Phono Preamp Reviews

Trickle-down technology is a grand thing. It's comparatively easy to build an exceptional audio component when there are no constraints on technology, cost, user-friendliness, or lack thereof, but top designers are now packing more and more of the excellence of damn-the-torpedoes components into more affordable and accessible packages. Which brings us to the Aesthetix Rhea, a tubed phono preamplifier of exceptionally distinguished lineage.

Dr. Feickert Analogue's top-of-the line turntable, the Firebird ($12,500), is a generously sized record player designed to easily accommodate two 12" tonearms. Its three brushless, three-phase DC motors, arranged around the platter in an equilateral triangle, are connected to a proprietary controller in a phase-locked loop (PLL); according to the Firebird's designer, Dr. Christian Feickert, a reference signal from just one of the motors drives all three—thus one motor is the master while the other two are slaves. (Man, today that is politically incorrect, however descriptively accurate.)

ModWright Instruments' PH 150 moving-coil/moving-magnet phono stage measures 17" wide by 5" high by 12" deep and weighs 19lb. Knobs on its front panel let you easily make adjustments that with some phono preamps require accessing the rear panel or going inside. Starting at the left, the Select knob offers settings for MC, MM, and Mute. The Gain knob offers levels of 0dB, –6dB, and –12dB. With MC selected, those settings would correspond with 72, 66, and 60dB of gain, respectively; with MM, the numbers would be 57, 51, and 45dB, the last being more typical of most MM stages.

First, let's talk about problems with grounding and hum...

As I began writing this column, the terrible news arrived that Armando "AJ" Conti, founder of Basis Audio, had died of a heart attack at 59. A talented designer of turntables and tonearms, AJ was one of the warmest and more thoughtful people in the High End. Whenever I entered the Basis room at a Consumer Electronics Show, I had to be prepared to spend the next hour or more talking with AJ—not only about audio, but about coffee, motorcycling, metallurgy, or any other of his many passions . . .

Although Swiss-based CH Precision is a relatively young company, its core design team has been involved in high-performance audio for many years. Their website doesn't state the company's age, but something there did provide a hint: Among the design team's previous activities was work for another Swiss company, Anagram Technologies...I hadn't made the connection between Anagram and CH Precision when Raphael Pasche, the latter's electronics design engineer, visited last fall to install CH Precision's P1 dual-mono phono stage and the optional X1, a discretely regulated, outboard linear power supply that's claimed to exhibit ultralow levels of noise. The P1 can be ordered as a stereo preamp for $31,000; add $17,000 for the identically sized X1 power supply. Or one mono P1 can be used for each channel, for $55,000 plus $34,000 for two X1s. Expensive stuff.

Maybe you've seen the widely circulated New Yorker cartoon: Two guys stand in front of a nicely drawn, tubed audio system, under which are shelves full of LPs. One guy says, "The two things that really drew me to vinyl were the expense and the inconvenience."