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Re: any problems using a passive pre amp with a valve amp?

Posted by JRGTR on September 30, 2001 at 10:43:33

In Reply to: any problems using a passive pre amp with a valve amp? posted by sxroper@hotmail.com on September 30, 2001 at 04:41:17:

Building a system around a passive unit is a nightmare. You need to have ALL the system in tune with the special requirements a passive needs to works properly. You need a high input impedance and sensitivity at the power amps (ideally higher than 100 Kohms and 1 volt sensitivity or better for full output) A source with 2 volts minimun output (higher the better) and impedance output lower than 100 Ohms (lower the better). You definitely need interconnects screened and with the lower possible capacitance and shorter possible lenght (Nordost Quattrofil are an ideal choice).

You need ALL this requirements. If you failed in one of the requirements then it´s very possible you obtain an horrible sound. But if you have all the system "in tune" then I can assure you a good passive like my Audio Synthesis Passion Ultimate will beat ANY active preamp at ANY price (I´ve tried a demo at home with the Conrad Johnson ART versus my Audio Synthesis Ultimate, and the AS Ultimate wons every time)

Hope this helps.

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