Several seconds after I began listening to it, I knew that Theta Digital's Prometheus monoblock amplifier ($12,000/pair) was different from other amplifiers. The violins and brass were more dynamic, and had more pace. The orchestra sounded more three-dimensional, depicted in relief by a degree of hall ambience I hadn't heard when I played the same recording through my reference solid-state stereo amplifier, a Mark Levinson No.334.

Publisher's Note: For the first time since I've published Stereophile, we are running two completely different—and opposed— reports on the same product. Normally, we try to reach some conclusion as to why reviewers come up with opposite views on a product, and resolve the problem prior to publication. In this case, the problem lies in the differing sound systems used for review. Since some readers will have systems like SWW's, and others will have systems more like JGH's, I felt it was valuable to run both reviews.

For the record, SWW's reference system consists of Dayton Wright XG-lO speakers, BEL 1001 amplifiers, a Klyne preamp, a SOTA Star Sapphire turntable, the Well-Tempered Arm (or Sumiko Arm), and a Talisman S cartridge. The sound on analog disc is far preferable to that from CD, being much more alive and present, and with a tendency to exaggerate sibilants. The low end of the system is awesome, the high end extended, and transients are rendered with a great feeling of immediacy and quickness.

Register to win a Synergistic Research Acoustic Enhancement Atmosphere (MSRP $2,250.00) we are giving away.

According to the company:

"The Synergistic Research Atmosphere is a room acoustic enhancement device that allows one to modify and improve the perceived soundstage as well as the quality of the sound from top to bottom of one’s system; all of this totally controlled by an iPad/iPhone app."

[This Sweepstakes is now closed.]

Estrella Morente: Amar en Paz
Estrella Morente, voice; Niño Josele, guitar
Calle 54/Sony Music 88875011922 (CD). 2014. Fernando Trueba, prod., exec. prod.; Nat Chediak, exec. prod.; Jose Luis Crespo, eng.; Jim Anderson, mix; Alan Silverman, mastering. DDD? TT: 66:29
Performance ****
Sonics ****½

What makes a great singer great is a magical combination of virtuosic physical skills with mental and emotional powers of interpretation that allow you to hear and feel a lyric's subtext: the emotions the songwriter hoped to evoke by a turn in the melody.