Fortin Amplification SIGIL User manual

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SIGIL 20W TUBE AMPLIFIER
The SIGIL conjures up magical arrays of clean, to high-gain tones in a compact,
portable, road-ready format. Channel one assigns GAIN 1 and MASTER 1 with a
shared eq and includes 3 stages of gain with a push/pull gain boost that
restructures the amp to provide everything from bright, shimmering cleans, to
heavy gain pushed tones. Channel 1 loves boost and overdrive pedals for further
tonal explorations. Channel 2 assigns GAIN 2 and MASTER 2 with a shared eq
with a total of 4 gain stages that can be dialed from punishing, face-punching
attack to over-the-top levels of gain insanity while still retaining clarity. The
Standby switch offers a HIGH power selection for the full 20W, center position
for standby, and LOW power selection for 6W that variacs the power amp to
give the SIGIL a different feel and attack. The tube driven FX LOOP is instrument
level ready for stomp boxes or rack effects.!
Summon your legions – SIGIL

SIGIL front panel overview (left to right)
INPUT: Where you connect your instrument.!
GAIN 1 w/pull boost: Sets the input gain for channel 1 that assigns GAIN 1 and
MASTER 1 with a shared eq and includes 3 stages of gain with a push/pull gain boost
that restructures the amp to provide everything from bright, shimmering cleans, to
heavy gain pushed tones.!
CHANNEL: Selects Channel 1 or Channel 2 with red LED indication. Footswitch
inserted into the rear jack overrides the front panel channel switch.!
GAIN 2: Sets the input gain for channel 2 that assigns GAIN 2 and MASTER 2 with a
shared eq and kicks in 4 gain stages that can be dialed from punishing, face-melting
attack to over-the-top levels of gain insanity while still retaining clarity.!
BASS: Passive interactive low frequency equalization for all channels.!
MIDDLE: Passive interactive midrange frequency equalization for all channels.!
TREBLE: Passive interactive high frequency equalization for all channels.!
PRESENCE: Power amp control of high frequency variable feedback.!
MASTER 1: Post FX LOOP volume for GAIN 1 channel.!
MASTER 2: Post FX LOOP volume for GAIN 2 channel.!
SIGIL INDICATOR: Sigil lights up when power applied.!
STANDBY: STANDBY = Center (power tubes only)/HIGH = UP for 20watts/LOW =
Down for 6watts!

SIGIL rear panel overview (left to right)
MAINS and POWER SWITCH: Input to connect wall power and turn on power.!
VOLTAGE: Switchable between 115VAC and 230VAC operation. !
MAINS FUSE: T1A fuse for 115VAC, T500mA fuse for 230VAC. !
HT FUSE: T250mA fuse for high voltage. !
BIAS ADJUST: Factory set to 22mV per tube. Refer to a qualified service tech. !
SPEAKER OUTPUTS: Jacks to connect your speaker cabinet to, 16 or 8ohms.!
FOOTSWITCH: Connect 1/4” footswitch to remotely switch between Channel 1 and
Channel 2. Tip to ground switching. Footswitch inserted into jack overrides the front
panel channel switch.!
SEND: Series tube effects loop send, instrument level. !
RETURN: Series tube effects loop return.!
SPECIFICATIONS:#
2 foot switchable channels#
Series all tube loop, pedal ready#
External bias controls and test points#
HIGH = 20W, LOW = 6W #
MAINS select 115VAC/230VAC#
4-12AX7, 2-6V6!
Product dimensions:#
W 15in x H 7.75in x D 8in (includes handle, feet, knobs)#
W 381mm x H 197mm x D 203mm (includes handle, feet, knobs)#
Shipping dimensions:#
23.6in x 12.2in x 12.2in @26lbs#
600mm x 310mm x 310mm @12kg#
Made in the UK!