Gorgeous, Useful & Mature   The Glow takes music reproduction a bold step forward from its kin, providing clean, smooth, accurate sound without the honey-like “warm” coloration that make tube amps a “love ‘em or hate ‘em” proposition for serious audiophiles.  Instead the full, mature, lush sound and pinpoint accuracy doesn’t so much emanate from an electronic device, but rather appears out of the ether of outer space, or an all but imperceptible breeze that stirs the hairs on your skin, without making the tiniest rustle or sound in the in the...