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Source Audio Soundblox Guitar Envelope Filter
Summary: Nice, moderate vowel-tone envelope filter box for guitar. You can get downright funky with this pedal. While it may not get as “vowelly” as competitive products, it certainly has a lot of tone on tap. Pros: Great features and tone, and the pedal’s super quite when active. The controls are super-easy to manipulate. Cons: While I love the sound of this pedal, its physical footprint is just plain big, making it impractical to put on my pedal board. Also, the plastic enclosure makes me a little “iffy” about its gig-worthiness. Features
Price: ~$120 Street Tone Bone Score: 4.75 ~ On tone alone, I’d give this a 5, but its size and plastic enclosure give it a lower mark. |
A few months ago, I was thinking that the next tonal territory I wanted to tackle was using an envelope filter. I love that “auto-wah,” vowel tone. I’ve tried out a few over the months, but I got a chance to spend a good deal of time with the Source Audio unit in my studio, and I have to say that tonally, it’s a real winner for me.
Out of the different envelope filters I’ve tried, this one has just about the most features I’ve seen to date, with 21 filter sounds, which means you can get A LOT of different tones out this box. But despite the amount of tweakability, it’s super-easy to dial in tones, and to be completely honest, though I’ve had this unit for a couple of months to play with (thank you Source Audio – and no, this is just demo unit, though I’ll probably buy it), I have yet to touch the manual. Source Audio even sent me a wired “Hot Hand” controller that allows you to manipulate the signal with a ring that’s wired to the pedal. But I haven’t used it yet – the Hot Hand-less configuration has just worked for me.
There are only a couple of things that really irked me about the pedal. The first, and this goes for all Soundblox pedals in general is its large footprint. For me to use it at gigs with my pedal board, I’ve had to remove my wah pedal. It’s 7″ long, for goodness’ sake! Plus the plastic enclosure makes me a little nervous. I gig a lot, and I’m not sure just how well this would hold up getting banged around in my car.
But despite those little annoyances, I still dig the pedal – A LOT. For one, it’s insanely priced at around $120 street. Plus, it’s dead quiet on or off due to the analog true bypass switch, which is a great feature for a lower-price-point pedal.
How It Sounds
Of course, its sound is what sold me. But it’s even more than that because the pedal also reacts to input gain. So in addition to getting the 21 different voicings, by adjusting your input volume and pick attack, you can affect the tone of the pedal. I’ve literally spent hours playing around with this pedal, and every time I play it, I discover something new. Love it!
The following clips were all played with my Fender American Deluxe Strat into my trusty Roland Cube 60, set to a clean “Blackface” setting. I didn’t want to color the tone with any kind of drive or distortion. Note that I don’t remember any of the settings that I used on the pedal. In fact, when I recorded these, I just set the pedal to what I though would sound good, then hit “record.” 🙂
First off, is a little ditty that I put together with a clean rhythm track, and doing a lead over it.
Second is another lead track, but I added in some reverb and delay to give the tone some space.
Next, it’s just my guitar and the pedal. The first part of the clip demonstrates the pedal’s response to pick attack. Then I just play a random lead and some fast funk chords.
Finally, I set the pedal to extremes. I was after the most raunchy tone that the pedal can produce without going over the top (which it can), and this is the result:
Overall Impression
This is a fantastic pedal! Even with the misgivings I have with its size and construction, there’s no denying that the tone it produces really moves me.
Guitar Gear 
