This unit is absolutely Amazing. The spring reverb is so true! I was tempted to open it and see if there was a real spring in there, but I didn't want to void my warranty, even if this durable unit did fail. Electro-Harmonix products don't need a review. These boys do it right everytime.

Sounds great when it works. I had to unplug it and plug it back in again and again to get it to work. These pedals seem to be hit or miss. Quality control is not very good with these pedals. I stayed away from the original Holy Grail because of all the bad reviews. I went with the more expensive Holy Grail Plus but it seems to have the same problems. I am sending it back to try another one. If the new one is bad too, I will not be trying a third.

A rig without reverb is pretty sterile and lifeless to me, and this pedal is exceptional and sounds very natural. I went with this model of the Holy Grail because of the blend and amount adjustments. There's so much more control over the output. I use the spring setting pretty much all the time, although the hall is very lush. The flerb is quite weird but interesting, but I don't think there's a real practacle place for me to use it quite yet. There's a lot of fun to be had playing around with just the full wet signal on the hall and flerb settings. It works well and sounds awesome with my #1 Echo in front of it. Seems tough and reliable. It doesn't seem to alter the tone and there's no added noise to speak of. I only knocked it down a point because it's sorta spendy.

O.K. I guess I'll be the first to review the Holy Grail Plus since no body chose to do so. This should answer any questions that you might have about the HG+. I own both the HG and HG+ and will give you my honest opinion of both. The HG+ trumps the original Holy Grail. The HG+ has the same lush, natural tone as the HG, but goes a step further. It gives you the ability to control both the amount of reverb(length), and how much of the effect you want mixed with your dry signal. The HG only has one knob to control the level and length of the effect. I run my reverb pedal through the effects loop. I found that I could only use a tiny fraction of the reverb, almost to the point where the effect was practically non existent. Using larger amounts would muddy my tone. Not what I want from a reverb pedal. The HG+ allowed me to increase the amount of reverb to my taste and blend that signal to my dry signal without degrading my tone. It's just what I've been looking for. Now I have that great reverb tone that I got from the HG without it washing out my tone. Another advantage, the HG+ has a lower profile which makes navigating around the pedal board much easier. The casing seems to be more durable as well. If you are looking for an easy to use reverb pedal that is flexible and sounds great, the HG+ is for you.

I already have the Holy Grail, and it's the best reverb I've ever used. The only problem I have with it is that, the similar styled Small Stone, it tends to cut the volume level of your amp. I was building a separate pedalboard for my AC-30, and was looking at different reverbs when I saw this. I basically just use the hall reverb, and for the most part, I tend to leave my control knobs at the halfway point on all of my effect settings. It's nice to have some more variables though. This pedal is built sturdier than it's sibling, and takes a standard 1/4" input jack.