MARANTZ MM8003 VS MM7055

randyma

It seems not big different. The main different is MM8003:mass Torodial transformer but MM7055 is EI power transformer. Any Ching know which transformer is better.

kleehkg

It seems not big different. The main different is MM8003:mass Torodial transformer but MM7055 is EI  ...
randyma 發表於 2010-10-21 11:50

copy from http://hk.knowledge.yahoo.com/question/question?qid=7008090101904

Hi-Fi發燒友對環牛趨之若鶩，因為兩大點:

漏磁比普通EI牛少得多 (約1:10之比)

所發出Hum聲也比普通EI牛少得多

光是這兩點己比EI牛優勝，而且在效率及重量方面，環牛也比EI牛優勝，以同等的VA輸出計，環牛重量及大小比EI牛可以省一半。

環牛與EI牛的差異在於其設計，環牛air gaps較EI牛少，繞線設計令grain boundaries 得以整齊排列而減低核心的磁阻。

價格方面當然是環牛成本較高，以同等的VA輸出計，環牛成本貴60%到一倍左右。

Details ducuss as below.
http://www.26fun.com/bbs/viewthread.php?tid=197505

chukk

very good information.  Ching

ikkjr

回復 2# kleehkg

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