2. amps-preamps
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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

Showing 2 responses by georgehifi

georgehifi's avatar
georgehifi
10,312 posts
 
Pierre1976: So which tube preamps are great with Pass?Pierre1976:

Most Pass amps have very low input impedance Pierre, for a good match this dictates the necessity to use a preamp that has very low output impedance in the order of 100ohms will be a safe bet, most good solid state preamps will do this as they are 10 to 50 ohms. But your preference is for tube so check and double check that the output impedance of the tube preamp is in the order of 100ohms or so, before spending the bucks.

Cheers George
georgehifi's avatar
georgehifi
10,312 posts
 
Depends which Pass amp, a lot of the Passlabs poweramps are very low input impedance, which are not very freindly to most high output impedance tube preamps.
Do your home work first the output impedance of the preamp should be at least 3 x or more lower than the input impedace of the poweramp it has to drive.

Cheers George
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