Hey Syntho, it's been a long while since I read the manual (and for those those who want to understand reverb and its multiple variable/parameters it's a great read
). The QV was the frst multi Fx unit I came across, prior to its release, each of the 4 Fx (EQ, PCH, DLY, REV) you bought as separate units (rack or stomp). So it helps (IMO) to treat them all separately, particularly as the QV has a bunch of config/routing/mixing options and they centre around thinking this way eg the Delay get it's input from EQ or PCH and PCH can get its input from EQ etc, and you can feed somethings into the left and others to the right of each section. They also each have individual input and output levels, so getting the gain structure of any given patch in it can get complicated (and thus trigger some leds). As with MP-1, if clip leds go off, it just indicates a certain level of signal, is it distorting ??/digital clipping ?? if not your are still within the headroom of the unit (though no doubt getting close to clipping
). I don't use the EQ so I'd leave it out (less stuff to go through in the signal chain), and rarely I'd use the PCH (I used to use some Flange). I use a mild stereo delay which is then fed into the REV (and I find Chamber works well for guitar). So I just have to worry about DLY input/output > REV input/output (and overall in/out). The more simple configs should trigger less leds (as you report) as there are less gain stages, each of the 4 Fx (EQ, PCH, DLY, REV) can add (and take away) a bunch of signal gain.
While you can dive right in and play with the factory presets, it's probably worth building a sound (Fx) one at a time. Eg, select just a reverb and get it sounding how you like, then add some delay, again balance the gain settings and the sound you want then add some PCH (if you want some flange or phase or leslie), chorus I'd leave to your ADA (but whatever..), and yeah it's got a graphic EQ, EQs are dangerous, they can add and/or take away allot of gain and (IMO) should be used very sparingly/carefully. I've never used the EQ in my QV, I never had the need so I've no idea how good it is, I'm sure it's fine (but why use digital EQ when you have great analogue EQ in you preamp ?)