2. amps-preamps
  3. 167037-18279

KT150s in a Preamp Design?

I'm a bit of a shade tree tube amp mechanic;  I'm no expert and have a decent but not comprehensive knowledge of design.  Can someone tell me what's going on with this tube preamplifier design?  I've never seen KT150s in a preamplifier!

http://www.thebestamp.com/Tube_Pre-Amps/Reference_Series/Reference-3.php

Calling Atmasphere!  
128x128jbhiller
russ69's avatar
russ69
3,520 posts
 
You can use big power tubes in a pre-amp. Remember a preamp is just a low power control amplifier. It's a bit of overkill because a preamp doesn't need to make the kind of power a large power tube can produce. No idea on the sound quality though. 
petg60
1,486 posts
 
Yes you can, in power supplies, ARC for example is using 6550 in some of their Ref line. So why not a KT150.
jbhiller's avatar
jbhiller OP
1,437 posts
 
Got it.  That makes sense.  I'm wondering what the sonic benefit would be.  Seems that 6SN7 would be big enough.  A KT150? My lord!
noromance's avatar
noromance
9,853 posts
 
My phono preamp uses 7581A 35w power tubes in the power supply. The big supply gives more depth, space and air to the soundstage.
More to discover