Mhtz 33e cd payer

[analogrules]

Hello to everyone !
Has anyone have any experience with the MHZS 33E cd player ?

First things fist the DA chip in that player does not look like a chip , there are no pins . Is this a fake chip all together ?
If the chip is fake how can the adjustable 44.1 to 96. be done? Is that all bull or what ? Then how does it convert D to A anyway ?

Number 2, does anyone have any Idea what opamps sound best in the
Unit, rt now there are BB 2604 , and tried LF 353N . To me the 353N had more bass but less clarity !

Is this player a fraud ??

[SoNic_real_one]

OPA2604 are better than LF353. Alternatives would be OPA2134, OPA1612, LM4562... Depends in some degree of the actual parts in place.

The mistery cip might be a DSP in a BGA form, so it won't have any visible pins. But who knows? A pic would help...

[analogrules]

Under neath the board looks like just some diodes

[analogrules]

Is any needs any oamps I do have 3 .

SA5534NG , SA5534NP , LF353N

[ThorstenL]

Hi,

Originally Posted by analogrules

Hello to everyone !
Has anyone have any experience with the MHZS 33E cd player ?

It is the little brother of the players covered by Lukasz here:

MHZS-CD66F_MHZS CD88

Originally Posted by analogrules

First things fist the DA chip in that player does not look like a chip , there are no pins . Is this a fake chip all together ?

You mean this?



Hi,

Originally Posted by analogrules

Hello to everyone !
Has anyone have any experience with the MHZS 33E cd player ?

It is the little brother of the players covered by Lukasz here:

MHZS-CD66F_MHZS CD88

Originally Posted by analogrules

does anyone have any Idea what opamps sound best in the Unit, rt now there are BB 2604 , and tried LF 353N . To me the 353N had more bass but less clarity !

Non at all. The DAC Chip is the same as in that famous 60 USD Toshiba DVD Player that was all the rage to mod a few years back.

The consensus was the sound was best straight from the DAC Chip via a single coupling Capacitor. I used earlier version of this chip (very little but some convenience features and the model number have changed since), the PCM1716 and can confirm this.

There is also a Vref or some such pin with a Capacitor on it (either one or one per channel - I'd have to check the datasheet), this is actually a "hidden" coupling capacitor (hidden unless you know what's inside the chip) and getting this right makes a huge difference, as does a good powersupply.

All that said, at it's best I found the sound quality from PCM1716 rather uninspiring and I have no reason to think the later versions materially improved.

Originally Posted by analogrules

Is this player a fraud ??

You decide.

Ciao T

[analogrules]

Originally Posted by analogrules

Hello to everyone !
Has anyone have any experience with the MHZS 33E cd player ?

First things fist the DA chip in that player does not look like a chip , there are no pins . Is this a fake chip all together ?
If the chip is fake how can the adjustable 44.1 to 96. be done? Is that all bull or what ? Then how does it convert D to A anyway ?

Number 2, does anyone have any Idea what opamps sound best in the
Unit, rt now there are BB 2604 , and tried LF 353N . To me the 353N had more bass but less clarity !

Is this player a fraud ??

[analogrules]

Ok can anyone tell me why this player still puts out sound without the oamps in the player ?

[analogrules]

Originally Posted by analogrules

Ok can anyone tell me why this player still puts out sound without the oamps in the player ?

Thats what it look like in the 33e also , Can someone explain ?

[SoNic_real_one]

That's nice
I would ask for money back via PayPal...

[analogrules]

really why ? Enplane