剛完工的SP-10前級

Kenneth, 你真快手!! 咁快搞掂

Hi hmy,

你可能在接地上出問題, 請確定沒有Ground loop.

hmy,

Have you tried another preamp? the problem may also come from your CD player

hi kw,

pls check email

for 300B, we'll arrange to start it on next Sat. is that ok for you?

Alternatively, we can help you to build it.