For those of you not up on your Greek mythology, the Sirens were the archetypal seductresses whose sweet songs lured sailors to drive their ships upon the rocks. Siren CD players are those that soften and sweeten the sound. Their primary purpose is to seduce, to give a false sense of comfort to their victims; their fidelity to the truth is secondary to their desire to elicit a positive emotional reaction.

Nelson Pass's Lab has produced an impeccable headphone amplifier with more than enough power, that's quiet, solid, and very clean. Several other reviewers have reflected on this excellent amplifier, but I want to weigh in with my unique sonic perspective and also measurements of its performance.