SFX-04 Twin Tube Mayhem Review

manufacturer: Seymour Duncan date: 07/10/2008 category: Guitar Effects
Seymour Duncan: SFX-04 Twin Tube Mayhem
Seymour Duncan's SFX-04 Twin Tube Mayhem performs double-duty as a high-quality guitar preamp and stellar tube-driven overdrive. Take your tone to new sonic heights with the SFX-04.
 Sound: 9
 Overall Impression: 9
 Reliability & Durability: 8
 Ease of Use: 7
 Overall rating:
 Reviewer rating:
 Users rating:
review (1) 6 comments vote for this gear:
overall: 8.3
SFX-04 Twin Tube Mayhem Reviewed by: Shredder993254, on july 10, 2008
3 of 3 people found this review helpful

Price paid: $ 229

Purchased from: Proguitarshop.com

Ease of Use: Right off the bat, this new pedal from Seymour Duncan looks ready to shred. It's as simple to use as 1 2 3. Off is your clean sound. On is your classic rock-metal sound. On with 2 different boosts gives you a solo sound. This is a top-of-the-line product made to last with your simple bass, mid, treble, gain, and volume knobs. On the more fancy side, when you get used to those settings, you have a switch for high and low hz. // 7

Sound: This is a distortion pedal, and it really can gain up your amp to the moon and back. If you own a cheaper amp that has weak distortion, then this pedal will make it sound like never before. I have used many distortion pedals before, and this is the best by far. Sounds great on a mid gain, range setting, and a high gain range. With the boost Switch, you can get 4 or 8 dbs of power added to the original amount of gain you added on. Sounds great on 4db, a solo setting, and insane sustain and deepness of distortion on the 8db setting. Like I said, you can get any amount of gain you want from this pedal, because it is so versitile. The high plate voltage and 100% vacuum tube signal path allow the tubes to operate at their fullest potential and provide maximum dynamic range. The only bad flaw on this pedal is that you can not use just the gain boost without the other side of the pedal on. On the bright side, it has fully encapsulated toroidal transformer for a quiet no-hum or buzz, for recording and before the concert. // 9

Reliability & Durability: This pedal screams to high heaven, and because it is a Seymour Duncan, it is very reliable. I would definintly use this on a gig! It has modified tubes, a duet of premium, mil-spec, subminiature, USA-made Phillips-Sylvania 62051 pentode tubes, so that you will basicly never need to change them your entire life. So you can do a years worth of gigs without changing the tubes and not even worry about it! it's made of a steel chasis so if you drop it, it should be no problem. // 8

Overall Impression: Overall impression: very satisfied! I love the great graphics on the pedal, and the sound range you can get from this pedal. This is the one tube pedal to rule them all! If it were stolen or lost, I would definitly buy this pedal again. I love the versitilty of it, of how in one stomp you go from classic rock to crazy solo. My favorite feature is the boost, and I like it on 4dbs, becasue it's just enough to really crunch if you have the gain on medium on a classic rock solo. I compared it to the Boss-DS1 and the distortion out of a Line 6 Spider III amp, and this is the most versitile. I wish this pedal had a few brothers and sisters by Seymour Duncan for other effects like chorus, where I can get the same versitility and tone quality. // 9

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