Greg.Bassman Posted September 30, 2015 Share Posted September 30, 2015 Hi all. Shopping for an expression pedal, to control the decay on some of my effects. Have my eye on the FV-500's. I understand build quality on these are superb- so no worries there. Just wondered what the difference is between LOW and HIGH impedance though? and how will each effect my effects? Cheers. Quote Link to comment Share on other sites More sharing options...
Nessy Posted September 30, 2015 Share Posted September 30, 2015 The FV-500H has a high(ish) impedance input, so you can plug a guitar straight into without loading down the signal too much - plugging a guitar straight into a low impedance input would significantly attenuate treble frequencies and possibly cause a volume drop. The FV-500L has a low impedance input, designed typically to accept the low impedance output of an effects pedal (or a keyboard for example). It also has stereo inputs and outputs. So the impedance issue is only really of relevance to it's function as a volume pedal, not an expression pedal. As far as I know both versions have the same expression pot value (B10K - the FV-500L definitely does, I have one). So if you're only ever going to use it as an expression it doesn't really matter which you go for. If you ever plan to use it as a volume pedal however, then you'd want the FV-500H if you're plugging a passive guitar/bass straight into it. The FV-500L can be used if an effect(s) is between it and your instrument, however a FV-500H can be used this way also. In this respect the FV-500H is more flexible. Personally I wouldn't plug a bass straight into a FV-500H because it's input impedance is still a bit on the low side (250K I think) - I'd have an effect/buffer first then the volume pedal. It's a good pedal build quality wise though, feels sturdy and easy to use. Quote Link to comment Share on other sites More sharing options...
Greg.Bassman Posted October 3, 2015 Author Share Posted October 3, 2015 Hi Nessy. That's great, cheers for your reply. Appreciate it! Quote Link to comment Share on other sites More sharing options...
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