• Disclaimer: This Vendor's Forum is a paid-for commercial area. Unlike the rest of diyAudio, the Vendor has complete control of what may or may not be posted in this forum. If you wish to discuss technical matters outside the bounds of what is permitted by the Vendor, please use the non-commercial areas of diyAudio to do so.

OLD THREAD Hi-end phono preamplifier by Andrea Ciuffoli

Jump to Latest
quanghao

quanghao

Member
Joined 2009
quanghao.com/
tangmonster said:
Second question IRF9160 , anybody have a supplier/equivalent for these ,it seems they are hard for me to find.


WAIT! I think i see now , It should be IRF9610 and NOT IRF9160

We\I need a decent parts list page with designators.

and possibly a once over to look for mistakes like this :)
Click to expand...

you can use 9240 change 9160, becuase in the PCB, i put size for it
PM:
if you can by it, i can help by it for you IRF9160.
but made China, about 0.5$/mosfet.
 
quanghao

quanghao

Member
Joined 2009
quanghao.com/
to day i get PCb phono D3a and SShv for Phono
I will sent you early!
Thank you many many!
Quanghao
 

Attachments

  • PCB-Phono.jpg
    PCB-Phono.jpg
    459.8 KB · Views: 657
  • PCb-SShv-for-phono.jpg
    PCb-SShv-for-phono.jpg
    413.8 KB · Views: 629
  • 22.jpg
    22.jpg
    387.5 KB · Views: 608
S

sonata149

Member
Joined 2006
E180F substituting D3a?

I am interested in building this phono preamp but it seems a waste of money buying D3as at about $20 ea (incl of shipping) when I already have a stash of E180F. Searching the web it seems they have similar characteristics but they're not automatic substitutes.

What is your opinion of this valve? Does anybody have direct experience of it, particularly in phono stages? Being far, far from technical (though I've built/copied a number of projects), can some members please suggest what changes in the circuit shown in post #1: http://http://www.audiodesignguide.com/Phono/pre-phono4.html
are needed for the E180F: http://http://tdsl.duncanamps.com/dcigna/tubes/sheets/amperex/6688-3g.gif


Thanks for your help,
Best regards,
Joe A
 
Last edited:
S

sonata149

Member
Joined 2006
Repeat post to activate link.

I am interested in building this phono preamp but it seems a waste of money buying D3as at about $20 ea (incl of shipping) when I already have a stash of E180F. Searching the web it seems they have similar characteristics but they're not automatic substitutes.

What is your opinion of this valve? Does anybody have direct experience of it, particularly in phono stages? Being far, far from technical (though I've built/copied a number of projects), can some members please suggest what changes in the circuit shown in post #1: http://http://www.audiodesignguide.com/Phono/pre-phono4.html
are needed for the E180F: http://http://tdsl.duncanamps.com/dcigna/tubes/sheets/amperex/6688-3g.gif


Thanks for your help,
Best regards,
Joe A
 
A

audiodesign

Banned
Joined 2005
E180F have similar characteristics to the D3A so it can be used in the phono stage but ........

1) the voltage gain is 50 instead of 77
2) the internal reistance id 2.4ohm instead of 1.9Kohm
3) it is more expensive on european market

The pin are compatible and probably also the operation point should be the same.

Sure to use it ?
 
You must log in or register to reply here.
Top Bottom