Michael Fremer

Talk about a Scarlet Letter. The term class-D amplification, which describes PS Audio's new M1200 monoblocks, exists only because another amplifier innovation had already parked in the "C" space. Soon after appearing in high-performance audio gear, class-D became synonymous with "digital amplification" in part because, like early CDs, many listeners found the sound glary, hard, and unpleasant. Besides, class-D is related to "pulse width modulation" and requires a low-pass filter to block high-frequency pulses—that sure sounds digital. But they're not (see Bruno Putzeys sidebar).

Let's begin by discussing what SAT's XD1 Record Player System is not: It is not a Technics SP-10R in a sci-fi–inspired plinth—although the XD1's engine does begin life as the SP-10R's basic drive system, which is stripped down to a handful of essential components, reimagined, reengineered, and rebuilt to much higher mechanical standards.

At High End Mässan 2015—Stockholm, Sweden's big audio show—Marten planned to show off its finest loudspeaker to the hometown crowd. Marten took the hotel's largest demo room, located at the prime location at the top of the stairs, at the entry point to the 2nd floor exhibition space. There, Marten set up a super system (see photo below) featuring the Coltrane Supreme 2 loudspeaker, a towering monolith probably intended more for Asian consumption than for Swedes to bring home to their modest digs. In preshow demos, the Coltranes filled the large room with impressively transparent and effortless sound that was sure to impress show attendees.

How goes your quarantining? Honestly, my life hasn't changed much here. I'm locked in the basement as usual, happy to have a good audio system and overwhelmed by my musical choices. Other than minimizing shopping expeditions and wearing a mask, the biggest change in my life is a spike in requests from readers for upgrade advice. I've never been so busy answering reader emails.