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<blockquote data-quote="Bandieramonte" data-source="post: 6292434" data-attributes="member: 611675">I got some questions regarding some technical specifications for amps, specially the ones that affect the sound quality. The questions are the following:1) Regarding the signal/noise ratio, some amps have their manual describing as:Signal-to-noise ratio: 85dB (reference 1W into 4 ohms)Signal-to-noise ratio: 104dB (reference rated power into 4 ohms)That confuses me a lot. What is finally the final signal/noise ratio in that case?2) Regarding the THD factor, some amps have their manual describe it this way:100W RMS x 4 channels @ 4 ohms and ≤1% THD + N*THD + N: 0.05% (rated power @ 4 ohms)But when will the THD be 1% and when will it be 0.05%?3) How do I know if an amp is capable of doing a bi-amping setup with a set of comps? Can all 4 channel amps may do this?4) If I bi-amp an amp being 100 rms x 4 to a set of comp, does that necessarily means that it will be sending the whole 100 rms to each driver of the comp without possibility to lower the amount of power the amp sends per channel? (in other words, can bi-amping be flexible regarding the amount of power it sends per channel)?5) What would be better SQ wise for powering a set of comp SR6500: the JBL GTO1004 or the Focal Solid 4? Why?Thanks.</blockquote>

[QUOTE="Bandieramonte, post: 6292434, member: 611675"] I got some questions regarding some technical specifications for amps, specially the ones that affect the sound quality. The questions are the following: 1) Regarding the signal/noise ratio, some amps have their manual describing as: Signal-to-noise ratio: 85dB (reference 1W into 4 ohms) Signal-to-noise ratio: 104dB (reference rated power into 4 ohms) That confuses me a lot. What is finally the final signal/noise ratio in that case? 2) Regarding the THD factor, some amps have their manual describe it this way: 100W RMS x 4 channels @ 4 ohms and ≤1% THD + N* THD + N: 0.05% (rated power @ 4 ohms) But when will the THD be 1% and when will it be 0.05%? 3) How do I know if an amp is capable of doing a bi-amping setup with a set of comps? Can all 4 channel amps may do this? 4) If I bi-amp an amp being 100 rms x 4 to a set of comp, does that necessarily means that it will be sending the whole 100 rms to each driver of the comp without possibility to lower the amount of power the amp sends per channel? (in other words, can bi-amping be flexible regarding the amount of power it sends per channel)? 5) What would be better SQ wise for powering a set of comp SR6500: the JBL GTO1004 or the Focal Solid 4? Why? Thanks. [/QUOTE]

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