Which Threshold s are best?

Why don't you pose the question to hime or others at the DIY.com BB which he posts at .

Not trying to say you will not get an adequate answer here,but it just stands to reason that there you might get some more or different feedback.NP might answer your question himself.

Another point that should be made is that synergy is everything and you should match your speakers with a particular amp that is known to work good.

The opinions I have heard favor the SA series and T series. I would much rather use a ClassA than AB amp ,but watch the electric bill. NP says his amps should be left on 24\7.

Good luck!

The T series of amps were not designed by Nelson Pass. These are amps that were designed after he had sold Threshold. This is NOT to say that they are bad amps, they just aren't of Nelson's "bloodline". The Forte' 4, 5, 6, 7 & 55's were also post-Pass products. Sean
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Any word if Jon is still in business, the www.vintageamp.com site has been down for a week now, though I did find an old cached site on google:

http://216.239.41.104/search?q=cache:dthb6U_HCYMJ:www.rsvlonline.net/vintageamp/+jon+soderberg+forte+vintage&hl=en

Sean, I would love to "pick your brain" and see what mods you recommend on the Threshold/Forte line.
Peace,
Todd

I have a THRESHOLD SA/20M power without pre but unfortunatly I dont know anything about it. I would be pleased if you help me to find out the answer of some questions:
1-general information about it.
2-which pre is better to match with this power.

The Best Threshold amps designed are the SA Series amps.
These are Pure Class A Designs. And are the top designs of Nelson Pass.

Here are the top 3 Best Sounding and Quality made Threshold power amps. I have had every Threshold amp in the last 25 years.

1) Threshold SA/1 mono blocks with e mod in balance mode.Also love those Big Analog meters !

2)Threshold SA/4E stereo amp in balance mode.

3)Threshold SA/12E (as you know these amps) in balance mode.