2. amps-preamps
  3. 1068600611

any krell power amplifier users use tube preamps?

Hi,

I was wondering if any krell full power balanced amplifier users 300c, 400cx, or 700cx owners use tube preamp? If so, I have a 400cx and am in process of buying on audiogon a high end BAT tube preamp. I am concerned that even though both Krell and BAT told me in emails that I sent them that the BAT will work fine with the krell amp, the krell 400cx manual states that prior to using a tube preamp one should have a krell dealer activate the coupling capacitors.

Well I bought the Krell on audiogon and so it would not be so easy to get a krell dealer to do this for me. Besides, the krell amp weighs a ton and can only imagine would require a krell dealer service person to come to my house!

Thoughts? Comments?

Michael

p.s. thanks in advance

Michael
radioheadokplayer

Showing 1 response by sfstereo

sfstereo
215 posts
 
Mike,

I have Krell amps but I don't use a tube preamp with them. You can remove the jumpers in the amp yourself. You don't need to send it to Krell or need a dealer. Just remove the top cover and you'll see 2 jumpers on a small PC board located near the input connectors. The jumpers are next to a couple of small yellow color capacitors. By removing the jumper, the capacitors becomes in series with the input and blocks dc from the tube preamp.

Rich
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