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What will I expect to notice with a recap on a Stasis 3?

I recently purchased a completely original Threshold Stasis 3 amplifier. After blowing out the tremendous amounts of dust and visually inspecting, I hooked it up to my system. It still functions and sounds quite good. The bass is sloppy, female vocals are excellent and some mids get a little muddy at moderate volume. It is really pretty easy to listen to with minimal fatigue. Actually, sounds closer to my Conrad Johnson tube amp than the Krell. I expected a little more slam out of the Stasis but certain that some extra capacitance will help remedy that. If I were to recap, what improvements should I expect? Is this amp worthy of a rebuild? Is this amp a happy medium between an ultra analytical Krell and a gooey tube amp?
robbieshep
georgehifi's avatar
georgehifi
10,312 posts
 

robbieshep OP

Pleasure, looks like there are 6 X smaller electrolytic caps on each channel to be replaced, and the 2 big power supply ones, use .47uf plastic by-pass across each of the big ones, or the many little ones I linked to if you go that way, which I think you should for better dynamics and bass tightness performance. I would get 2 of these and give them to your tech, that will be 72000uf per channel not bad. https://www.ebay.com/itm/HITACHI-12000UF63V-6-Capacitor-Welded-Schottky-Rectifier-Filter-Power-Supply/312720173080?hash=item48cf932818:g:sJIAAOSwh8VdQvQR


Plenty info here on the board ones, and Nelson chimes in also.
https://www.diyaudio.com/forums/pass-labs/297464-threshold-stasis-3-amplifier-capacitor-replacement.html
Also here
https://www.diyaudio.com/forums/pass-labs/182177-threshold-stasis-bias-thread.html
Cheers George
georgehifi's avatar
georgehifi
10,312 posts
 
Here are your checking and adjustment tables
https://ibb.co/W5xNhRR
robbieshep OP
3 posts
 
George, I appreciate all of the great info. On the adjustment table, aren’t the s/300 and sa/3 different amps from the Stasis 3? 
georgehifi's avatar
georgehifi
10,312 posts
 
Yes they’re all different amps, I believe the Stasis 3 (which isn’t on that table) is just a higher rail volt version (more Class-B 150w) of the all Class-A SA3. only 30 or 50watts?
And the Stasis S300 is later and different to both SA3 and Stasis 3.

Cheers George
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