Phono Preamp Reviews

I was walking through the woods one day when I happened on a large, flat rock near the base of an old ash tree. Conditioned as I am from such rambles with my daughter, whose interest in wildlife echoes that of my own childhood, I bent down and lifted one end of the rock, hoping to catch a glimpse of some exotic creature or another: perhaps a delicate ring-necked snake, or a plasticky-looking red eft. The rock came loose without too much effort and teetered on its broadest edge, but before I could let it flip to one side, I recoiled in horror: There, amid the millipedes and ant larvae, was a cluster of teeny-tiny, nasty-looking old men, writhing in such a tangle that I couldn't even count them. They were bespectacled, to a one, and mostly bald—I could tell quite easily, despite the berets worn by some of them—and each pair of feet was shod in a teeny-tiny pair of off-brand Birkenstock copies, with thin, shiny black socks underneath.

The German company AQVOX Audio Devices has produced an innovative moving-coil/moving-magnet solid-state phono preamplifier, the Phono 2Ci, that's as intriguing for its technology and performance as it is for its relatively low price: $1400. The zero-feedback, op-amp–free circuit uses a compact switch-mode power supply that's built into the chassis and features conventional voltage gain for moving-magnet cartridges via its RCA jacks, and current gain for moving-coil cartridges through the balanced XLR inputs. Rear-panel switches select between RCA or XLR inputs and offer a convenient ground lift. Either the single-ended or the balanced outputs can be used with either input. Unfortunately, the tight spacing of the RCA input and output jacks, which are mounted on the circuit board, will somewhat limit your choice of cables: Pairs of thick-barreled plugs will have difficulty fitting.

The Krell KRC-2 can be regarded as a remote-controlled successor to Krell's successful KSL preamplifier of a few years back. The outboard Krell Phono Equalizer (KPE) is a separate box powered from the KRC-2. Priced at $850, it contains a printed circuit board very similar, in fact, to the $499 unit that can be fitted within the KRC. The KPE and KRC phono stages are well-designed universal units; if someone has the need for a stand-alone phono equalizer of Krell KRC standard, a separate power supply may be purchased for the KPE. It is also an advantage to be able to locate the KPE head amplifier in a hum-free zone near the LP turntable.

Simaudio's Moon LP5.3 MM/MC phono preamplifier ($1400) is silly good! It has single-ended RCA inputs and both single-ended and true balanced-differential outputs. It also offers a wide range of adjustments for gain (54, 60, and 66dB), resistive loading (10, 100, 470, 1k, and 47k ohms), and capacitive loading (0, 100, and 470pF), all accomplished via a series of internally mounted jumper banks. You can even choose RIAA or IEC equalization. Removing the top plate to get to the adjustments reveals boards filled with high-quality parts for the well-isolated power-supply and signal-handling circuits.

"Everybody's gotta get into the act!" Jimmy Durante used to say. That's what's happening with phono preamplifiers—they just keep being built, and I keep getting them for review. Up for evaluation in next month's column are new models from Perreaux, Musical Fidelity, Graham Slee, and a Chinese one, Ming Da. You can bet there'll be more.

The original plan, back in mid-2004, was to audition an entire Ensemble system and then review the individual components over the next two years. Most audio companies produce lines of matching products, but Ensemble takes it a bit further, with a modular approach and extensive commonality of everything from chassis to circuit boards. They firmly believe that everything affects sonic performance, and their approach helps ensure a consistent sound throughout their line.

Like the $29,000 Boulder 2008 phono preamplifier, the new Whest PhonoStage.20 with its MsU.20 power supply costs as much as a car. Fortunately for you, that car happens to be my first new Saab, which cost exactly $2737 back in 1972. The solid-state Whest costs $2595, so it's a few hundred dollars cheaper. But at only a tenth the cost, it comes closer to the Boulder 2008's performance than it has any right to. That it's good enough to be mentioned in the same paragraph should tell you something about how good I think it is. Nor did it come to me hyped by the manufacturer—it took me by surprise from the minute I first heard it. I began my listening right away, before reading anything about the circuit design.