Electro-Harmonix Holy Grail Plus
Electro-Harmonix Holy Grail Plus

Holy Grail Plus, Reverb for Guitar from Electro-Harmonix in the Holy Grail series.

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All user reviews for the Electro-Harmonix Holy Grail Plus

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Average Score:4.7( 4.7/5 based on 10 reviews )
 8 reviews80 %
 1 user review10 %
 1 user review10 %
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iamqman's review"Holy Grail"

Electro-Harmonix Holy Grail Plus
Electra harmonics is really known for their great sounding effects pedals and especially the Big Muff fuzz distortion pedal. They really use a large box to put their effects pedals inside which to some people uses a lot of room on the pedal board. This is one of those padels that uses quite a bit of space for only with a single effect. This padel does sound quite fantastic if you can get past the large and bulky size of the unit. It is a cool sounding pedal and it has the features laid within it to get anyone to write for you for the tone that they are looking for.


Electro-Harmonix Holy Grail Plus Reverb Pedal Features:

Realistic spring, hall, and room reverbs
Control over damping, reverb time, and modulation speed
Blend, Amount, and Reverb type knobs
Compact, rugged metal housing


This pedal has three control knobs cooperation. First you have a blend knob which mixes the effect signal with the drive signal then you have an amount control which gives you to overall exact sound in volume. Then you have any reverb switch that gives you three modes of operation including spring, hall, and room reverb tones. These paddles do you sound fantastic and at the price point they are a must-have in my opinion. There is really so many tones available for this pedal even though it is a simple reverb pedal. It is a classic sound that has a load of tones and features that make it a go to pedal for the gigging guitarist.


At new you can find these pedals for right around $145. That's a pretty good price for a great sounding pedal I will last you a lifetime of great tone and effect. Electro harmonics is one of those companies that continues to build sounding units right here in the United States and has a reputation for quality and sound. This is one of those petals that sounds great and at the price point it is a must-have.

moosers's review

Electro-Harmonix Holy Grail Plus
The Electro Harmonix Holy Grail Plus is an analog reverb pedal that is similar to the original Holy Grail reverb pedal.  This pedal has 1/4 inch connections and I powered it with the specific Electro Harmonix power supply and I don't know if it can be powered with another 9 volt power supply as I have no tried.  This isn't a rack mountable piece of gear as it is a stomp box.


The configuration of the Electro Harmonix Holy Grail Plus is pretty easy to follow overall as it simply has three parameters.  It has knobs for blend, amount, and mode, which you can choose from spring, hall, and room type reverbs.  This is slightly different from the original Holy Grail pedal and allows you to get some slightly different sounding reverbs, although I believe that only one of the modes is different.  As you can see, with only three knobs this pedal is very easy to use and for this reason a manual isn't a necessity.


The sounds that are possible with the Electro Harmonix Holy Grail Plus are pretty great overall.  I like all three of the modes as it allows me to get some contrasting reverb sounds within one place.  While I do wish that there were more modes as I am always a fan of versatility, you can still get a good amount of different sounds.  I usually use the pedal with a '76 Fender Twin Reverb and a Fender Strat, so I'm getting a pretty good idea of what this pedal actually sounds like.  While the spring reverb on the pedal is probably the best of the three modes, it still doesn't compare to the spring reverb I have on my Twin Reverb, but is still realistic and very useful for live shows or recording./


I've been using the Electro Harmonix Holy Grail Plus for about six months and it is definitely a nice sounding reverb pedal.  While this wouldn't be my first choice for a reverb pedal, when I have access to it at the studio I work at I will definitely dabble with it as you can get some cool and interesting tones.  It is pretty similar to the original Holy Grail, and its hard for me to say if one is better or worse, they are just slightly different in make up and the tones that you can get.  The price is definitely reasonable and you know you're getting top quality from Electro Harmonix.  If you are looking for a nice reverb pedal, definitely check out the Electro Harmonix Holy Grail Plus.

hen's review (This content has been automatically translated from French)" Effective"

Electro-Harmonix Holy Grail Plus
4 modes:
- Spring
- Hall
- Room
- Flerb



Made by EH so simple and often effective.

Manuel???'s For EH???

