
KNUCKLEHEAD II SPECIFICATIONS
High-gain input impedance: 1 Megohm
Low-gain input impedance: 33k ohms
Output impedance: Selectable, 4 ohms, 8 ohms, or 16 ohms
Line output impedance: 330 ohms minimum
Total harmonic distortion: 5% or greater at rated power
Bandwidth: 40 Hz to 20kHz
Preamp tubes: Five 12AX7A
Output tubes: Four 6L6GC or EL-34
Tube voltage: 430 volts DC at Idle
Output power: 120 watts RMS into 4 ohms
Operating voltage: 115 volts AC or 230 volts AC (export model), 250 volts AC (U.K. and
Australia), or 100 volts AC (Japan only)
Footswitch functions: Channel switching, boost for Lead/Crunch Channel, Ninja Boost
Bias: 165 mA DC at idle, no signal (cathodes are in parallel) measured from Pin 8 to chassis
ground, no speaker load connected to speaker jack #1
Height: 10"
Width: 26.75"
Depth: 10"
Weight: 50 lbs
Cabinet material: 3/4"-thick Plywood
Cabinet thickness: 3/4"
Construction: Dadoed joints
Covering: 30-oz. vinyl
Cleaning of vinyl covering: Moist cloth, dishwashing liquid
Because we strive to build the highest-quality product, we reserve the right to change specifications of our
products without prior notice.
13310 Ralston Ave.,
Sylmar, CA 91342 USA
Phone: (818) 833-7066
Fax: (818) 833-9656
http://www.rivera.com
Knuckle
Head
II
®
PRESENCE
POWER STANDBY
FOCUS MASTER 2 BASS MIDDLE TREBLE GAIN 2 MASTER 1 TREBLE MIDDLE BASS GAIN 1
BOOST SWEET SCOOP BOOST SELECTNINJA NOTCH BRIGHT
INPUTS
LOW
GAIN
HIGH
GAIN
HANDCRAFTED BY
RIVERA RESEARCH & DEVELOPMENT SYLMAR, CA USA
PULLPULLPULLPULL
CLEAN/RHYTHM LEAD/CRUNCH
PULL PULL PULL PULL
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