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Which B&K ST-140?

OK, I simply have to hear what I'm missing--especially up high--with my old tube gear. After lots of reading on this wonderful website, the B&K ST-140 seems a good quality-vs-cost choice to try.

But which ST-140? The 70w? 105w? only the blue and red one? I only care about which sounds best, especially at the high end.

Thank you!
river251
theaudiotweak
2,801 posts
 
2 output devices per channel. Less there is the better. Tom
yspm
15 posts
 
The consensus on re/blue vs. gold is mixed. Most opinions I have heard favor the red/blue 105W for sound and ability to drive low impedance loads. Most opinions hold them as only subtly different sounding.
http://forum.audiogon.com/cgi-bin/fr.pl?aamps&1074209541&read&keyw&zzst-140+red+blue
http://forum.audiogon.com/cgi-bin/fr.pl?aamps&1163363785
http://forum.audiogon.com/cgi-bin/fr.pl?aamps&1201935167&read&keyw&zzst-140+red+blue
unsound
7,329 posts
 
The B&K ST 140 is not the best choice for low impedance speakers.

http://www.stereophile.com/content/bk-st-140-power-amplifier-1989-measurements
lou_setriodes's avatar
lou_setriodes
687 posts
 
Yspm,
Here's the best part of the link from your post:

"Here is a partial list of amps that have been bettered by the little B&K in my system. Aragon 2004, Hafler Transnova 9300, Meitner STR-50, Sumo Andromada, Counterpoint SA-12, Denon 2200, ASL 1003, and several others I don't recall at the moment."

Curious to know what else was used in those systems that made the B&K come out a winner, but still very impressive...
river251 OP
154 posts
 
Unsound, revealing my ignorance, what is a low impedence speaker generally? I think most are 8 ohms, a few 4 I have heard of. Do you mean 4 ohm speakers? Why is the B&K not good for 4 ohm-ers?

Thanks....
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