VOGONS


Yamaha MU90 mod

Topic actions

First post, by shandavid

User metadata
Rank Newbie
Rank
Newbie

I like the sound of the MU90 more than the later models, but I was still a little dissatisfied, so I modified it.

have a listen:)

original MU90:
https://youtu.be/KBxyOTpDCeQ

MU90 mod
https://youtu.be/gHgA42MkuyQ

I also made my own USB Bluetooth DACs and Amps, (even the sound of vintage CD players are not enough for me)
Speakers are Pioneer from the 80s
have a listen 😀
https://youtu.be/b60AWxzF65A

Last edited by shandavid on 2023-08-23, 14:23. Edited 4 times in total.

Reply 1 of 4, by Spikey

User metadata
Rank Oldbie
Rank
Oldbie

Rather than listening, what did you change? I'm not technically/IC minded enough to tell from the images.

Did the DAC change? Op-amps?

Reply 2 of 4, by BloodyCactus

User metadata
Rank Oldbie
Rank
Oldbie

it just looks like a recap from the photos. the dacs are all same from what I see (LC7886M)

--/\-[ Stu : Bloody Cactus :: [ https://bloodycactus.com :: http://kråketær.com ]-/\--

Reply 3 of 4, by shandavid

User metadata
Rank Newbie
Rank
Newbie
BloodyCactus wrote on 2023-08-22, 12:10:

it just looks like a recap from the photos. the dacs are all same from what I see (LC7886M)

No, it's not just recap, I optimized the parameters of each capacitor, the sound improvement is greater than changing opamp or dac chips

Reply 4 of 4, by shandavid

User metadata
Rank Newbie
Rank
Newbie
BloodyCactus wrote on 2023-08-22, 12:10:

it just looks like a recap from the photos. the dacs are all same from what I see (LC7886M)

I also made my own USB Bluetooth DACs and Amps, (even the sound of vintage CD players are not enough for me)
Speakers are Pioneer from the 80s
have a listen 😀
https://youtu.be/b60AWxzF65A