Headrush Amplifiers
65 J45
Inspired by Marshall JTM45
The model 65 J45 It's inspired by amplifiers British vintage 60s, with a tone warm, powerful and defined, ideal for:
- Blues, classic rock and hard rock
- Pedal platform: great for overdrive, boost and modulations
- Full-bodied sound, with medium-high headroom and good dynamic response
It includes advanced controls for Presence and High Volume, allowing you to shape both clean sound and natural crunch in detailed detail.
BluesRockAcousticBassHard RockClassic Rock
Controls
Treble
Control the high frequencies:
- Low → softer sound
- High → bright and punchy
Middle
Controls the mid frequencies:
- Low → scooped, more open sound
- High → full and defined body
Bass
Control the low frequencies:
- Low → tighter and more defined
- High → fuller, can become muddy
Presence
Controls the final high frequencies and the attack of the sound:
- Low → softer and rounder tone
- High → more aggressive and cutting tone Ideal for balancing the sound in the mix or with other amplifiers/pedals.
High Volume
Control saturation when the volume is high:
- Low → clean with light crunch
- High → strong natural crunch/overdrive
Normal Volume
Controls the basic volume:
- Low → clean
- High → light natural crunch
Output Level
Final amplifier volume control:
- Negative → attenuation 0 d
- B → neutral level
- Positive → boost of the final signal Does not alter the timbre, only the overall level.
Pro Tips
BEHAVIOR OF THE AMPLIFIER
- Full-bodied and defined sound with controllable natural breakup
- Dynamic response to guitar touch and volume
- Presence → defines incisiveness and final brilliance
- High Volume → manages crunch and saturation
Advice:
- Treble + Presence → brilliance and definition
- Middle + Bass → body and fullness
- High Volume → adjusts saturation for powerful solos or rhythm parts
- Normal Volume → controls the basic clean level
- Output Level → balances the overall volume
Final advice:
- Treble + Presence → define brilliance and attack
- Middle + Bass → body and fullness of the sound
- High Volume → handles crunch for powerful solos
- Normal Volume → controls the basic clean sound
- Output Level → balance the sound with pedals and other blocks
Setup Examples
Clean vintage
Treble50%
Middle45%
Bass40%
Presence50%
High Volume40%
Normal Volume40%
Output Level0dB
Crunch blues
Treble55%
Middle50%
Bass45%
Presence55%
High Volume50%
Normal Volume50%
Output Level+1 dB
Rock/Powerful solos
Treble60%
Middle45%
Bass45%
Presence60%
High Volume60%
Normal Volume55%
Output Level+2 dB