With the SFX-11 Twin Tube Blue Pedal

Santa Barbara, California -  The SFX-11 Twin Tube Blue, the newest pedal from Seymour Duncan, is the perfect pedal for the no-compromise blues player. You know the type. They have to have the best tone possible and they'll spend any amount of money to get it. Fortunately, this boutique quality "secret weapon" pedal won't break the bank.

Like its cousins the Twin Tube Classic and Twin Tube Mayhem, the Twin Tube Blue is a high-quality, two-channel, guitar preamp. However, this one is voiced for the blues. We're talking modern blues, Chicago blues, Texas blues, and classic rock.

Unlike its Twin Tube brethren, the SFX-11 features a duet of premium, subminiature, USA-made Phillips-Sylvania 6111 dual triode tubes. These tubes are voiced similar to a familiar 12AU7 and represent the pinnacle of tube technology. They were designed and manufactured to meet the U.S. Government's MIL-E-1 spec for reliability under conditions of severe shock, vibration, and temperature. They provide extremely long service life and exhibit virtually no tendency toward microphonics.

Speaking of tubes, too often, inexpensive tube gear runs in "starved plate mode," where the tubes function like clipping diodes and do not actually amplify. The Twin Tube Blue's high-plate voltage and 100% vacuum tube signal path allows the tubes to operate at their fullest potential and provide maximum dynamic range. That means you get the most gain and all the smooth, bluesy tone you expect from a high-quality tube preamp.

Two channels provide versatility. The Rhythm channel offers up sparkly chords and bright and punchy leads. The Lead channel starts with familiar Texas blues and goes all the way to the heaviest blues tones you'll ever need. The Twin Tube Blue is true bypass and features a heavy duty chassis and a fully encapsulated toroidal transformer for quiet operation. A 16-volt AC transformer is also included.

Technical Specifications:
Gain:
Before level compensation
- Rhythm channel - 66dB
- Lead channel - 88dB
After level compensation
- Rhythm channel - 53dB
- Lead channel - 74dB
Nominal output level:
- Rhythm channel - 0.3 Vrms (-8dBu)
- Lead channel - 1.2 Vrms (+4dBu)
Max. output level before clipping:
- 3 Vrms (+12dBu)
THD @ 1 Volt RMS output - 1.6%
Harmonic spectrum @ 1 V out - predominantly 2nd harmonic
Noise @ output:
- Rhythm channel - < 3 mV (< 3 dB hum content)
- Lead channel - < 20 mV (< 3 dB hum content)
Dimensions: 7.50 X 6.62 X 1.96 in. (190 X 168 X 50 mm)
Weight: 3.15 lbs. (1.43KG)