83 400R
The model 83 400R is a versatile amplifier suitable for rock, blues, metal and fusion, with advanced controls to shape the sound:
- Functions Hi Boost, Lo Cut And Mid Contour by tonal definition
- Separate controls on low, medium and high frequencies
- Ideal for guitars with single coil or humbucker pickups
The combination of EQ and gain allows you to go from defined clean sounds to aggressive distortions.
Controls
- Y → emphasizes high frequencies
- N → softer and more natural sound
- Y → reduces low frequencies, more definition
- N → fuller and fuller bass
- Y → scooped / attenuated mids
- N → full and present mids
Useful for adapting the sound to the mix
Control the high frequencies: brilliance and attack
- Adjust the lower mids → body and definition
Adjusts the upper part of the mids: presence and incisiveness
Control the low frequencies: depth and punch
- Y → reduces gain by 10 d
B, cleaner
- N → full gain, more distortion
Channel Output Level:
- Adjusts the overall boost
- Adds extra gain or push → useful for solos or powerful riffs
Controls the final volume:
- Negative → attenuation 0 d
- B → neutral
- Positive → boost Does not alter the timbre
Pro Tips
BEHAVIOR OF THE AMPLIFIER
- Defined and versatile sound
- Hi Boost, Lo Cut and Mid Contour controls for shaping your tone
- Adjustable gain to go from clean to distorted
- Volume and Boost allow dynamics and thrust
Advice:
- Hi Boost + High Treble → bright and punchy sound
- Lo Cut + Moderate Bass → definition without dough
- Mid Contour → adjusts presence in the mix
- 10 dB Gain → clean for arpeggios or light rhythms
- Boost → powerful solos
Final advice:
- Hi Boost + Treble alto → cut and definition
- Lo Cut + Bass moderate → clean and controlled sound
- Mid Contour → adapt to the mix
- Boost → for solos or powerful parts
- Perfect for rock, blues and versatile metal
Setup Examples
Clean defined / arpeggios
Crunch rock / riffs
Powerful lead/solo
Van Halen – “Classic Rock Crunch”
Description: Bright and aggressive sound, perfect for 80s rock riffs, harmonies and leads with moderate sustain.
Steve Morse – “Articulate Lead”
Description: Clear and articulate sound, perfect for melodic solos, arpeggios and complex parts with precise dynamics.
Joe Satriani – “Lead Shredding”
Description: Powerful, bright and defined lead, perfect for shredding, long sustain and punchy soloing.
Quick Tips:
- Van Halen → crunch and moderate sustain for rock rhythms
- Steve Morse → clean sound, definition and dynamics for complex solos
- Joe Satriani → high gain + hi boost → powerful and sharp leads