轉載: 試聽Luxman L-590AX

lomei

柒喜 發表於 2014-4-17 10:29
一個能樣

你好衰

lomei

auraheart 發表於 2014-4-17 11:02
It is about the same style as 30 to 40 years ago, although it is not build as good.  Technology is ...

5 話你係達人刀 5 得

steven2012

超靚系統

andyy

外形懷舊

auraheart

How would I describe Class A amp in general?..Hmm...Technically, if we connect a scope and observe a static sine wave, a good Class A's out-put looks like a sine waves.  No ripple, no cross-over distortions.  One problem is that it does have higher lower harmonic distortions, mainly second and/or third harmonics.  In more complex dynamic wave reproductions.  It is the next best thing can happen comparing to the original signal.  It is "on" at all time.  Therefore, there is no switch what what so ever, unlike ALL other classes that has switches somewhere.  Meaning that is ready to work at all times without any delays.
In real life experience, Class A amp with JFET front end it is the best it can be.  Very tube like sounding at mid range, especially for vocals and strings.  It is second to none.  Very airy, good details.  Bass could be a bit of the issue depending on how well build the amp is since lower range consumes the most power.   Not every Class A is good and a good Class A amp is very very costly.  A well build Class A designed by a musician/singer is impossible to find if cost is a factor.  Of course, big electricity bill too..
My humble opinion and 2 cents.  Hope such general/short descriptions might help our members to visualize why class A still exist.  The oldest amp design in the world.

補充內容 (2014-4-17 18:10):
The production of JFET is limited because of Sony and Yamaha.  The VFET's production is zero for years.  Sad news to the Hi Fi industry.

BREADMING

5皮8、都幾利害！

dingdum

雜食小子 發表於 2014-4-17 06:10
Thank you for watching

個款好classic喎

雜食小子

dingdum 發表於 2014-4-17 21:01
個款好classic喎

家陣可能唔駛

雜食小子

dingdum 發表於 2014-4-17 21:01
個款好classic喎

老套就真

雜食小子

andyy 發表於 2014-4-17 16:29
外形懷舊

外型笨拙

雜食小子

lomei 發表於 2014-4-17 11:52
5 話你係達人刀 5 得

陰向達淫

gooseling

回復 auraheart #45 的帖子

I remembered the best Class A amps were the Krell and the Mark Levinson .Their sound was a bit cold and the bass was not as good as the class AB1 ML3. The British Musical Fidelity as you had mentioned before,would stop after 3 hours of play.

hkmessi123

價錢不菲！

馬甸尼

圖文極佳, 大開眼界

auraheart

gooseling 發表於 2014-4-17 22:24
回復 auraheart #45 的帖子

I remembered the best Class A amps were the Krell and the Mark Levinson . ...

I like my class A mono amp better...  Designed and handmade by Bruce Moore at his garage..hehe.  KT88/6550 based..40 watts.

Eqpally

BREADMING 發表於 2014-4-17 18:59
5皮8、都幾利害！

Maybe a bit over 4皮 disc price in HK.  Price is $5,000 USD water goods directly from Japan to U.S.

auraheart

gooseling 發表於 2014-4-17 22:24
回復 auraheart #45 的帖子

I remembered the best Class A amps were the Krell and the Mark Levinson . ...

On the bass, heavyly depends how well that Class A is build, mainly parts oriented lol....cost too much for a good class A to to produce good bass realistically.  The design part is easy.  Anyway I like the ML2..better.  Little nice 25 watts amp.  My old Bedini was nice too, also 25 watts, can handle very low impedance down to 1 or 1.2 ohm..if I remember correctly.  Perfect to drive Quad E.S.L.  I did that for quite some time.  Big surprised to me, the Pioneer M22 was not bad either, 25 wpc, Class A.

ML 2

補充內容 (2014-4-18 01:25):
This is what I call a decent 25 watts mono class A amp, not really Luxman..hehe

補充內容 (2014-4-18 03:08):
I was so impressed with ML2 the first time I listened to it.  Six ML2s driving a pair of HQD, tri-amp.  Never heard anything better at the time.  :P

alexGTR

其實個擴音好唔好聲係緊要，但個面板要靚仔仲緊要，因為部機放喺度成日見住，但唔會24小時開住，當然Luxman呢個老牌子出得嘅擴音都唔差，用料同設計都上乘，仲用埋復古行針設計，想唔買都唔得！（當然有錢先算！）

auraheart

alexGTR 發表於 2014-4-18 01:49
其實個擴音好唔好聲係緊要，但個面板要靚仔仲緊要，因為部機放喺度成日見住，但唔會24小時開住，當然Luxman ...

This Luxman has a typical look of the 70s and 80s..They pretty much all look like that for a typical Japanese gear this price range.  I never like Japanese sound in general.  Well, with a few exceptions..

wildmant

很有經典feel,價錢貴左啲！