So I got my zhaolu D2C dac and couldn't control my itchy fingers, so I did some mod to it:
*take out the four dc blocking ELNA caps as suggested in the zhaolu mod thread;
*install additinal EI core transformer for digital. now the digital and analog have seperate transformers.
*replace the digital power caps (post regulation) with high ripple N-caps.
*replace the post reg analog supply caps with ELNA cerafine (remember those 4 ELNA taken out in step-1? they need to go somewhere, right?)
*take out the headamp board.
Output opamps are 2604, I supposed I can try something like 8599. But other than that, nothing else to mod? But there is soooooo much extra space in that big case, I don't want to "waste it". High $ stuff like zap filter is out of question as I want to keep the cost to mininum.
I can think of two options from here:
a) add a tube output stage. I have 6922 and 5687's, I supposed I can do a SRPP output stage.
or,
b) full battery power supply, I guess a 8-cell Eneloop Nimh pack will be good enough for the digital section, then two 10-cell packs for analog. I have some eneloop packs laying around so all I need is a charging system....
which way to go?
(Or maybe I should just leave the case half empty and stop modding....the Zhaolu was originally bought for using with my TV.....
)
*take out the four dc blocking ELNA caps as suggested in the zhaolu mod thread;
*install additinal EI core transformer for digital. now the digital and analog have seperate transformers.
*replace the digital power caps (post regulation) with high ripple N-caps.
*replace the post reg analog supply caps with ELNA cerafine (remember those 4 ELNA taken out in step-1? they need to go somewhere, right?)
*take out the headamp board.
Output opamps are 2604, I supposed I can try something like 8599. But other than that, nothing else to mod? But there is soooooo much extra space in that big case, I don't want to "waste it". High $ stuff like zap filter is out of question as I want to keep the cost to mininum.
I can think of two options from here:
a) add a tube output stage. I have 6922 and 5687's, I supposed I can do a SRPP output stage.
or,
b) full battery power supply, I guess a 8-cell Eneloop Nimh pack will be good enough for the digital section, then two 10-cell packs for analog. I have some eneloop packs laying around so all I need is a charging system....
which way to go?
(Or maybe I should just leave the case half empty and stop modding....the Zhaolu was originally bought for using with my TV.....
)
