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Details :

 

ELEKIT
TU-8550 12AU7 and 12AX7 Tube Preamp with built-in Phono Equalizer [OTHER]

Number: TU-8550
Label: ELEKIT
Barcode:
Released Date:
2022年9月14日

0.00

 

Track Listing:

 

銷售地點:


CNA Music Limited

Address : Room 1104, 11/F., Winning Centre, 29 Tai Yau Street, San Po Kong, Kowloon, Hong Kong.

地址 : 九龍新蒲崗大有街29號宏基中心1104室 ( 鑽石山港鐵車站A2出口步行大約6分鐘,大有街與八達街交界 )

Telephone (電話) : (852) 2604 4802

 

Description:

 

Elekit TU-8550 Pre-amplifier

Elekit TU-8550

2022年9月中旬起發售,限量推出,售完即止。

日本 EK Japan 最新出品,『摩機』新手或前輩高手均期待,一部門檻不太高之套裝真空管前級放大膽機(Pre-amplifier)。


(圖上 TU-8900 300B / 2A3膽機與TU-8550前級合照)

(圖上 TU-8550 前級)

一部附帶內置唱頭均衡器(phono equalizer)的膽機,使用CR 型RIAA 均衡器電路,這設計以音樂訊息流暢與美麗音質著稱。美國錄音工業協會(RIAA)制定了錄音與播放的標準特性曲線,錄音時衰減低頻提升高頻的強度,放音時再反向還原,這樣的電路稱之為RIAA等化電路。RIAA等化電路將音頻分為四個階段。20~50HZ、50~500HZ、500~2120HZ及2120~20000HZ,以1000HZ時的增益為0dB為準。

(圖上 TU-8550鳥瞰圖)

減少低音量時的殘餘噪聲,音響玩家知道,當聲源電平較低或功率放大器的輸入靈敏度較低時,前置放大器需要高增益。另一方面,前置放大器的高增益會帶來低音量下殘留噪聲的問題。音量增益鎖定系統(Volume-gain locking system),增益隨著音量降低(約1.4倍)而降低,並在音量升高時增加(約7倍),從而解決此殘留噪聲問題並減少低電平時的噪聲,即使音量很低時。

(圖上 TU-8550 四位音量電位器)

4位音量電位器,在 TU-8550中,這個四邊形控制器,是2個左右音量控制和2個左右增益控制組合而成。

如何有效消除嗡嗡聲,電源部分,採用快速恢復二極管整流和MOSFET慢啟動穩定電源。另加熱電源,使用LDO穩壓器,目的是徹底消除嗡嗡聲。

(圖上 TU-8550機背圖)

特別加配REC-OUT選擇器,可連接到錄音設備或需要把TU-8550的均衡器放大器輸出至另一個放大器一起時使用。

兩組輸出插頭(PRE-OUT),可連接2個功率放大器。

提供更大空間位置,容納最大直徑為20mm、長度為57mm的電容器,增大升級可行性。

SPECIFICATION: (規格如有更改,恕不另行通知)

EQUALIZER AMP STAGE:
INPUT RESISTANCE: 47kΩ (MM cartridge)
RIAA EQUALIZATION: Within ±0.5dB (20Hz – 20kHz)
MAX OUTPUT VOLTAGE: 20V rms (1kHz)
GAIN (1kHz): 29dB
SN RATIO (IHF-A): 112dB

FLAT AMP STAGE:
MAX OUTPUT VOLTAGE: 20V rms (1kHz)
MAX GAIN: Approx. 17dB (approx. 7 times)
FREQUENCY RESPONSE: 5Hz – 200kHz (-3dB)
RESIDUAL NOISE: 15μV(IHF-A)
SN RATIO (IHF-A): 130dB

Overall:
TUBES: 12AX7 x 4 and 12AU7 x 2
PHONO IN: RCA jack / MM cartridge
LINE IN: LINE 1, 2, 3 : RCA Jack / LINE 4 : 3.5mm mini jack
PRE OUT: RCA jack 2 lines        
REC OUT: RCA jack 1line
POWER VOLTAGE: AC2200V 50/60Hz (IEC standard 3P inlet)
POWER CONSUMPTION: 23W
DIMENSIONS: W 352 × H 66 × D 298 mm
WEIGHT: Approx. 3.9kg(Assembled)

 

型號: TU-8550 日本定價: 121,000日元,包真空管

型號: TU-8550N 日本定價: 104,500日元,不包真空管

日本參考網頁
https://www.elekit.co.jp/product/TU-8550

The specifications of the product and prices are subject to change without prior notice.
The color of the product may look different from the actual product.


價格如有更改 ,恕不另行通知。

九龍 新蒲崗 大有街29號 宏基中心1104室
( 鑽石山港鐵站A2出口步行約6分鐘,大有街與八達街交界 )

 

可直接向本公司購買:

1) 請聯絡CNA MUSIC LIMITED購買熱線,訂購及查詢電話: (852) 2604 4802,確定存貨。

2) 把現金存入本公司提供的銀行帳戶。

3) 帶同存款收據到本公司取貨即可。

 

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