原創CD機 A8-S

t.kaiming,

For me.....

1. Upgrade upsampling module before signal to PCM1732.
(we have 24bits/96KHz upsampling provide)

2. Change 4 E-cap from Elna MUSE to Blackgate. Also that 2 large 3300uF.

3. Low pass filter capacitor --> Silver Mica

4. Op-amp --> NS LME49710.  (more musical than OPA627).
You can soldering a socket inside of PCB, we have OPA627BP and LME49710, you can AB comparision.

5. Resistor --> Dale or RMG depends on your budget. But sure is not using the cheap cheap default resistor.

OPA604 --> Single OP-AMP

NE5532 --> Dual Op-amp

LME49710 --> Single op-amp.

LME49720 --> Dual op-amp.

OPA627 SINGLE

記往試埋LME49710

YES

Cheaper than OPA627.

You can soldering the IC socket and take your machine to hififever to do a AB comparision test.

Good, you can take your machine to hififever (suggest at coming SAT), I can demo the diff of OPA627 and LME49710 to you.

Also, we have ELNA Silmic II, Nichicon KZ, Sanyo OS-CON, Nover capacitor in stock for your modification.

Please confirm you can come this SAT or not.

For me, I perfer use SILVER MICA for output buffer, and low pass filter stage..

你告訴我參數，我報价俾你。
還有，有訂造R-CORE牛供應。