riget wrote:
這是台灣第一篇開箱文...(恕刪)
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Apogee Electronics Groove: $295
After 30 years of designing and making pro-audio gear, Apogee has taken aim at the consumer market with the Groove USB DAC/headphone amplifier. Housed in a 3.7"-long aluminum case, the Groove uses an eight-channel ESS 32-bit Sabre DAC chip in a Quad Sum arrangement (four DACs per channel) for PCM input up to 24 bits and 192kHz. The Groove's (asynchronous) USB input is a Micro B socket, and its headphone output is a 1/8" jack; preceding the latter is a current-drive headphone amplifier—Apogee calls this Constant Current Drive—and a proprietary circuit that provides a variable output impedance, depending on the headphones used. Consequently, JI reviewed the Groove in combination with several different headphones (and in comparison with other DAC–headphone amps). Among the Groove's consistent strengths were its clarity and abundance of detail, which JI described while enjoying a Christy Moore track: "Through the Sennheiser HD600s, the Groove revealed every detail of Moore's great voice, each breath and reverb tail clear to the end." After conducting his measurements, JA concluded, "Overall, the Apogee Groove offers superb measured performance, which is even more impressive when you consider it costs less than $300!" (Vol.39 Nos.1 & 2 WWW)
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