出售: Tung-Sol JTL-5687 D-getter (馬蹄形除氣環) etc.

Tung-Sol JTL-5687 D(horseshoe)-getter (馬蹄形除氣環) etc.

Tung-Sol 5687 rivals Bendix 6900 costing around USD250 each. Smooth and sweet punchy sound yet detailed; bass is fuller and deeper. Put it simply - it does everything just right!

測值全新或高測值 - fully tested on the Canadian Stark 9-66AU and Hickok TV-7B/U tube tester.
Matched pair transconductance (Gm) measured per section:

1.1 Tung-Sol JTL-5687 D-getter Gm 6000+/6000+ ＜ --- SOLD
1.2 Tung-Sol JTL-5687 D-getter Gm 6000-/6000+ ＜ --- SOLD
1.3 Tung-Sol JTL-5687 D-getter Gm 6000+/6000- ＜ --- SOLD
1.4 Tung-Sol JTL-5687 D-getter Gm 7250/7000+ - HK$400/single單隻
(Measured with Stark 9-66AU)
http://i98.photobucket.com/albums/l273/tubepower/20140413_100958c_zps5cc93afe.jpg

2.1 Tung-Sol 5687 large O-getter Gm 10250/10750+ - HK$450/single單隻
2.2 Tung-Sol 5687 large O-getter Gm 9750/9500+ - HK$450/single單隻
(Measured with TV-7B/U)
http://i98.photobucket.com/albums/l273/tubepower/20160530_163249_zps0iyfsezf.jpg

3.1 Tung-Sol (Amperex) 5687 D-getter Gm 10625/10500 - HK$400/single單隻
3.2 Tung-Sol (Amperex) 5687 D-getter Gm 9250/10500 - HK$400/single單隻
(Measured with TV-7B/U). These two are actually Tung-Sol 5687 as evidenced by the fact that the marking font and colour ‘5687’ and the ‘3223’ marking on the right hand side tube (‘3223’ is Tung-Sol).
http://i98.photobucket.com/albums/l273/tubepower/20160530_163419_zpsxhd7ugfn.jpg

4.1 Sylvania GB-5687金腳 大O-getter Gm 11375/11500 - HK$400/single單隻
4.2 Sylvania GB-5687金腳 大O-getter Gm 11500/11000 - HK$400/single單隻
(同廠碼 ‘LM EAK’) (Measured with TV-7B/U)
http://i98.photobucket.com/albums/l273/tubepower/20160530_163828_zps93ku5nuk.jpg

5. Sylvania JAN 5687WB Gm 5600/5800大O-getter - HK$350/single單隻
(Measured with Stark 9-66AU)
http://i98.photobucket.com/albums/l273/tubepower/20140215_153236-sylvania%20janx_zpsj18egcqr.jpg

6. GE 5687 Gm 6250/6250 O-getter - HK$350/single單隻
(Measured with Stark 9-66AU)
http://i98.photobucket.com/albums/l273/tubepower/20140215_153133-gex_zpsxzykauwn.jpg

Used single units:
a. Tung-Sol JTL-5687 D-getter Gm 5000/5000 ＜ --- SOLD
b. Tung-Sol JTL-5687 D-getter Gm 4300/5400 - HK$250/single單隻
c. Tung-Sol JTL-5687 D-getter Gm 4200/4600 - HK$250/single單隻
d. Tung-Sol(GE) 5687 Gm 6250/6000 ＜ --- SOLD
(Measured with Stark 9-66AU)
http://i98.photobucket.com/albums/l273/tubepower/20131022_093221cx_zpsyrncfdyd.jpg


The minimum Gm requirement is 3150/3150 per section; new around 5000/5000 according to the Stark 9-66AU manual (Canadian Hickok tube tester, similar to Hickok 533A, Hickok 750).

絕對正貨, 請安心購買。
市區地鐵站交收，例如 金鐘站Admiralty MTR Station.

I am a vintage hi-fi and electronic enthusiast; all vacuum tubes are my private collection from Canada. 所有出讓的真空管都是小弟私人收藏，從加拿大带返。

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作者：tubepower 於 2016-06-09 10:16:16 發表