Lamm Industries L2.1 Reference preamplifier
"As the original L2 circuitry was virtually flawless, it was the emergence of new electronic components that opened up a possibility of [even better performance] . . ."
So begins one of two bookletsone a collection of specifications and interior photos, the other a distinctly thorough user's manualincluded with the new L2.1 Reference line-level preamplifier from Brooklyn's Lamm Industries, earlier products from which have impressed me as among the best available. Indeed, coming from almost anyone else, the above quote would strike me as trivial boastingbut I know from experience that there's nothing trivial about designer and company head Vladimir Lamm.
As I write these words in January 1991, we're right in the midst of an annual media feeding frenzy: the "Best of the Year" follies. This usually takes the form of lists compiled in groups of ten for reasons that must hearken back to some obscure Druidic practice. You know the routine: "Ten Best Books of the Year," "Ten Best Films of the Year," "Ten Top Personalities of the Year," "Ten Best Sports Plays of the Year." Every corner of the media seems eager to get into the act. Special-interest magazines are hardly immune. Car enthusiasts can get their fill of "Cars of the Year." Computer literates find their favorite rags full of the "Ten Best Computers/Computer Accessories/Computer Programs." And music magazines regale us with the "Ten Best Recordings of the Year." Everyone with access to a transmitter or printing press has got, it seems, a little list.
Sumo is one of a handful of American audio manufacturers dedicated to producing moderately priced products aiming for high-end sound; their most expensive product is the Nine Plus, at $1199 (although a more expensive 
Choosing a moderately priced preamp has traditionally presented the audiophile with a host of serious problems. Most attempt to be all things to all listeners, expending resources on bells and whistles which would have been better expended on basic performance. Few have anything resembling a decent moving-coil stage. But there have always been a few designers (and companies) willing to expend much of their effort at the "low end of the high end." PS Audio has been such a company. Their new 4.6 preamp, an update and cosmetic clone of the earlier, well-received 4.5, is not at the top of their preamp rangethat honor belongs to the 5.5but it is clearly designed to be more than a price-point product.