#2 - micromegamah :

是否英國制？

#4 - AudioPhoenix :

仲記得當年在 CWB 舊原音購買第一代 A1，好似係三仟蚊左右。時移勢易，如果復克版有埋内置 usb 解碼就完美了。

#6 - smc04 :

知唔知復刻版賣幾錢?

#8 - blackspin :

#3

Should be in EU, not UK........

#10 - ahkeung :

應該台灣做既。

#12 - perfectgrade :

以前同期有冇出過Tuner的？

#14 - micromegamah :

#11

台灣制OK

#16 - ich :

當年AB比較 A1 vs A100x 比較下覺得A100x 最好聽. 我就去大哥雄處買了A100.

#18 - Edo :

現今價錢來講又唔係搶錢嘅，又可以玩到class-A。

#20 - 童虎 :

我認為重新生產A1對音響迷，的確是一個好消息，如果價錢真的這麼合理，大家都可以負擔得到。至於改為中國製造，我認為問題不大，最緊要保持到產品質素，至於，大家最擔心就是音色效果，如果音效不能過關，就算是英國生產，或者，規格怎樣好，講乜嘢都係冇用！

#22 - sam2020 :

#6
冇咗龜殼聲音會變成點，呢個亦都係我最擔心嘅地方，如果唔係買返部故夢重溫真係唔錯！

#24 - Edo :

龜殼不是停咗產嗎？近呢十幾年市場上未見過有用。

#26 - 童虎 :

如果沒有使用，以前的「鐵板燒」式的樣子設計，吸引力真係大減！廠方當然要想方法，減低以前機殼的熱度，否則，可能會減低零件的壽命，但是，以前機殼的樣子確實非常吸引，沒有了這個設計，吸引力大減。

#28 - 童虎 :

#28 英國聲的確正！

#30 - Thanatos :

MJ15003G/MJ15004G

兩隻龜殼，RS/Mouser/Digikey 仲有得賣

#32 - Nonstop :

之前嗰部A1都係頭8W係class A 之後switch 去classic AB

#34 - sj4000 :

#33
＜之前嗰部A1都係頭8W係class A 之後switch 去classic AB＞

咁就唔係純A類！！
有冇詳細資料？？

#36 - sj4000 :

#36
Thx 羅密歐師父


咁即是A1唔係全統純A類！
又係嗰啲所謂前級模擬A類放大電路得過熱字果種！
咁即是可以慳番D $。

#38 - DY2036 :

如果大家播音樂都唔超過八瓦嘅情況之下，你覺得百零二百瓦嘅機起初有八瓦係A類，同部只得八瓦嘅A類機邊部好聲啲。

#40 - ym2283 :

#32
比較下結構，用料

Sudgen A21SE

#42 - ck2007 :

分享吓我有部A100X經歷.

早幾年朋友畀咗部壞A100X我, 由於佢手上已壞過一次叫佢去鴨寮街整, 用幾個月後燒機, 所以唔想浪費錢和時間去整.

我只會簡單DIY, 所以網上找電路及維修POST, 間間斷斷續續過咗年幾先拆開部機睇下, 真係唔好隨便搵人整音響, 發現真係線路板都燒段銅線, 龜殼及些三極管換咗唔同型號. 整機真係要搵番有口碑師父.

好彩這些經典舊機網上有唔少資料, 4隻龜殼換成MJ15003 & MJ15004, 三極管BC550, BC560; 參考英國網教人改善A1可以輸入電解換成薄膜電容, 把原來兩級放大前級OPAMP改為一級. 最後換埋放大電路和電源電解, A100X重生

#44 - 童虎 :

#43 一個很好的分享！多謝晒。

#46 - Nikkor :

#42 #46
果部係 Pass Labs XA-25.


MF-A1, forget it 啦.

Looking at a Musical Fidelity A1 and some of its classic problems which are well documented by Mark Hennessy. We take some reference plots before we do anything then compare with results after our modifications. A power supply upgrade helps with supply ripple and the input amplifier modification reduces the noise floor at higher levels. Noisy volume control and selector switch issues are also exterminated!

Some thoughts after completing this video:
1. The scope noise before modification was horrendous. The input of the amplifier was terminated but its possible that the termination wasn't doing its job due to the precarious input selector switch. This may account for the results being so bad.
2. The non-linearity that I showed on the scope at higher levels before the modifications was not there after the modifications. You can see when I vary the volume control that the output easily goes up to 20v and clips in the traditional way. Possible there was some other fault present before the mod.

These modification and tests take a fair chunk of time. Its unlikely to make economic sense to have these amplifiers modified in this way. The only feasible approach would be DIY.

https://www.youtube.com/watch?v=ekvpnbxHJog

#48 - Thanatos :

姑勿論呢一部新機乜嘢聲底，能夠攞返呢啲話題出嚟討論，感覺好似返返去二三十年前玩音響嗰一種氣氛

唔知點解而家好似冇晒呢種氣氛咁樣

#50 - Yanki820 :

假設新A1 依然播出 class A 的中高頻亮麗音色, 咁我己完全收貨, 根本唔會在意佢的低頻力度, 意思係要欣賞class A 的優點, 播合適A1發揮的音樂, 咁去聽音樂就有氣氛！

#52 - sj4000 :

真係好想試下純A類CDP去純A類AMP果種吸引力。

#54 - sj4000 :

原來Musical Fidelity香港代理係美豐，地址係九龍灣，真係未聽過，唔知係未祖國收購咗Musical Fidelity。

#56 - blackspin :

#57

IMF is not sold to Taiwan company.......... but the current distributor of HK and China is a Mainland company.....

https://www.musicalfidelity.com/products/a1/a1-2

#58 - mcc_2001 :

MF係佢收購左，全因A1咁講，同佢部 single chip tuner同樣精緻可愛！

https://youtu.be/whDL3dxvwa4

#60 - smc04 :

#60
"同廠新出LS3/5a"

師兄,請問有冇資料?~~

#62 - sj4000 :

估唔到Musical Fidelity都出LS3/5a，唔知賣幾錢？

#64 - smc04 :

(會唔會係科寶/falcon代工?)

