Thiel’s long-awaited trickle-down speaker from 2008’s ground-breaking CS3.7
, the CS2.7 ($9900/pair), made its North American debut in one of the Denver Audio Designs rooms. It combines the coaxial HF/MF unit that the late Jim Thiel developed for the ‘3.7 with a proprietary 8” woofer, reinforced with a passive radiator to give claimed bass extension to below 35Hz. Frequency response is specified as 35Hz20kHz ±2.5dB, and crossover filters, of course, are all first-order. (No impedance spec was given; Thiel speakers have always been current-hungry.) The CS2.7s were demmed with Aragon Iridium 400W monoblocks ($7998/pair), an Aragon Sound Stage digital preamp ($4499), an Arcam CD37 SACD/CD player ($2299), an Arcam FMJ D33 D/A processor, and Straight Wire Expressivo interconnects and speaker cables, and Straight Wire Blue Thunder AC cords. The sound of Ryan Adams’ “Dirty Rain” had extended lows, grain-free highs, and superbly stable, well-defined stereo imaging.