade NJM8080 op-amp used in PHONO EQ stage
• Digital recording on PC/Mac via USB digital audio output
• 2-speed drive offering 33-⅓ and 45 rpm
• Gold-plated oxidation-resistant output connectors
• Oyster MM cartridge by SUMIKO
• Shock-absorbing insulating feet
• GND terminal
• RoHS compliant

功能列表

• 直接驅動模擬唱盤
• 採用帶反饋控制的新型無刷直流馬達，晶體鎖定速度穩定性
• 鋁鑄轉盤
• 刀緣樞軸點音臂軸承，由高端唱臂製造商SAEC設計
• 多層鋼琴黑色或天然胡桃木飾面
• 內置PHONO EQ擴大器，可提供高品質聲音（PHONO / LINE可切換）
• PHONO EQ級使用的發燒級NJM8080運算擴大器
• 通過USB數碼音頻輸出在PC / Mac上進行數碼錄製
• 支持雙速唱盤，轉速為33-1/3和45轉/分
• 鍍金抗氧化輸出連接器
• SUMIKO生產的Oyster MM唱頭
• 減震絕緣腳
• 接地端子

Spec description
Turntable section     
Type    Direct Drive
Motor    Brush-less DC Motor
Rotation Speeds    33-⅓ rpm, 45 rpm
Wow-and-Flutters    0.1%
S/N Ratio    67dB or higher (A-weighted, 20kHz LPF)
Turntable (Platter)     
Material    Aluminium Die-cast
Diameter    30cm
Tone-arm section     
Type    S-shaped, Static-balanced
Effective Length    223mm
Needle Pressure Range    0g to 5.0g
Compatible Cartridge Weight    4.0g to 13.0g
14g to 23g (including Head-shell) 
Head-shell and Cartridge sections     
Type    MM-type (SUMIKO Oyster factory installed)
Output Voltage    4.0mV (1kHz)
Needle Pressure    1.5 to 2.5g (appropriate value: 2.3g)
Weight    5.3g
Head-shell weight    10g (including nuts, screws, and wires)
Compatible Stylus    Styluses for SUMIKO Oyster
Analog Outputs     
Connector    RCA Pin jack × 1 pair (PHONO/LINE switchable)
Output Voltage     
PHONO    4.0mV (1kHz)
LINE    224mV (–13dBV)
USB Output     
Connector    USB B-type (DC 5V 100mA USB Bus power required)
Audio Format    PCM, 8k/11.025k/16k/22.5k/32k/44.1k/48kHz, 16bit
Operating Power    AC 100 to 240V, 50/60Hz
Power Consumption    2W
Standby Power    0.5W or less
Overall Dimensions (W×H×D)    420 × 117 × 356 mm /
16.5" × 4.6" × 14.0"
Weight    Approx. 6.1kg / 13.5 lbs.