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Multi-Effects for Acoustic Guitar

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Multi-Effects for Acoustic Guitar
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User reviews on Multi-Effect for Acoustic Guitar products

Zoom 504 II Acoustic (Zoom - 504II Acoustic)

By MGR/David, 25/12/2003
I got this unit as a Christmas present that I had askef for. I think my parents got it at a Daddy's Junky Music store for about $80. If you bought it online, shipping would make it about the same price.

I enjoy everything about this unit. I play a Seagull M6 Spruce that i have been extremely happy with. I like to fool around with some Tim Reynolds stuff and this unit combines the delay that Tim uses with a whole bunch of other effects including the 12 string guitar effect, reverb, and chorus along with many more. Everything sounds great.

One thing that i dont like about the unit is your inability to control the effect while your playing. You basically preset and cant control a whole lot while your playing. But, its just a very minor setback.

It seems real durable. Since its so small, it doesnt take up much room. Thefefore, its less apt to get damaged.

A very very nice unit for the money. Combines many effects into one package. I was debating between the Boss DD3 or this Zoom 504 II acoustic. And i'm glad i chose this!

This review was originally published on

Zoom A2 (Zoom - A2)

By MGR/Dave, 07/05/2009
The product is a multi-fx stomp box--replacing the old 504 unit in the product line-up. it has a footprint of about 9" x 9". It has four rotary knobs, 5 solenoid (soft-touch) buttons and two heavy contact foot switches for scrolling between patches.
The construction appears to be some type of anodized aluminum with a green finish.
I have been playing guitar for almost forty years. While I gigged some in my high school and college days 30-35 years ago, since then my playing has been more limited to special music at church and musical programs in nursing homes.

I purchased this from Sweetwater Sound to replace a Digitech multi-FX unit I was less than pleased with. I paid $100 for it. In shopping, I compared it with previous units I had owned from DigiTech, Alesis, and DOD. I also field compared it to similar units from Line 6, Behringer, and Boss.

First off, this unit is very easy to use in terms of editing and storing user patches. As with any Multi-FX unit, you will have to have some idea of what sounds you want to have stored. All in all, I had created 20 user-edited patches in about an hour.
A second major plus is that this unit has the capability of 6-band EQ. The best the other manufacturers can offer in this price range is 4-band EQ.
The sound is virtually noise-free. While it comes with a Noise reduction component, I have not noticed as much noise compared to Alesis and DigiTech units, which produce a lot of hiss.
The unit can be powered by either battery (4-AA cells) or AC. By using rechargeable L-Ion batteries, there is no need to be tied to a wall wart with the wimpy spaghetti cord again.
Finally, Zoom builds their units with an on/off switch--something only Boss does.

The negatives on this are relatively minor:
The first negative is that it has a single 1/4" TRS (stereo) output -- dual (L/R) 1/4" TS outputs would be better.
A second negative is that Zoom arranged the FX so that the reverse delay and tape echo FX are located in the Modulation FX cluster with phaser, flanger, chorus and tremolo instead of being located with the delay/reverb cluster. It would be better to move reverse delay and echo functions to the delay/reverb cluster so that they can be used in conjunction with the phase/flange/chorus FX (for some of those Beatlesque mid-60s psychedelic FX)

The construction appears to be very sturdy.
Except for the battery compartment cover, the top, back and bottom appear to be made of some type of anodized metal (probably aluminum. The sides appear to have some sort of rubberized coating on them.
The knobs for adjusting the settings/parameters are very sturdy as well.
The 1/4" inputs and outputs are anchored to the casing with reinforcing collars instead of being anchored internally to the circuit board.
The footswitches are heavy contact switches (like on MXR stomp boxes).

This has many other features I didn't examine because I don't use them--such as acoustic guitar modeling (11 different models). For what it offers that I do use, it was worth cost.

This review was originally published on

Some Brilliant Features Couple With Some Underwhelming Additions (Boss - AD-3)

By jefferyfreelance, 06/05/2015
I bought the AD-3 for a specific reason, and that was that I did not trust my band’s sound guy. We were starting to do acoustic gigs, and the sound of my guitar out of the mixing board was less than stellar. I did not want to get an amp since there was a lack of space, and the mixing board and speakers were taking up quite a bit of real estate. I knew that the way to take back control of my sound was going to be at my feet in the form of a pedal (so typical of me to think a pedal could solve a sonic problem).

There are plenty of acoustic preamp pedals out there, but I had very specific needs. I am not an acoustic player in the sense that I have a repertoire of sing-a-long songs, and other acoustic friendly material. My band simply takes our electric show, and with some minor changes plays it on acoustic. My needs at an acoustic show are different that your typical player, but the basics are the same. I am also playing in a band (two guitars, bass, and singer) which requires different sonic necessities. I initially thought about ripping into my electric pedalboard, and stealing an iStomp or two and reprogram them for a 3-band EQ and whatever else I thought I could use. Pulling pedals off my board just wasn’t the best way to go.

I was using a guitar with piezo pick-ups with very little onboard tonal controls- just a volume and tone knob. I needed something to expand my control, and the AD line of Boss acoustic preamps caught my eye. The AD-8 had more bells and whistles than I needed. I settled on the AD-3 since it had enough features for what I was looking for plus a couple of extras. It was designed to work with piezo pick-ups so it seemed like a no brainer to buy the pedal.

Building a pedalboard just for the acoustic shows was where I was heading with the AD-3 anchoring it. I am really impressed with some of the features of this pedal. The anti-feedback is brilliant, the controls are intuitive, and the battery saving measures are excellent. It has a long battery life, but I plugged it in during a live situation to try and take battery failure out of the equation (there is enough to worry about already). The AC adaptor is not included, and must be purchased separately.

The pedal is not without its problems, and those are the things that weigh it down. The reverb is not the best in my opinion, but is workable. The chorus is also workable, but not a stellar effect. Instead of a chorus I’d rather have a delay or a boost feature. I’m not the biggest fan of the chorus effect (I got my fill of it in the 80’s), and I only use it once or twice in a set. When I have a solo I need to cut through other instruments to be heard so I’d rather have a footswitch activated boost instead of chorus. The tone shaping is designed around use with a piezo pick-up, so keep that in mind when checking this pedal out.

Since buying the AD-3 I have upgraded my acoustic guitar to a Breedlove Pursuit Concert Ebony loaded with a Fishman ISYS pick-up. This upgrade in electronics has made the AD-3 obsolete in my live acoustic rig. It is too bulky to add to my electric rig for use with my piezo loaded Telecaster.

In conjunction with a piezo loaded guitar this is a great pedal, but it is not for everyone. Chorus and reverb are not necessarily the effects I would choose to go with an acoustic guitar. The anti-feedback is great, and works well without having to stop playing to take care of the issue. It is well designed, but has a very specific target audience that it can be used by.

News Multi-Effect for Acoustic Guitar

Fishman introduces a new guitar preamp

Published on 06/05/14
Tonedeq, Fishman’s new external preamp, features a bunch of effects to process your acoustic guitare signal.