#66 - niceday009 :

Medical Fidelity 老板並唔係想自己生產靚声產品，只係望到個勢D人盲目追求L3/5A，伸多隻手係市場搶錢，今時今日市場上大把喇叭仔靚過L3/5A，我自己都以前買過兩对，睇返轉頭L3/5A唔係咁靚声，唔好信發x音响陳先生咁多

仲返做A1？有乜過人之處要食返三十幾年前條水，賣萬幾蚊不如買Rega, Atolls,

#68 - niceday009 :

Made on specification of British......

not made in British

但有寫Vienna個字，是否等於Vienna made?

#70 - Thanatos :

其實對喇叭邊度製造，唔難估

可以從呢幾點分析 :
1. 大部份人都知道 MF 本來係英國牌子
2. 而家被一間奧地利公司收購咗
3. 同時間 reissue A1 背後就大大隻字寫住Made in Taiwan (即係話佢哋唔介意，或者佢哋覺得客人唔介意台灣生產)
4. 喇叭後面寫住收購咗嘅奧地利公司名同埋地址，但係就偏偏唔寫生產地

咁即係話個生產地一定衰過台灣，先至唔夠膽講，如果唔係大可以好似 A1 咁寫台灣囉

其實咁多年都睇慣睇熟，唔淨只係音響器材，好多產品對於產地避重就輕，淨係夠膽寫公司地址，又話乜嘢German technology, designed in England, 所有呢啲產品都只有一個產地。我諗大家都有呢個經驗，一睇到呢啲句子就知道邊度造

真係此地無銀三百兩。

#74 - smc04 :

睇完d背景,都覺得係"bestvox套件,歐洲組裝"

#76 - zardwysr :

我都有啲興趣，想用佢推Proac T10S, 不過唔知啱唔啱推？

#78 - Nonstop :

https://youtu.be/ZJEQJkt6lbs

Simon Corey interview

#80 - fotheringay :

吓！連MF都要出3/5a，唔係啩？

咁樣不如我都攞出當年我用80年代當時Falcon Acoustics 曾出過嘅加深DIY 3/5a音箱。

3/5a最多批評話lie end唔夠，如是有人提議不如加多個深度啦！

那時Falcon注打DIY products, 故短期做過。

咁橋我也曾有過original MF A1, 如大家唔介意不如等我係度攪事呀！

https://www.youtube.com/watch?v=Z6qqfrz1YWw

#82 - 沉默的膏蟹 :

已有得試

#84 - perfectgrade :

有冇師兄AB 比併？

#86 - CodyChan :

Steve有報告：
https://youtu.be/2-gQc7Y7iW4?si=HAqnq7sU5SJeyM64

國仁都有報告：
https://youtu.be/q4JHcxG3HIk?si=42FF2FZAdDyadetd

#88 - sj4000 :

國仁條片講得好清楚介紹咗咁多個版本嘅A1鐵板燒，
1985年第一版係純A類20w，
2013年第二版復刻先係頭8w行A類其後轉做AB類25w，
2023年第三版復刻又照番原版行純A類仲提升到去25w純A，
咁第三版又真係幾吸引。

#90 - DY2036 :

#36文中說偏流700ma響8ohm load可以出到8W，我唔知佢點樣計算出嚟但係應該唔得。
功率算式應該如下。
Power = l^2 x R
8 = l^2 x 8
I = 1 A（rms），Peak 1x1.414 = 1.414A
即係話如果要在8ohm load出8W（rms），靜態電流起碼要1.414A，除非佢係每聲道兩對管，每對管偏流系700ma。
其實文中有個錯誤就係佢計rms嘅時候係除開方2，實質應該係乘。


官方網頁有噉嘅敘述:
Technical Talk
The A1 is built around a completely discrete and symmetrical Class A topology. It‘s able to output 25W of pure Class A power @ 8 ohms load with 25A of maximum output. While the numbers here might seem rather low, the ability for the output stage to drive difficult speakers is a small miracle in itself. The amp design being dynamic class A, and if Class A standing current is exceeded, it will automatically allow more. It therefore “slides” (NOT “switches”) smoothly into class B style operation, temporarily allowing the further current draw needed.

dynamic class A如無理解錯誤應該係滑動A類。

#92 - ym2283 :

都是25 Watts class A

#94 - Epic :

1989年 永豐代理的廣告, A100 比 A1 有更好嘅適應性 和 推動力, 當然A100 也不是pure class A, 但輸出 50w class A, 當年用來推Celestion SL6 / 600si, 也非常合拍! 期待復刻 A100 的出現!

#96 - 伊雲士 :

A1原版 幾年前賣咗比呢度C兄 $3000
直版 淨係重新落過散熱油
自己太多机 唔想擺壞佢 聽唔晒 費事嘥咗

#98 - ck2007 :

部機無訊號輸入一直發熱, 可唔可以判斷為純A類?

#100 - niceday009 :

A1相信以前全球賣出好多部，而家返食條水