vicchow 發表於 2014-1-24 18:05 static/image/common/back.gif
Yes, it sound much much better.
The original op-amp is very cheap OPA604, which you can replace any ...
128sm 我有兩粒。一路都未用過。 試吓先。
拆開機轉電壓後我就裝返好。都冇留意opamp 的問題。
用128sm 要唔要用轉插板? Thanks ching.
henrykee 發表於 2014-1-25 00:19 static/image/common/back.gif
Vicchow hing, could you please let me know where I could change the op amp and about how much to g ...
128sm 好似一路加價，仲有好多假貨。
我當年買好似around $350粒。唔知而家幾錢。
我都有兩粒OPA128SM ...{:1_338:}
128sm不用轉板,直接替換兩粒OPA604就得。你有兩隻128sm部HP-A8真係打橫行。
我正在用new class D都非常好。HP-A8其實係DEMO機冇調GAIN又冇upgrade firmware所以個個試都淡而冇味。你調好設定真係好好好正!
記得upgrade firmware,轉clock去MASTER clock, upsample 較X2。個人暫時這設定最好。AMP GAIN要配合耳機。大食要去到18或20
鐵三角就10-12db就可以。最少最少都要5db
我唔明原廠為何設定0db,根本係DAC直出,冇一隻耳筒會好聽。
本帖最後由 yard 於 2014-2-19 07:26 編輯
vicchow 發表於 2014-1-25 15:27 static/image/common/back.gif
128sm不用轉板,直接替換兩粒OPA604就得。你有兩隻128sm部HP-A8真係打橫行。
我正在用new class D都非常好 ...
請問係咪買呢粒直接替換就得:
http://hk.element14.com/jsp/search/productdetail.jsp?sku=1262950&CMP=KNC-GOO-G12-SKU-TEX&mckv=sWFIcFyvV|pcrid|15613254160
yard 發表於 2014-2-19 00:17 static/image/common/back.gif
請問係咪買呢位直接替換就得:
http://hk.element14.com/jsp/search/productdetail.jsp?sku=1262950&CMP=K ...
是的。想方便插換可先買一個DIP8的插座插上去,再用座連OPA128SM替代原本的OPA604
vicchow 發表於 2014-2-19 00:51 static/image/common/back.gif
是的。想方便插換可先買一個DIP8的插座插上去,再用座連OPA128SM替代原本的OPA604 ...
唔該哂。
vicchow 發表於 2014-2-19 00:51 static/image/common/back.gif
是的。想方便插換可先買一個DIP8的插座插上去,再用座連OPA128SM替代原本的OPA604 ...
Dip8 個插板 去邊度買好?
Thanks ching
SSP華輝
或者去淘寶淘都得。
