Looking for Forte 1A 50w Class A replacement for Thiel 3.6s


After 40 years I may need to upgrade my  power amp lol.   It is a great high current 50 wpc class A , but soon it will be 45 years old.  I have not been keeping up on all the new high-end amps that can drive with high current the low impendence of the Thiel 3.6 that  will delver HQ presentation  Sure, 200 W  would be nice , but I listen low /medium levels, and don't need the demand of  5- 8 DB  more volume. 
Any 3.6 users out there with a highly musical recommendation in the 75-150 watt range, not too edgy suited for the Thiel 3.6?    PS I have the matching Forte  Model 2 pre-amp , all Nelson Pass builds  from mid 80s. 
 
gomemore3
my concern if i send to Jon and spend $800 and the transistors go, I believe we are done... finee,   correct? maybe not



If they are not available any more I'm sure there are substitutes that are probably even better today. Jon will know, ask him.

Cheers George
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Gents thanks an for the input.
1. I will  look  at and join the Thiel owners page..
 2.  I had  a serious  capable technology guy of  the past 40 years re-bias  in the last 6 months, did  some refresh and it operating great , my concern if i send to Jon and spend $800 and the transistors go, I  believe we are done... finee,    correct?  maybe not
gomemore3
Looking for Forte 1A 50w Class A replacement for Thiel 3.6s
"but I listen low /medium levels"
I’ve owned both, and individually both are very very good.
Your very lucky you only listen low/medium levels, the Forte would have sufficed and done the 3.6’s proud. I would have clipped the Forte at my levels, Thiels loads not a problem, but 86db and only 50w is for me.
Just pay and get it re-built, by a well known repair technician, like Jon Soderberg
http://vintageamprepair.net

Cheers George
Honestly, for the Thiel 3.6's the Forte' can easily be improved upon by an amp that truly has the current to deal the Thiel 3.6's impedance load. Ideally you'd have an amp capable of at least 400 Watts into 2 Ohms. Or a 100 Watt amp that can double down and double down again. It's the impedance capability rather than ultimate power that is key. Having an amp rated or better yet independently measured into both channels at 2 Ohms is where to start. 
+1 tls49! That would be my recommendation too! That pair of Forte gear deserves refurbishment! 
What @tls49 said. If you like it, and it meets your needs, refresh it and enjoy for many years to come.
Obviously you've been happy for the past 40 years and I understand as I have owned Forte and Threshold Class A amps, so why not send the Forte 1A to Jon Soderberg at

http://vintageamprepair.net

Doing a rebuild on it will make it better than new and you'll be good for another 40 years. You could also have them rebuild the preamp.

I would try a McCormack DNA amp.  They are also getting a bit old but I believe the guys can still service them.  They sound incredibly good and have plenty of power.
gomemore3

Feel free to join us over on the Thiel Owners thread. Several fans of the 3.6 model for you to interact.
Happy Listening!