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频率响应问题
最近看到两则广告,对其中的带宽指标很困惑,有必要达到这样的宽度吗?希望听听行家的意见。广告如下:
Soulution 700 Monoblock Power Amplifier
Type: Monoblock power amplifier
Power: 430W at 8 ohms, 860W at 4 ohms, 1560W at 2 ohms (bridged mode); 110W at 8 ohms, 220W at 4 ohms, 440W at 2 ohms (bi-amp mode)
Current: 60A maximum
Bandwidth: DC to 2MHz
Damping factor:Greater than 10,000
Signal-to-noise ratio:Greater than 108dB
THD: Less than 0.00058%
Input impedance:47k Ohms (XLR), 10k Ohms (RCA)
Output impedance: 0.001 ohm
Price: $115,000 the pair
Solution 720 Solid-State Preamplifier
Type: Full-function preamp
Inputs: Two RCA, three XLR, one moving-coil phono (RCA)
Outputs: XLR and RCA
Bandwidth:DC to 1MHz
Signal-to-noise ratio: 130dB
Channel separation: 105dB
THD: less than 0.0006%
Phono gain:54dB, 60dB (switchable)
Input impedance: 2k Ohms (XLR), 47k Ohms (RCA)
Output impedance:2 ohms (XLR and RCA)
Price: $40,000 |
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