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Audio and Video Talk
General Discussion
Matching pre-amp to power amp
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<blockquote data-quote="Tzs503gp" data-source="post: 1117622" data-attributes="member: 19443"><p>OK. I was confused by the implication that such a filter would be applied in the audible band. After all, what does it matter if a preamp has a 20dB/decade LPF knee at 25kHz summed with a power amplifier 20dB/decade knee at 25kHz?</p><p>It’s academic as far as playing music is concerned.</p><p>Power amps with input impedance of 10kOhm are plentiful. I own one. My DAC doesn’t like it. A preamp with better drive definitely has a place for such use cases even at the expense of extra noise/ distortion.</p><p>IMHO</p><p>Just playing devils advocate. I do prefer another amplifier which I can use directly from my DAC/pre.</p></blockquote><p></p>
[QUOTE="Tzs503gp, post: 1117622, member: 19443"] OK. I was confused by the implication that such a filter would be applied in the audible band. After all, what does it matter if a preamp has a 20dB/decade LPF knee at 25kHz summed with a power amplifier 20dB/decade knee at 25kHz? It’s academic as far as playing music is concerned. Power amps with input impedance of 10kOhm are plentiful. I own one. My DAC doesn’t like it. A preamp with better drive definitely has a place for such use cases even at the expense of extra noise/ distortion. IMHO Just playing devils advocate. I do prefer another amplifier which I can use directly from my DAC/pre. [/QUOTE]
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Audio and Video Talk
General Discussion
Matching pre-amp to power amp
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