Frank's Ultimate Tube Preamp.

[fdegrove]

Hi,

Originally Posted by 6BG6GA

Per post #74 this would appear to be the power supply

That's more like it.

Guess I redesigned that reg to take a 12AX7A after all.

Cheers,

[fdegrove]

Hi,

Originally Posted by thor61

Could someone post the schematic for the CD line preamp feeding a ECC99....

That's either going to be a White CF or an SRPP but it's in here somewhere...

Cheers,

[davew]

I have just built this for use with my home made stereo KT88 SE amp. see pic.



I have added this ECC88 phono stage to one input and I am amazed how good it sounds.

http://phonoclone.com/diy-pho3.html

I used AC heaters throughout and there is no hum at all. The phono stage is seperately screened which allowed me to route the heaters outside of the can.

The power transformer came from a 50's amp chassis I got off eBay and the two chokes came from an old regulated HT PSU.





I am using 7N7 valves with home made 6SN7 Octal to 7N7 Loctal adapters.

The side Phono sockets are now tape out( just fed via 2 x10k resistors from the top of the volume control). I have used these to record LPs on my Mac with excellent results.

My thanks to Frank for a great and simple design.