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Rhode&Schwarz UPV – used for all measurements.
MEASURED PERFORMANCE
With volume at maximum, headphone output measured 1.6V, enough to go very loud with all headphones, including insensitive high-quality magnetic planars. Switched to Line mode, output measured 1.5V, less than a CD player but enough to drive any line input.
Dynamic Range (EIAJ) measured a healthy 110dB (111dB Line) with high resolution 24bit) digital, usefully above the 103dB achieved by CD. Distortion was low at 0.1%, as shown in our analysis. No distortion components are visible so ‘distortion’ here is noise, even though a narrow band harmonic-only analysis was used. Frequency response, with 192kHz sample rate files, reached 34kHz before a slow roll away to the 96kHz upper half-sample-rate limit. In all, the little X1 can drive high-quality headphones and has sufficient dynamic range to exploit the improvement offered by hi-res digital files. NK
Frequency response (-1dB) 4Hz-34kHz Distortion 24bit (%) 0dB 0.003 -60dB 0.1 Separation (1kHz) 102dB Noise (IEC A) -109dB Dynamic range 110dB Output (Phono/XLR) 1.6V
FREQUENCY RESPONSE (192kHz sample rate)
DISTORTION (24bit, -60dB)
DYNAMIC RANGE (24bit, -60dB)) 50.556+60= 110dB  |
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