review33.com: 影音天地: Jeff Rowland 同好會

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[#2443] Jeff Rowland 同好會師兄們,想轉會但不知Jeff Rowland 的機耐用嗎? 見金仔好多幾舊下既型號都仲賣得,Jeff Rowland 的(由其是 Class D)會否幾年就打柴? 還有很多牌子既機,落釘都會有影響,有無師兄有落釘俾Jeff Rowland 既心得可以分享? 謝謝! 最後修改時間: 2016-08-31 09:31:43		RJordan 正式會員 203.xxx.xxx.26	2016-08-31 09:30

[#2444] Jeff Rowland 同好會
用左多年,JR的產品我覺得非常耐用從未發生過問題

最後修改時間: 2016-09-01 15:56:47

awmk

正式會員
14.xxx.xxx.235

2016-09-01 15:54

[#2445] Jeff Rowland 同好會

最後修改時間: 2016-09-01 16:20:13

MetalNuts

正式會員
203.xxx.xxx.26

2016-09-01 16:05

[#2446] Jeff Rowland 同好會
請問上代旗艦criterion 同呢代比較如何？上代充電池容易死嗎？

Frankiechun

正式會員
123.xxx.xxx.32

2016-11-02 18:19

[#2447] Jeff Rowland 同好會
Corus + PSU在動態,速度同定位各方面都完勝用電池操作的Criterion

by iPhone / iPad App

ap111700

正式會員
42.xxx.xxx.100

2016-11-02 19:40

[#2448] Jeff Rowland 同好會
不加PSU, 用返standard又如何？

Frankiechun

正式會員
168.xxx.xxx.151

2016-11-02 19:51

[#2449] Jeff Rowland 同好會
用返跟前級的power supply block就一定輸比Criterion 價錢已反映呢個事實

by iPhone / iPad App

ap111700

正式會員
42.xxx.xxx.100

2016-11-03 00:42

[#2450] Jeff Rowland 同好會
725

同

825

價格差吾多，聲低大唔大分別呢？

aheung

正式會員
219.xxx.xxx.198

2016-12-03 10:19

[#2451] Jeff Rowland 同好會
想請教各位師兄 Avalon ascendantll 如果要夾rowlond 咩model會比較match

阿也

正式會員
14.xxx.xxx.222

2016-12-21 00:42

[#2452] Jeff Rowland 同好會
小弟用continuum 500(連內置phono)推Ascendant II，簡簡單單

ay8233

正式會員
115.xxx.xxx.227

2016-12-21 07:47

[#2453] Jeff Rowland 同好會
hifi show嘖725會唔會有折頭？

aheung

正式會員
14.xxx.xxx.74

2017-08-08 22:30

[#2454] Jeff Rowland 同好會
Hi 啱啱買了Capri S2! 值唔值得加PC-1 淨比佢？謝謝意見！

eborn

正式會員
182.xxx.xxx.227

2019-03-15 09:34

[#2455] Jeff Rowland 同好會
覺得值得

jjwenda

正式會員
14.xxx.xxx.24

2019-03-15 13:59

[#2456] Jeff Rowland 同好會
謝謝你，應該有不俗的提昇吧？！

eborn

正式會員
182.xxx.xxx.227

2019-03-15 15:42

[#2457] Jeff Rowland 同好會
Sure! 一定要買。用咗靚聲好多

ddlkh

正式會員
116.xxx.xxx.2

2019-03-15 16:18

[#2458] Jeff Rowland 同好會
Thanks, 入手了，真的有料到！

eborn

正式會員
182.xxx.xxx.170

2019-03-15 20:05

[#2459] Jeff Rowland 同好會

當年今日：Jeff Rowland 9 + Avalon Ascent II – Hi Fi Review
http://hifireview.com.hk/19930101/jeff-rowland-9-and-avalon-ascent-2/

george1977v5

會員
218.xxx.xxx.82

2019-03-20 11:49

[#2460] Jeff Rowland 同好會
剛入手了Corus和Psu，分析力異常好，好靜，聲音非常乾淨，有音樂感，系統史無前例地好聲~

最後修改時間: 2019-04-11 12:53:06

jjwenda

正式會員
14.xxx.xxx.31

2019-04-11 12:43

[#2461] Jeff Rowland 同好會
各師兄,
想問 Concentra 1 古董機,算不算好機,值得買嗎?
TKS..

無奈

正式會員
202.xxx.xxx.21

2019-09-02 17:42

[#2462] Jeff Rowland 同好會
New Product Announcement for 2020. April 29, 2020
The new Model 735 Mono Power Amplifier is now available for immediate shipment.
Since the ending of production of the popular Model 725 Mono Amplifier in 2018, there has been an increasing demand for a replacement of this fine amplifier for use by discriminating music lovers and audiophiles worldwide.
By using the Model 725 as an acclaimed platform for ongoing research and development, a number of changes have been incorporated into the design of the new Model 735, which are discussed below.
After many hours of critical listening tests done on several input transformer types, and consultation with Per Lundahl of Lundahl Transformers AB in Sweden, it was decided to incorporate a custom designed cobalt-based amorphous core input transformer instead of the standard high permeability, mu metal lamination core type previously used in the 725.
Despite a slight increase in measured low order harmonic distortion in the low frequencies due to the amorphous construction, the increase in overall musical resolution, richness and expression throughout the overall frequency range due to the inclusion of this particular transformer became immediately apparent during listening tests.
Due to the continuing increase of electromagnetic and radio frequency interference and pollution throughout the world, an improved input filter characteristic was incorporated in the input stage of the Model 735 to address this issue. Very small amounts of EMF interference from any source can have deleterious effects on sensitive input stages of all solid state circuitry, therefore these measures taken in the Model 735 yielded enhanced musical reproduction and background silence. A reduction of amplifier bandwidth to approximately 90 kHz was chosen and careful filter alignment achieved a very minimal group phase deviation, which guarantees signal fidelity.
Additional refinement of the error correction circuitry lowered the distortion well above 30 kHz to levels difficult to measure with modern test equipment. Although

it may be difficult to determine if these measures yield substantial sonic benefit at this time, I feel it is still an exercise worthy of effort towards the advance of knowledge and understanding of amplifier circuit operation.
The ceramic substrate circuit board material is carried over from previous models and has been redesigned in some areas to accommodate some minor circuit improvements and additions. A new color has been chosen for a unique visual identifier.
A new muting circuit has been incorporated in the output circuitry to reduce noise during turn-on and turn-off transitions.
A new amplifier bottom cover has been designed with machined cavities to accept a proprietary damping material, secured in place with machined covers, which act as supporting feet for the amplifier. During the testing and evaluation of various damping materials and supporting elements, a material and configuration was found which completely isolates the amplifier chassis from its supporting structure, allowing the amplifier to express its full potential.
A new faceplate power standby button, similar to those used on other products in our line, augments aesthetic compatibility with other JRDG products. Operational status is now indicated with a subtle, white pin-point LED, reducing distraction in darkly lit listening rooms.
A new non-anodized machined top cover extends the clear faceplate elegance towards the rear of the unit, enhancing contrasting elements of the entire “machined from a solid block" chassis.

eey

正式會員
210.xxx.xxx.124

2020-05-08 13:09