Just to clarify for those who love :-) Pedalboards adapter is provided, but it's 9.6! So if you plug a 9V AC power supply in general will blow (logic) with a very sharp unpleasant noise (even with a noise gate). So we are left with one more charger to plug and carry around.
Not too practical when you think a config with several general alim (9V, 12V, 18V) to just not have a single charger.


If you want a reverb amp is kind to you. I plug in the ORANGE, and I use a strat-type guitar DUPONT.
I use all modes. The flerb I found gadget at the beginning eventually serve me and not make trouble in the end.

Last 12H knobs on it starts blowing. If you are fans of this invasive reverb pedal is not for you.

The sound is warm. Does not distort the sound.
I often had problems in EH breath. Here it is correct, with a Noise Gate is perfect.


I use it for about 1 year. I have always used reverb amps above (Marshmal, fender) and as there was none on the ORANGE ...

I find it a bit expensive anyway, but I use it a lot, so we can say that the cushioning.

I would do this choice because it is what I need: reverb amp discrette and effective.

Q.Allcool's review (This content has been automatically translated from French)" Excellent reverb!"

Electro-Harmonix Holy Grail Plus
This is a reverb pedal well known, and it deserves its fame! Four types of effects on the Holy Grail +:

-Spring (classic reverb, which is found on most tube amps)
Hall (imitation of the reverberation of a large room, like a church)
Room-(imitation of the reverberation of a small room)
-Flerb (accumulation of flanger and reverb, effect psyche well!)

Presence of true bypass of course, and comes with a 9V supply. In addition to the on / off switch pedal has a button amount (effect size), a blend knob (reverb time), and a button to select the effect you choose among the four.


Using fairly simple, but it will take some time to find a good setup that works for both the lead channel and clean channel. The manual could not be more basic in English, he explains briefly the role of different knobs.


I use this pedal with an Epiphone Les Paul Std + on a Peavey ValveKing 212, mainly for the large rock and progressive rock.

The effects are very good, very good quality especially the reverb effect "hall" which gives a huge scope to the sound. Indeed essential, among others, to play solos planing to Pink Floyd for example. The effect is very interesting and flerb to explore sounds rather strange.


I use it for a few weeks only for solo play, this pedal is really an excellent reverb. The price / quality ratio is normal, for € 130 you have a standard of what kind of effect.

.Gwe's review (This content has been automatically translated from French)

Electro-Harmonix Holy Grail Plus
Here we have a reverb pedal format, it could not be more simple: one in, one out, a base for 9v power supply (Boss type, no worries with my Dunlop DC Brick).
So: no editing Mac / PC, not rack (pedalboard but not small either).
It has four models of digital reverbs:
- Spring: imitation of spring reverb (at the bottom of these tanks amps)
- Room: reflection of an average room
- Hall reverb to love you where to play
- Flerb: Set sparingly, it is a reverb with a big flanger type modulation

The look is sober in his classic brushed aluminum case of EHX.


The configuration is too simple for my taste: for the price of the software are 15x better obviously, but hey it's true it's not the same thing ...

I do not know what looks like the manual and if there is one, but there only to turn the pots according to these parameters:
- Blend: from left to right we are going from wet to dry (clean to the effect of what)
- Amount: this rule roughly the length of the reverb tail
- The type of reverb (four positions rotary switch, not a potentiometer)


I use it with guitar and keyboards, and I think it sounds good, it does its job well enough reverb with what she is capable.

That said, the number of parameters is really too small for my taste, and very narrow range of sounds ... Two parameter to edit the reverberation of a space is too little for me.
And personally I think they sound all too spring reverb, you do not really feel the environment you want, the illusion sound is not as complete as with the plug ins that I used.
That said, if it is destined to go to an amp, enough to enrich the sound.

What hurts me the most is the lack of predealy!

The flerb is very special, once again, it's a very static, which does not offer much opportunity and does not dazzle with its beauty. I love the weird sounds and tweaking tons of wacky stuff, but here's a little thing like limit. Blend with the little push that can enrich the sound a certain way.


