A stunning jazz discovery presented at a historic citadel of recording technology. That event took place June 11, when the new John Coltrane recording, Both Directions at Once: The Lost Album, which will be released June 29, was unveiled at Van Gelder Studio, the fabled location where the celebrated engineer recorded many jazz masterpieces.

Stop me if I've said this before (okay, I have): There's much to be said for integrated amplifiers. While separates have long dominated high-end audio, an increasing number of integrated products not only bundle a preamp and power amp, but sometimes add digital inputs of various flavors, phono stages, bass and treble controls (long on life support in audiophile gear), and more.