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调整器材出，按原厂资料升级过电容，看图，升级后状态很好，出让价17000元，有意联
系，因工作关系最好短信，电话13117633358，钟
升级电容资料如下：
阈值-T 2前置升级版
Edit, 14th october 2007: this article follows the review of the original
THRESHOLD T2 preamplifier, which can be found here on our site . 编辑， 07年十月
一十四日：本文如下审查的原始阈值T2放大器，它可以在这里找到我们的网站上 。 We
recommand you to first read the original review. 我们建议您先阅读原审查。
As previously said, one of our reference preamplifiers, the THRESHOLD T2 , has
been upgraded.正如先前说，我们的一个参考前置门槛T2的已经升级。 After more than
10 years of good service, it became necessary to change some parts that normally
decline as time passes (this is the case for the capacitors for exemple).经过十
多年的良好的服务，有必要改变一些地方下降，通常随着时间的推移， （这种情况下的电
容器的例子） 。
Its musicality was still extremely good, but we suspected that some improvement
was possible.其音乐仍然非常好，但我们怀疑，一些改善是可能的。
It is now back to home, and the first feedback is herebelow.现在回到家里，首先是
herebelow反馈。
The diagnosis: 诊断：
Upgrading or replacing parts on any high end component is not something you
should try without serious skills in electronic: replacing parts already
requires some expertise, but you should not modify the circuit unless taking the
risk to loose the qualities and musicality of the original design.升级或更换零部
件对任何高端的组成部分不是你应该尝试没有严重的技能电子：更换部件已经要求一些专业
知识，但是您不应该修改电路，除非采取风险松散的素质和音乐的原始设计。
Therefore, it was logical for us to ask FIDETECH to proceed with such a work,
with the main objective being to put the T2 back to the Manufacturer
specifications (at least).因此，这是合乎逻辑的，我们要求FIDETECH着手进行这样的工
作，其主要目标是使了T2回到制造商规格（至少） 。
The diagnosis was that some parts were too used (such as some capacitors) both
in the Power Supply and in the preamp circuits.诊断是，一些地方过于使用（如一些
电容器）在电源和功放电路。
The work done by FIDETECH is superb, both mechanically and from an electronic
viewpoint.所做的工作FIDETECH非常出色，无论从机械和电子的观点。 To convince you,
just have a look at the photos of the Power Supply before and after the upgrade:
为了说服你，只要看看这些照片的电源之前和之后的升级：
the original Power Supply 原来的电源
the upgraded Power Supply, with "EPO inside"... 升级电源，以“内促红细胞生成素”
...
It is obvious that a serious work has been done, and that some "amphetamins"
have been added to the original Power Supply., which was already oversized fro a
preamp: we remind you that the original Power Supply hosts a 150VA transformer
and 70.000μF of capacitance....很明显，一个严重的工作已经完成，有些“
amphetamins ”已添加到原来的电源。 ，这是已经过来回一前置：我们提醒你，原来的电
源主办150VA变压器和70.000μF电容....
The main modifications are:主要修改：
the 2 active components, referenced TOSHIBA 2SA1302 and 2SC3281 have been
changed by new ones (made in Japan). 2活性成分，参照东芝2SA1302和2SC3281已经改变
了新的（在日本） 。
the 6 big capacitors ELNA, made in Taïwan..., 4x10.000μF/63V/85°C and
2x15.000μF/36V/85°C have been replaced by BHC Aluminium capacitors having a
better quality, and made in Europe (United Kingdom). 6大电容器埃尔纳，在台湾...
， 4x10.000μF/63V/85 ° C和2x15.000μF/36V/85摄氏度已取代六六六铝电容器具有更好
的质量，并在欧洲（美国英国） 。 They have the same value, but they are much
bigger with screw based contacts, in order to allow a high current possibility
(they are rated 11A).他们有相同的价值，但它们更大的螺杆基础接触，以使高电流的可
能性（它们的额定11A条） 。 The power suplu is entirely filled, it was impossible
to put bigger caps in the box... suplu的力量是完全填补，就不可能把更大的帽子在方
块中...
