Seymour Duncan SFX-03 TWIN TUBE CLASSIC Pedal

The Seymour Duncan Twin Tube Classic pedal emulates a high-quality tube preamp with a 100% vacuum tube signal path and true bypass circuitry. Featuring two 6021 dual-triode tubes, the Twin Tube Classic provides tone control knobs for Bass and Treble as well as Rhythm and Lead channels. Each channel has its own Volume and Gain knobs, and the Twin Tube Classic also features On/Bypass and Channel Select footswitches.

The combination of high-plate voltage and a 100% vacuum tube signal path enables the tubes to operate at their peak potential, delivering exceptional dynamic range. This setup ensures maximum gain and the smooth, rich tone characteristic of high-quality tube preamps. With two channels for versatile sonic options, and true bypass ensuring signal integrity when the pedal is off, it offers flexibility and fidelity. Quiet operation is guaranteed by a fully encapsulated toroidal transformer, while its heavy-duty steel chassis ensures durability for reliable performance on the road.

The SFX-03 is a two channel guitar preamp employing premium subminiature type 6021 vacuum tubes. The 6021 is manufactured to meet the stringent MIL-E-1 specification for reliability and is optimized to provide long service life under conditions of severe shock, vibration, high temperature, and high altitude. The tubes are configured with a high voltage power supply for maximum dynamic range. True bypass capabilities are provided to allow uncolored feed-through.

Features:

• 2-channel
• Two USA-made Phillips-Sylvania 6021 dual triode tubes
• High-plate voltage
• External dimensions: 7.50" X 6.62" X 1.96"
• Weight: 3.15 lbs.
• Gain before level compensation: Rhythm channel - 74dB, Lead channel - 98dB
• Gain after level compensation: Rhythm channel - 52dB, Lead channel - 76dB
• Nominal output level: Rhythm channel - 0.4 Vrms (-5dBu), Lead channel - 0.5 Vrms (-4dBu)
• Max. output level before clipping: 2 Vrms (+8dBu)
• THD @ 1 Volt RMS output: 3%
• Harmonic spectrum @ 1Vo: predominantly 2nd harmonic with minor amounts of 3rd harmonic @ > 20dB below.
• Noise @ output: Rhythm channel - < 1mV (< 3 dB hum content), Lead channel - < 8mV (< 3 dB hum content)
• Power consumption: 10.4 W