The HolyGrail is a digital pedal. It has a slider for choosing the type of reverb, and an effect level knob.

Question connectivity, it is powered by a mini jack 3.5 (no battery). All outlets are located on the rear panel. This is a good metal case, not too big and pretty.

UTILIZATION

Super easy to use. Nothing to say.

SOUND QUALITY

The Flerb is a reverb / flanger a little kitsch for my taste, I never use it. The other two reverbs are fine. The reverb is quickly "sticky" when the knob passes the halfway point. The sound is very nice, not chemical. on the other hand, it quickly loses much momentum.

I use a Hamer Special and a Crate VC-5115. She has a beautiful sound, very vintage.

OVERALL OPINION

I use it for 8 months. I really like reverb Hall, and not at all the Flerb. I do not use the Room, but only because I do not need it.

I tried different reverbs, and finds that it's really a very nice, not digital. It really breaks the momentum on the other hand.

Finally, I find it worth the price (bought new, just over 90 euro power supply).