4 small capacitors have been added in // with the big ones.第4小的电容器已添加
在/ /与大的。 They are VISHAY 0.47μF/630V/85°C.他们是Vishay的 0.47μF/630V/85摄
氏度 This is done in order to improve the filtering in the high frequencies and
the dynamic range.这样做是为了改善滤波在高频率和动态范围。 These capacitors are
the same ones than FIDETECH added on the upgraded SA/3.9e power amplifier: look
here .这些电容器同样的比说的FIDETECH升级SA/3.9e功率放大器：看这里。
The quality of the work is excellent: the T2 looks like if it just goes out from
the factory.质量工作是出色的：了T2看起来，如果只是从工厂。 Everything is
perfectly done, and there is clearly a serious study of the parts
implementation, the BHC capacitors and the small VISHAY entirely filling the
box.一切都十全十美的，而且显然是一个认真研究的部分实施，六六六电容器和小Vishay的
完全填补方块。
The parts that were changed in the preamp itself. 这些部件被改变放大器本身。
A lot of parts were changed in the preamp itself: many capacitors, transistors,
etc....许多地方改变了在前置本身：许多电容器，晶体管，等等... Here is the photo
of the parts replaced:这是照片的部分改为：
Photo of the parts that were replaced 图片部分被取代
Parts changed in the Power Supply: 部分改变电源：
1,2 and 3: original capacitors (made in Taiwan) of the Power Supply, 4 x ELNA
10.000μF/63V/85°C and 2 x ELNA 15.000μF/36V/85°C, replaced by BHC made in the
United Kingdom. 1,2和3 ：原始电容器（在台湾）的电源， 4 ×埃尔纳10.000μF/63V/85
° C和2 ×埃尔纳15.000μF/36V/85 ℃ ，六六六取代了联合王国。
Parts changed in the Preamp itself: 部分改变放大器本身：
4: 6 x ELNA capacitors 220μF/25V/85°C changed by 105°C 4 ： 6 ×埃尔纳电容器
220μF/25V/85 ℃的改变， 105 ℃
5: 18 x ELNA capacitors 47μF/50V/85°C changed by 105°C 5 ： 18 ×埃尔纳电容器
47μF/50V/85 ℃的改变， 105 ℃
6: 10 x C4793 replaced by new ones 6 ： 10 × C4793改为新的
7: 4 x ELNA capacitors 2200μF/50V/85°C replaced by 105°C 7 ： 4 ×埃尔纳电容器
2200μF/50V/85摄氏度改为105 ℃
8: 8 x A1360 replaced by new ones 8 ： 8 × A1360改为新的
9: 10 x A1837 replaced by new ones 9 ： 10 × A1837改为新的
10: N630 NPS A42 and N548 NPS A92 replaced by new ones 10 ： N630源A42和A92核动
力源N548改为新的
11: 4 x A1145 replaced by new ones 11 ： 4 × A1145改为新的
12: internal onboard LED 12 ：内部板上的LED
13: 4 x C2705 replaced by new ones 13 ： 4 × C2705改为新的
As you can see, the T2 has been seriously regenerated...正如你可以看到，了T2受到
了严重的再生... You can locate where some parts were changed by looking at the
following photo:你可以在那里找到一些地方改变了看下面的照片：
Photo of a few changed parts 照片几个部分改变
Here is a photo of the internal preamp stages:这是一个照片的内部前置阶段：
The internal Threshold T2 preamp stages 内部阈值T2前置阶段
as well as a global view of the preamp circuits, where you can see that the LCD
display and volume control are isolated from the line stages (and dust) by a
Copper (Cu) protection cover at the bottom of the image:以及作为一个全球观点的前
置电路，在这里您可以看到， LCD显示器和音量控制隔离线阶段（和尘埃）的铜（ Cu ）保
护覆盖底部的图片：
The global internal view of the Threshold T2 preamp 全球内部鉴于阈值T2前置
Here is a photo of a 105°C new capacitor:这是一个照片105 ° C新电容器：
What are the results from a musical viewpoint ? 的结果是什么从音乐的观点？
This is obviously the most important, and as we said previously, the preamp is
currently in its burning in period, so the parts have not yet reached their
maximum performance.这显然是最重要的，当我们说，以前，前置目前正处于煲机的时期，
因此，部分尚未达到其最大效能。
Nevetheless, 2 listening sessions have already been done on our reference system
#2 with a direct comparison with our reference preamp JADIS JP80MC , and on our
reference system #1 in association with the two Threshold SA/6e class A
monoblocs . Nevetheless ， 2听会已完成对我们的参考系统， ＃ 2直接比较符合我们的
参考前置JADIS JP80MC ，以及对我们的参照系统＃ 1与这两个阈值SA/6e A级monoblocs 。
I will just tell you one thing: do not be anxious about the results, we are more
than optimistic !我只想告诉你一件事：不要担心的结果，我们有超过乐观的！
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