Placette, VS First Sound VS Audio Synthesis Passio


I'm looking for a very pure & simple passive preamp, 1IP, 1OP. Anyone do an A/B demo on these. I talked to Placette Audio and still don't understand how his unit functions. From researching I gather that an L-Pad design using only Vishey Resistors(inc grnd)is the way to go. There only would be 2 resistors in the signal path at all times no matter where the dial is....no relays..etc in the signal path. I believe Audio Synthisis uses this as well as the original First Sound reference II signature mono unit with vishay R which I never seen.

Will a remote add coloration as well as muting etc.
weaudiocables

Showing 5 responses by drubin

The $4000 Placette is active. The $4000 First Sound referred to above is active. Once upon a time, First Sound made passive preamps, but no more.

The cost of the Placette units is directly related to the cost of the many Vishay S-102 resistors in them.
I don't think so. Emmanuel Go is the man at First Sound (Presence is the model), and I'm sure he's done all the design work himself.
I used to own both the Placette and the First Sound. In the end, I kept the First Sound, but it was almost a coin toss. They sound very different from one another, but are equally worthwhile and appealing.
Returning to the discussion of the heritage of the First Sound preamp, I did a little digging. It seems that Mr. Go of First Sound commissioned P.Wietzel for a schematic of a tube preamp circuit. It was a very basic, class A triode with a tube regulator on the B+.

Mr. Go, with the collaboration of several other engineers (P. Weitzel not among them), designed the First Sound preamp in 1991. The first unit was sold in the fall of 1991. Since then, there has been a lot of work done to raise the performance of the First Sound preamps to their current level. This includes parts selection, chassis design and construction, circuit implementation, wiring choices, and the way all of these elements come together and are voiced to create the final product. In my book, Emmanuel Go gets full credit (and responsibility) for this preamp.