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Questyle - CMA Fifteen
DAC/Headphone Amp
Questyle CMA Fifteen is the latest evolution in Questyle’s ultra-high performance compact headphone amp/DACs. In addition to Questyle’s well-known proprietary technologies, the CMA Fifteen includes analog inputs, allowing it to serve as the preamp/DAC hub for a simple audio system of extraordinary performance and reasonable cost.
The CMA Fifteen commemorates 15 years of Questyle products utilizing Current Mode Amplification (CMA), and takes that technology one step further by directly coupling a Current Mode DAC with CMA. The output of most DAC chips is in current form, which is then amplified as voltage, following conversion by an intermediate stage. The M15 directly feeds the DAC’s current output into four balanced current mode amplification stages, eliminating unnecessary complications, and resulting in sound quality of unrivaled clarity and purity.
Other noteworthy features and design elements of the CMA Fifteen:
Current Mode Amplification: the patented amplifier module provides high current output, vanishingly low distortion of 0.0003% THD+N, and astonishing signal-noise levels of >119 dB. The extended frequency response and wide dynamic range will bring out the best from any headphone.
DAC chip is the ES9038PRO, the flagship unit from ESS, the most powerful performance of any ESS chip to date. PCM is processed from 44.1khz-768kHz/32bit; DSD is processed up to DSD 512.
MQA files are fully decoded and authenticated, verified by front-panel indicator lights.
LDAC Bluetooth provides data transmission 3x that of standard Bluetooth, allowing wireless transmission of hi-res signals.
USB-C input is provided in addition to the standard USB-B input, supporting Apple Music Lossless.
Headphone connectors are provided for 6.35 mm standard unbalanced, 4-pin balanced, and 4.4.mm balanced.
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