I use it for 6 months roughly, and it is true that the sound comes out what is hot enough and enhanced / embellished sounds. It is obviously much better than the icy reverb of a multi purpose zoom (compared with the G2 in support) or that of my old integrated amp (Peavey Vypyr 15, we all have a difficult past, right?), But Today virtually all software reverbs I tested are much better (and allow more settings, I tested it in Garage Band, Logic, NI, IK Multimedia ...).

So to be quick, to the blessed who will not read all these opinions, here is the long awaited "the most and least"!

(+) Format pedal for those who loves (though a little big)
(+) Construction: no surprises, so good: true bypass, resistant, LED status, power supply 9v
(+) Good sound overall, used to thicken and embellish his sound and sound quality is frankly that we can go.
(+) Settings childish ...

(-) ... that reduce the sound palette
(-) Very limited edition (no pre delay!)
(-) Nothing new: No usb, no stereo, no MIDI sync ... Although this is a reverb, we find nothing revolutionary.

I think the value for money is not that bad, I would advise a good opportunity, especially that they have aged very well, but nine price levels I do not think it's worth it!

cedart's review (This content has been automatically translated from French)" Simple and effective"

Electro-Harmonix Holy Grail Plus
4 different reverb program: Spring, Room, Hall and flerb for the latter mode it is an effect on the crossroads between a flanger, reverb and tremolo sounds giving quite amazing ... .
Editing is done via the three large button on the front, no connection with a computer possible, the connection is rudimentary: Jack 2 6.35 (in and out), a connection to a power supply included (9V).
An activation switch.


Configuration is very simple, the manual is clear enough to see almost pointless in the simplicity of the controls.


The effect is certainly not to the height of a vintage spring reverb but quite adequate and effective.
I use it mainly with a Gibson Les Paul plugged into a Bassman head 100 (which does not have reverb built) the holy grail does its job of giving more scope to the sound, I like to pair a fuzz probe, sound Space is so devastating to both .... My preferred setting is the Hall reverb with a blend and amount to 12 am ....


I use it for 2 years and this is my first pedal reverb, I've never been disappointed with the sound produced, and I never try to try another.
Its good points are: the sound quality and simplicity of implementation, for a price / quality ratio very good.
I would do without hesitation that choice ...

Ptosh's review (This content has been automatically translated from French)" !!!**"

Electro-Harmonix Holy Grail Plus
4 types of reverb


2 knobs for adjusting the depth and speed of the effect
1 selector
9v power supply connection
(No housing for battery)


Settings simple, the pedal raisonnable.légère size and robust.
sufficient manual
simple adjustment, equalization very efficient and sensitive


Reverb quality and very good bypass!
no noise, very transparent pedal, the dynamics of the instrument is intact and sound of the amp is "inviolate"!

I use it on a head tube amp 15w type fender (Teutates shop https://static.audiofanzine.com/images/audiofanzine/interface/smileys/icon_wink.gif) with a fender 60 between another PC ...

while at the quality of the reverb nothing to say is "clean" ... and the settings are appropriate.

However small the least is that if you push the knobs too far you lose momentum and the signal. personally it does not bother me because I want to give just a little depth to my sound, I do not like the effects too far.

flerb mode is when its really ugly .... therefore unnecessary for me


very happy

frankly I have not tried good quality reverb (to lamp) before or even direct competitors (RV-5, Verbzilla, digiverb ...), only reverbs pre amp or pedals multi .. . Not surprisingly, it's much better.

I just traveled many forums about the reverbs and did according to my means and my level. In this connection the Q / P is excellent on puisqu'acheter dv247 for 103 euros https://static.audiofanzine.com/images/audiofanzine/interface/smileys/icon_smile.gif I think for this quality reverb is very interraissant

I put so 9 in all and this is probably not the Grail reverb but I is nothing against him, not very expensive and the effect is very convincing I therefore strongly recommended.

** Beware, if you order from dv247 is a power supply socket. English

Anonymous 's review (This content has been automatically translated from French)

Electro-Harmonix Holy Grail Plus
This is a reverb pedal.
On one side the guitar, the other with the amp in the middle a power supply with the beast


I amp without reverb, so I had to pedal.
I searched the net a lot and I followed the advice I found here notament.
The record may be clear, I do not remember if there one. We do not really need instructions Paour this pedal.
Once again, you turn the knobs, we listen, we find


The effect is excelente. It is exactly what we asked.
Flerb mode is strange and must be quite complicated to put it but I think I found very funny. The other modes are more "known" and make it very well.
I second flight with a Blackheart BH15-112, a Schecter Diamond Series Blackjack or an old Epiphone with micro Iommi signature.


