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stereophile网站倒有评测 Boulder 2010: Balanced line preamplifier with 6 inputs, 2 main outputs, 2 record outputs. Maximum input level: 7V RMS. Maximum output level: 28V RMS. THD+noise (2V output, 20Hz-5kHz): 0.0008% (-102dB); THD+noise at 20kHz: 0.001% (-100dB). THD with output loaded with 150 ohms: <0.5dB distortion change. Maximum voltage gain: 20dB. Record path gain: 12dB. Frequency response: 20Hz-20kHz, +0/-0.03dB. 0.02Hz-300kHz, -3dB. Channel separation (L-R or R-L): 136dB or better, 20Hz-20kHz. Crosstalk, adjacent inputs: -136dB or better, 20Hz-20kHz. Crosstalk, Main to Record: -132dB or better, 20Hz-20kHz. Input impedance: 333k ohms balanced. Output impedance: 100 ohms. Power requirements: 240W max (180W nominal). Dimensions: Preamp: 18.0" W by 6.875" H by 16.25" D. Power supply: 18.0" W by 4.25" H by 15.5" D. Shipping weight both: 63.5 lbs. |
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