Product Review: TC Helicon Play Acoustic

The TC Helicon "Play Acoustic combines all the things you need to make a live acoustic performance shine: lavish vocal sounds, perfect backing harmonies, best-selling guitar effects, and unique processing that makes your six-string sing – in perfect harmony with your voice." Sounds pretty amazing, doesn’t it? Some of those claims are even true, if only somewhat useable. Four years ago, I wrestled with the decision for a vocal and acoustic guitar performance rig I’d be using most often in jam sessions, local open mics, and recording.

After a lifetime as a techie, I wanted to work on other skills, mostly vocal and guitar performance. With that in mind, a big part of what I was looking for was ease of use because I didn’t want to be wasting my time fooling with bells and whistles when want I wanted to work on was my performance chops. Four years ago, I decided on the TC Helicon Perform-VG for its simplicity and versatility, knowing that the Perform series of products were all downscaled versions of the Play Acoustic, Play Electric, and VoiceLive devices. With the Perform-VG, I have many of the Play Acoustic features without much of the flexibility. That is the downside. The upside is that I was up and running almost instantly with the VG and wasted most of an afternoon trying to figure out how to adjust a vocal compressor and set the harmonies for the Play Acoustic.

A critical look at the back connector panel of the Play Acoustic illustrates two critical flaws of the Play Acoustic: 1) no guitar thru connector, 2) no vocal out signal path (both guitar and voice are stereo mixed to the two XLR output connectors. There is an “AUX” input, for bringing in external analog audio, a “Pedal” connector for either the Switch3 or Switch6 function selection foot switches, an 1/8” stereo headphone jack, and a mini-USB connector that supposedly supports "Stereo audio input and output via USB is also supported at 16 bit resolution with 44.1 or 48 kHz sample rate." I wrote “supposedly” regarding that USB recording function because there are mountains of reports on-line of users giving up on the Play Acoustic’s digital recording capability due to lousy driver support. That wasn’t going to be something I would care about, so it had no real effect on my opinion or this review.

As the YouTube research demonstrated, TC Helicon’s harmonizer is terrific and the Play Acoustic has an powerful and well-designed collection of harmony, chorus, reverb, and other effects for the voice channel. Many of the effects come from TC Electronic’s wonderful array of professional recording plugins and special effects devices. Only a portion of the Play Acoustic’s vocal harmony capability is available on the Perform-VG. The Perform-VG can, however, separate the vocal output from the guitar for both live performance mixing and recording purposes. I can’t even imagine what went through the designers’ heads when they decided that capability wasn’t necessary for the Play Acoustic.

I’m not much for spending time wrestling with layered menus, either on my cars or my electronic devices. I really hate throwback software; been there, lived that. We are in an age of powerful, user-intuitive and friendly software and there is no excuse for any piece of digital electronic hardware forcing users to program a device through a crappy interface. That is exactly what you will have to do with the Play Acoustic, though. This incredibly ancient looking (and performing) piece of software is TC Helicon’s VoiceSupport 2 software as it looks on both Mac and Windows 10 machines. The software is pretty much Windows Explorer or Apple Finder for a few TC Helicon products. For the rest, this is nothing more than the overly complicated, under-performing interface TC Helicon uses to deliver firmware updates. You can reorganize your patches, you can download patches from TC Helicon’s cloud, but you can not edit anything usful with VoiceSupport 2. None of this should be surprising, though. TC Helicon/Electronic was acquired by Behringer in 2015 and it is safe to assume nothing innovative will come from the TC products in the future. Behringer is as notorious as was Norlin for taking gold and smelting it into oxidized lead.

So, for me, as powerful and interesting as the Play Acoustic is, it just isn’t worth the programming hassle. I messed with it for a day and sent it back to Sweetwater. For now, I’m fine with my Perform-VG until Zoom, Line6, Yamaha, Roland/Boss, or some other competent company comes up with a significant improvement. If you like fiddling with firmware more than playing, the Play Acoustic might be exactly what you are looking for, though. It has a lot of features, sounds great, and is a durable package (except for the notoriously fragile scroll wheel) that could give years of service. Of course, you’ll spend half of those years trying to tweek the thing into something you like using.

Making Your Own TC Helicon Perform and Play Acoustic 3 and 6 Switch Pedal Boxes

 Just for laughs, I decided to make my own version of the TC Helicon Switch 3 and Switch 6. First, because I'm cheap and have the "spare time" to do the research and assembly work and, second, because I wanted to fool around with "swirl painting."So, I did. 

What you see in these picture at left is the result. To highlight how cheap I really am, the 6-switch unit was made with the cover of  a gas water heater I had to replace this past winter. I made a nice looking wooden base for it, but you can only see the wood base when you are holding the switch box. The wood does add a decent amount of mass to the assembly, though, which helps to hold it in place on the floor. 

The 3-switch unit is a pretty simple and obvious device, except for the 3rd switch. As you can see from the schematic at right, the first two switches connect from ground/common to the ring or tip connector of the TRS jack. The third switch connects to both tip and ring through a pair of diodes (pay attention to the correct polarity) and to ground/common. It's not complicated wiring and the parts are cheap. 

I bought a pile (10) of cheap SPST momentary switches from Amazon and used them on both switch boxes. After almost a year of use, they are still working well. They are cheap plastic and I'm sure ham-footed use would break them and if you dawdle with the soldering iron you'll likely melt the plastic holding the solder tab. The switches must be momentary. If they aren't, you'll have to press the switch twice for each change action. That is NOT handy.

The six-switch unit is a little trickier than the three switch unit and requires some planning and assembly skills. Not many, though. Along with the  six SPST momentary switches, you'll need another TRS jack and seven 10k ohm resistors (anything, wattage-wise, will work). You can see I staggered my switches, mostly because I did not want a long switch box and because my TC Helicon PerformVG only has four harmony combinations that I am likely to use, so the two offset switches are for voice echo and guitar echo, which I almost never use. 
 
 I've included a second drawing for the six-switch unit, in case that layout makes more sense to you. They look different, but they are exactly the same circuit. The drawing at right might more resemble the physical layout of your assembly, which might make error-free assembly easier. I should note that I did not create any of the drawings included in this blog. I snagged them off of the internet, like you probably did when you found this essay. I should go back and find my sources, but that was about a year ago and I'm lazy. So, I didn't draw them, I apologize for not giving full credit where credit is due, and I used them and they work. In fact, the 3-switch unit works incredibly well on my Roland Cube Bass, too.

This is what my performance rig looks like, including a Bluetooth page-turner footswitch, a cheap Android 10" tablet for lyrics and chords, the TC Helicon PerformVG voice and guitar processor, and my trusty and beloved EV RE18 microphone. That and a powered speaker and I'm a louder-than-I-should-be busker or coffee house performer (should I ever want to be such a thing). With a set of in-ears, I can entertain myself for hours.