I have since last October. As I say, I foolishly followed the advice I found here and elsewhere and I'm happy.
It is practical, efficient, but certainly a bit pricey.
For me, value for money was unbeatable: I have been offered.
I will ever be the same choice. It is exactly what I asked him what for me is essential.
(I never put 10 because perfection is not of this world)
John Michael10/14/2008

John Michael's review (This content has been automatically translated from French)

Electro-Harmonix Holy Grail Plus
Spring, Hall, Room and Flerb
All-aluminum bodywork, robust, efficient.
Connectors play: INPUT / AMP and Alim 9V (included)


You have a head amp with no reverb?
Yeah, the class of scne or group, you do not feel the difference.
But the training at home or recording, still missing a little something to make up the sound too dull.
That something must be simple and effective, it is not to take the head with a Game Boy, but to play an instrument. And especially the sound and dynamics must be prservs, remain the same, but with reverb.
+ The Holy Grail is a nothing that has, and does so perfectly.
You plug the 3 son (even no place for a cell of any one fawn curse at one time or another) one dose lgrement ... and the fact. A manual? What for? a means, and it's good!


The effects are what is expected of them: a convaicante Spring, who is a Hall, Room a good guy, and yes, that is the only Flerb to look pretty on the case.
Start with a SG, a jazz guitar, you can always find happiness, as on any amp with a good traditional reverb. Shadows of Joe Pass, anything goes within reason.
Obviously, when pummeled with a little saturation, the Reverb "upstream" is not quite the same CHARACTERISTICS Reverb that would be applied to the APRS pramplification. But first, it's not his fault, it is the o can be put. I think with one of distortion pedals should be placed in the position deuxime (vrifier. .. I have no distortion pedals from) APRS. If we use the saturation of the amplifier is a little less empty, but it's all about dosage, and in most cases it does well.


Well, has only a few days, but she missed so much! My little head (amp) in this case an Orange Tiny Terror, which feeds a 12 "Celestion revle finally all his wealth sound.
For the sake (of misguided economists, I pass by a cell before the first price, a home RV600 Beh ... ger, who almost got dgoter the pedals of all time effect: Casing in soft plasticky and thin (nice underfoot!) Economic power supply so that it worked at least 3 seconds before melting ... In short, a toy dummy almost half the price of real . Fortunately trssrieux Euroguitar Lille did not let me in this galre, I could put my rcuprer and buy a real effect: the Holy Grail Plus!
This effect is pro, effectively, without artifice. The words Made in NYC, United is there for something. Obviously, I would do the same purchase.

Anonymous 's review (This content has been automatically translated from French)

Electro-Harmonix Holy Grail Plus
Several different reverb:
Spring, Hall, Room, Flerb.

Digital pedal with true bypass.


It is very easy to use. The pedal has 3 knobs and a button On-Off.
Bend the knobs first, the second and third Amount to choose the type of reverb you want.
Bend the knob can change the intensity of the effect, Amount, the amount. It is not clear but it includes ca very quickly once you buy it.

To find his sound, one can look far because the possibilities are very many thanks to the 3 knobs.

The manual is useless, so it's not hard to understand that I did not even open yet again.


It's great, the sound of the guitar is respected. Even if the effect is digital, the guitar remains the same but with more reverb. The reverbs are very effective, quality is very good.


I only yesterday because Santa Claus brought it to me ^ ^ and it is GREAT!!
I play on my amp Fender Acoustasonic 80 watts on my guitar electro-acoustic so obviously it makes it good. It's always a good amp: D

The value for money, ba I think it's good because I paid € 140 and the result is impressive.

I bought it without testing it but I would do the same choice if needed!

PS: I think we can find it cheaper than € 140. Just negotiate in-store ... https://static.audiofanzine.com/images/audiofanzine/interface/smileys/icon_smile.gif