Boss Katana 100 MkII Settings Guide
The Boss Katana 100 MkII is the mid-range model in Boss's Katana series — a 100-watt combo with a 12-inch speaker, 5 amp characters, and the full Boss effects library accessible via the free Tone Studio software. It builds on the Katana 50 MkII by adding more output power, a second speaker output for running an external cabinet, and 3-way wattage switching (100W/50W/0.5W). The Katana 100 is the most popular version of the series and is suitable for rehearsal and gigging, not just bedroom practice.
The best Boss Katana 100 MkII settings start with: Amp Character at 2/10, Gain at 5/10, Master at 6/10, Bass at 5/10, Middle at 5/10, Treble at 5/10, FX 1 / FX 2 at 3/10. Adjust from there based on your amp, guitar, and room volume. For Blues: Amp Character 2/10, Gain 5/10, Master 6/10, Bass 5/10, Middle 7/10, Treble 5/10, FX 1 / FX 2 2/10.
⚡ Start Here — Recommended Settings
| Control | Starting Position | Range |
|---|---|---|
| Amp Character | 2/10 | 1 (Clean) → 5 (Lead) |
| Gain | 5/10 | Clean → Maximum Drive |
| Master | 6/10 | Silent → Maximum |
| Bass | 5/10 | Cut → Boost |
| Middle | 5/10 | Cut → Boost |
| Treble | 5/10 | Dark → Bright |
| FX 1 / FX 2 | 3/10 | Off → Maximum |
These are universal starting points. Adjust based on your amp, guitar, and room. Scroll down for genre-specific settings and artist-documented positions.
What Each Control Does
Recommended Starting Settings
Safe starting positions for any style. Adjust from here based on your amp and room.
All values on a 0–10 scale. These are starting points — fine-tune by ear.
Settings by Genre
Crunch character at Gain 5 for edge-of-breakup — the Katana 100's Crunch voicing is its most blues-appropriate. Middle 7 adds vocal presence. Use the Boss Tone Studio app to add a spring reverb (Spring 63 or Gain Reverb) at low mix for the classic blues ambience.
Brown character at Gain 6 produces the warm British crunch for classic rock. The Brown voice is the Katana's most Marshall-influenced voicing. Use the Tone Studio app to add a subtle slapback delay (80–100ms, no feedback) for classic rock rhythm width.
Lead character at Gain 8 with V-EQ for metal. The Katana 100's Lead voice is tighter and more focused at high gain than the Katana 50 due to the additional output power. Add a noise suppressor effect (via Tone Studio) at the front of the signal chain for tight, noise-free metal rhythm.
Clean character at low Gain with bright Treble. Treble 7 captures the twang needed for country. Use the Tone Studio app to add a compressor (MDP Comp), short slapback delay (60ms), and touch of reverb. The Katana 100 handles clean country tones well at all volume levels.
Tips & Common Mistakes
- The Katana 100 MkII supports running in 50W with an external 8Ω cabinet for bi-amplified (stereo) setups — this dramatically widens the sound on stage.
- Unlike the Katana 50 MkII, the Katana 100 MkII has a dedicated Power Amp Input that bypasses the preamp. This is useful for running the Katana as a powered cabinet with a modeller (Line 6 Helix, HX Stomp) going directly into the power section.
- The 0.5W watt mode is not genuinely silent for home use — it's comparable to a very quiet conversation level. For truly silent practice, use the headphone output which includes a speaker simulation.
- Use the Boss Tone Studio app to unlock the full potential of the Katana 100 — the hardware panel controls access only a fraction of the available effects and parameters. The app allows deep editing of all 60+ built-in effects and their chain order.
- For live use, the Katana 100's footswitch connectivity (GA-FC or standard Boss footswitch) allows live switching of effects on/off and channel selection without reaching for the amp controls.
FAQ
Boss Katana 100 MkII — Common Questions
Best starting settings for Boss Katana 100 MkII: Amp Character at 2/10, Gain at 5/10, Master at 6/10, Bass at 5/10, Middle at 5/10, Treble at 5/10, FX 1 / FX 2 at 3/10. Adjust from there based on your guitar, room, and playing style.
For Blues: Amp Character 2/10, Gain 5/10, Master 6/10, Bass 5/10, Middle 7/10, Treble 5/10, FX 1 / FX 2 2/10. Crunch character at Gain 5 for edge-of-breakup — the Katana 100's Crunch voicing is its most blues-appropriate. Middle 7 adds vocal presence. Use the Boss Tone Studio app to add a spring reverb (Spring 63 or Gain Reverb) at low mix for the classic blues ambience.
For Classic Rock: Amp Character 3/10, Gain 6/10, Master 6/10, Bass 5/10, Middle 6/10, Treble 6/10, FX 1 / FX 2 1/10. Brown character at Gain 6 produces the warm British crunch for classic rock. The Brown voice is the Katana's most Marshall-influenced voicing. Use the Tone Studio app to add a subtle slapback delay (80–100ms, no feedback) for classic rock rhythm width.
Amp Character: Amp voicing selector — 5 positions: Clean, Crunch, Brown (variously described as a warm British voice), Lead (high gain), and Acoustic. Each character has its own preamp voicing. (1 (Clean) to 5 (Lead)). Gain: Input gain within the selected Amp Character. (Clean to Maximum Drive). Master: Power amp output level. In 0.5W mode, Master can be pushed to maximum for power-amp saturation at bedroom volumes. (Silent to Maximum). Bass: Low-frequency tone EQ — more authoritative than the Katana 50 due to the 100W output section. (Cut to Boost). Middle: Mid-range EQ. (Cut to Boost). Treble: High-frequency EQ. (Dark to Bright). FX 1 / FX 2: Two independent effects send levels — the Katana 100's panel controls are simplified; full effects editing requires the Tone Studio app. (Off to Maximum)
The Katana 100 MkII supports running in 50W with an external 8Ω cabinet for bi-amplified (stereo) setups — this dramatically widens the sound on stage. Unlike the Katana 50 MkII, the Katana 100 MkII has a dedicated Power Amp Input that bypasses the preamp. This is useful for running the Katana as a powered cabinet with a modeller (Line 6 Helix, HX Stomp) going directly into the power section. The 0.5W watt mode is not genuinely silent for home use — it's comparable to a very quiet conversation level. For truly silent practice, use the headphone output which includes a speaker simulation. Use the Boss Tone Studio app to unlock the full potential of the Katana 100 — the hardware panel controls access only a fraction of the available effects and parameters. The app allows deep editing of all 60+ built-in effects and their chain order. For live use, the Katana 100's footswitch connectivity (GA-FC or standard Boss footswitch) allows live switching of effects on/off and channel selection without reaching for the amp controls.
Got the Boss Katana 100 MkII? Build the rest of your rig.
Use the Rig Builder to find matching guitars, pedals and cables for your genre and budget.