Mesa/Boogie Fillmore 25 Settings Guide
The Mesa/Boogie Fillmore 25 is a 25-watt, single-channel (selectable to 10W) all-tube head inspired by the vintage American clean sounds of the Fillmore Ballroom era — the San Francisco acid-rock clean tones of the late 1960s. 6V6 power tubes produce a warm, compressed American clean character that breaks up naturally at higher volume — positioned between a clean pedal platform and a vintage Fender-style natural breakup amp.
The best Mesa/Boogie Fillmore 25 settings start with: Volume at 5/10, Gain at 4/10, Bass at 5/10, Mid at 5/10, Treble at 5/10, Presence at 4/10, Reverb at 3/10. Adjust from there based on your amp, guitar, and room volume. For Clean / Psychedelic: Volume 5/10, Gain 3/10, Bass 5/10, Mid 5/10, Treble 5/10, Presence 3/10, Reverb 5/10.
⚡ Start Here — Recommended Settings
| Control | Starting Position | Range |
|---|---|---|
| Volume | 5/10 | Silent → Loud |
| Gain | 4/10 | Clean → Drive |
| Bass | 5/10 | Thin → Full |
| Mid | 5/10 | Scooped → Forward |
| Treble | 5/10 | Dark → Bright |
| Presence | 4/10 | Warm → Crisp |
| Reverb | 3/10 | Dry → Wet |
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
The Fillmore 25 at its natural clean setting — generous Reverb for the Fillmore ballroom wash, balanced EQ. Gain 3 retains clean headroom. The 6V6 power stage produces the warm, slightly rounded low-mid character of vintage Fender amps.
Higher Volume pushes the 6V6 power tubes toward natural breakup — the core of the Fillmore 25 blues tone. Mid 6 provides cut. This setting responds dynamically to guitar volume; rolled back to 7 produces a clean platform, open at 10 breaks up naturally.
Low Gain and Volume for maximum clean headroom with a Telecaster or bright single-coil. Treble 6 provides Tele sparkle. A compression pedal before the amp completes the clean country platform.
Moderate Volume and Gain reach a light natural breakup that stays dynamic under picking, with generous Reverb adding atmosphere for jangly, textural rhythm playing.
Higher Volume pushes the 6V6 power section into a warm, singing breakup well suited to lead playing, while Gain stays moderate so touch dynamics remain audible rather than compressing into a flat wall.
Tips & Common Mistakes
- The 10W / 25W switch changes the number of active 6V6 power tubes, producing significantly earlier power-amp saturation in 10W mode. For home practice and recording, 10W mode lets the power tubes work harder at tolerable volume levels.
- The Fillmore 25 is designed as a pedal platform first — it has a very clean, transparent preamp at low Gain settings that lets overdrive and fuzz pedals define the gain character without the amp imposing its own coloration.
- The 6V6 power tubes give this amp a rounder, softer low end than a 6L6-loaded amp of similar output — a real factor if switching from a Twin Reverb or Deluxe Reverb and expecting an identical response.
- Reverb above 5 starts to dominate the mix on this circuit — for most band contexts, 2 to 4 keeps the spring character present without smearing note attack.
- A single dynamic microphone close to the cone, slightly off-axis, captures this amp accurately for recording — the Fillmore is voiced to sound complete without needing a second microphone or a room mic.
- Because Gain stays clean-leaning even at moderate settings, a separate overdrive pedal is generally more useful than pushing this amp control past 6 to 7 for anything beyond light breakup.
FAQ
Mesa/Boogie Fillmore 25 — Common Questions
Best starting settings for Mesa/Boogie Fillmore 25: Volume at 5/10, Gain at 4/10, Bass at 5/10, Mid at 5/10, Treble at 5/10, Presence at 4/10, Reverb at 3/10. Adjust from there based on your guitar, room, and playing style.
For Clean / Psychedelic: Volume 5/10, Gain 3/10, Bass 5/10, Mid 5/10, Treble 5/10, Presence 3/10, Reverb 5/10. The Fillmore 25 at its natural clean setting — generous Reverb for the Fillmore ballroom wash, balanced EQ. Gain 3 retains clean headroom. The 6V6 power stage produces the warm, slightly rounded low-mid character of vintage Fender amps.
For Blues: Volume 7/10, Gain 5/10, Bass 5/10, Mid 6/10, Treble 5/10, Presence 4/10, Reverb 3/10. Higher Volume pushes the 6V6 power tubes toward natural breakup — the core of the Fillmore 25 blues tone. Mid 6 provides cut. This setting responds dynamically to guitar volume; rolled back to 7 produces a clean platform, open at 10 breaks up naturally.
Volume: Primary level and drive control. Higher settings push 6V6 power tubes toward natural breakup. (Silent to Loud). Gain: Preamp gain stage drive. (Clean to Drive). Bass: Low-frequency EQ. (Thin to Full). Mid: Midrange EQ. (Scooped to Forward). Treble: High-frequency EQ. (Dark to Bright). Presence: Power-amp high-frequency resonance. (Warm to Crisp). Reverb: On-board spring reverb. (Dry to Wet)
The 10W / 25W switch changes the number of active 6V6 power tubes, producing significantly earlier power-amp saturation in 10W mode. For home practice and recording, 10W mode lets the power tubes work harder at tolerable volume levels. The Fillmore 25 is designed as a pedal platform first — it has a very clean, transparent preamp at low Gain settings that lets overdrive and fuzz pedals define the gain character without the amp imposing its own coloration. The 6V6 power tubes give this amp a rounder, softer low end than a 6L6-loaded amp of similar output — a real factor if switching from a Twin Reverb or Deluxe Reverb and expecting an identical response. Reverb above 5 starts to dominate the mix on this circuit — for most band contexts, 2 to 4 keeps the spring character present without smearing note attack. A single dynamic microphone close to the cone, slightly off-axis, captures this amp accurately for recording — the Fillmore is voiced to sound complete without needing a second microphone or a room mic. Because Gain stays clean-leaning even at moderate settings, a separate overdrive pedal is generally more useful than pushing this amp control past 6 to 7 for anything beyond light breakup.
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