Thor ta-1000 pre cap replacement -- advice

only a few options of v-caps left.  Copper or ODAM  the Odam have worked very well in upgrades/modifications we have performed.

If the AN caps end up sounding a tad too warm and or tame, then your best bet are the Vcap Odams. I upgraded two Thor preamps like yours over the years and the Odams are a great match for this unit. They are also smaller in size and fit well.

I did use the AN copper foil caps once in the Thor and changed them out in the end. Nice warmth and body for sure. In the end I found them a tad dull or dark in the upper mids and highs. Bass is also more rounded and less articulate than the Odams.

Its all about system synergy and your sonic preferences in the end.  Your system and ears may prefer the warmth and slight darkness on top of the AN caps. If not, you have a great option! 

PUBLIC SERVICE ANNOUNCEMENT - because there is SO little available on the wonderful-but-obscure Thor TA-1000 "donut" preamps I have posted photos of the Vcap upgrades to mine. Four photos of the board are now shown on my System page called Heavenly Match. I make NO representation that this is the only (or even correct) way to do it, but I *sure* do like what I hear! And I’m not a total hack as I have a PhD in Electrical Engineering (unlike Ted D. and a few others I could name :o)

I’ll go back and see if I can add a photo of the Khozmo volume control as that was also a big improvement over stock.

Always good to listen to Grannyring! It's been a while but I think he helped me when I was looking at caps for my Thor years ago. I am one of those guys who absolutely loved the audio note copper mylar caps with it. But I am someone who loves organic rich textured sound, not the last word in extension or incisiveness. Enjoy the Thor... what a great preamp.

It is a wonderful preamp and still a great value used. I know it sounds beautiful with the AN caps and am happy for you. Amazing how changing caps can change the sound of gear to be subjectively more enjoyable!