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Preamp for Pass

I have a ARC LS26 preamp, but thinking about trying something else, but still a tube preamp.

I have tryed the DIY Tram II witch was fitted with duelund compoens and others opgrades. that sounded great from the midrange and up, but lacked some in the bass, compared to my LS26.

So witch tube preamps are great with Pass?
pierre1976
pubul57
3,712 posts
 
Can't see why the LS26 would have an impedance mismatch issue with the Pass amps, seems to be perfectly within the theoretical impedance considerations, as it has fairly low output impedance to a tube line stage (350ohm SE) - which does not mean it is an ideal match sonically, just that impedances should not be of significance in the pairing.
unsound
6,115 posts
 
Atmasphere or Sonic Frontiers?
ozzy's avatar
ozzy
3,650 posts
 
I had a Cary SP-05 Preamp with my Pass Labs X350.5. There definitely was an impedance mismatch with this combo. Very little bass and treble. Sold the Cary and bought the Pass XP-10.
grannyring's avatar
grannyring
4,637 posts
 
Just need to know the spec on both before we can make a determination.
pubul57
3,712 posts
 
Whatever problems there were, it was not an impedance issue, the Cary has only a 400ohm output impedance - that should work with most any amp, even Pass' "tough" input impedances.
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