Solid State Preamp Reviews

It doesn't take much to read between the lines of Sony's discontinuation of the TA-P9000ES analog preamplifier and their introduction of the SCD-XA9000ES SACD player with IEEE1394 digital output at Home Entertainment 2003. (A similar feature from the DVD-Audio camp has been promised.) Surely, we will at long last be able to have external digital processing and DACs in our preamp or control units. In addition to the freedom to mix and match components, this opens the door to having a single digital component manage bass and channel balance for all sources, and room/speaker correction without redundant redigitization.

I've spent six-odd years in a sort of hi-fi counterculture, playing with things like mono cartridges, one-box CD players, and cheap, homemade cables—and, of course, owning and listening to single-ended triode (SET) amplifiers and horn loudspeakers. But before all that, I owned components that, while more mainstream, did the job just as well in certain ways. That category included solid-state electronics (Naim, BEL, Spectral), dynamic loudspeakers of middling efficiency (ProAc, Epos, Magneplanar), electrostatic loudspeakers of very low efficiency (Stax), and even "high-end" accessories like Tiptoes and Shun Mook Mpingo discs (which I still have, although my five-year-old daughter has more or less permanently co-opted the latter for playtime use).

Recording artists can reinvent themselves by crossing over into another style of music. Gloria Estefan, who started with Latin music, crossed over into mainstream pop with great success. Doug Sax, who reinvented the direct-to-vinyl disc and produced outstanding LPs for Sheffield Lab, eventually transferred all of his music to compact discs. Ivor Tiefenbrun, designer of the Linn Sondek turntable, now makes CD players.

With whom are you most intimate? Your wife? Husband? Your modern-times Significant Other? Your pet? Or, like a lot of audiophiles, is it your audio system? Do you nitpick and tweak it as if it were your pet?

Sony describes the $700 TA-P9000ES as "a pure audio multichannel preamplifier equipped with two inputs for 5.1 analog multichannel audio sources, enabling selection, volume control, and amplification." A relay with twin gold-plated crossbars switches the two six-channel sources. Then follows a class-A solid-state push-pull amplifier in discrete configuration. Separate transistors, resistors, and capacitors populate the printed circuit boards. An oxygen-free copper shield surrounds each channel to prevent crosstalk between the channels. In addition, there is a relay-controlled gain stage offering 0, +6, and +12dB amplification.

Few topics will get audiophiles into an argument more readily than a discussion of the relative merits of tubed and solid-state equipment. A poll on the Stereophile website showed 53% of respondents choosing solid-state as their preferred amplifier design, while 38% indicated a preference for tubes—the remainder choosing "other," which presumably means digital amplifiers. (There has been no corresponding survey regarding preamplifier designs.) Opinions tend toward the dogmatic, with one respondent declaring "solid-state is more accurate," another stating unequivocally that "tubes sound closer to the real thing."