Regrets gnaw at record collectors. There's always the one that got away: because I failed to buy it, or could never find a good copy of it, or unwisely loaned it, or stupidly discarded it in the CD era's initial flush of enthusiasm and confusion. Over the years I've whittled down my list of regrets with strategic secondhand buys. But a few regrets have remained, and when they affect my relationship with the Beatles or the Rolling Stones—crucial touchstones for a fiftysomething music lover—they're especially painful. I was never lucky enough to find a pristine pressing of either Abbey Road or Beggar's Banquet. However, a recent turntable purchase and an unspent balance in my PayPal account recently drove me to banish these gnawing regrets once and for all.

Bis is a Swedish music label with a large catalogue of Super Audio CDs. Among them are two releases that have become my go-to choices for major works in the orchestral repertory: Beethoven's nine symphonies and Bach's six Brandenburg Concertos. Both are DSD recordings, less than a decade old, with surround and stereo soundtracks. They'll cost you more than most CD box sets of the same works. But the chance to hear these vibrant performances in high-res DSD via SACD is well worth the price. Think of surround as icing on the cake.

Whenever I see a bunch of people running in one direction, I run the other way. Let them paw over whatever is enjoying its 15 minutes of fame—I'd rather explore what they've overlooked, at a leisurely pace, in splendid isolation. During the waning days of the LP era, just as the CD's "perfect sound forever" campaign was coming on strong, I refrained from discarding most of my vinyl. Oh, I bought CDs, especially for new releases. But I also haunted the Tower Annex in Lower Manhattan, filling holes in my classical library with used LPs at two or three dollars a pop. For a junior-grade inkstained wretch, vinyl was more affordable than full-priced $15 CDs (in 1980s dollars) though I bought plenty of those too.

Denon and Marantz are the first non-Apple manufacturers to incorporate AirPlay audio streaming without the use of an AirPort Express device. An AirPlay logo appears on your iPad, iPhone, or iPod touch (running iOS 4.2 and up). Press it and a drop-down list of compatible devices appears. Thus you can take music from an Apple mobile device, or a PC or Mac running iTunes, and stream it hither and yon to your Denon/Marantz toys. The capability is built into four Denon a/v receivers -- the AVR-4311CI, -3311CI, -991, and -A100 100th anniversary model -- plus the N7 tabletop system. Also on board are Marantz products: the SR7005 receiver, AV7005 pre-pro, NA7004 network audio player, and M-CR603 network CD receiver. You can get the software upgrade for $50 two days from the publication of this item. (Photo: Lisa Cazzola.)