The default 4x10 cab has a low resonance at 100Hz. If you are playing drop D or 7-string (unusual for this amp, but fun), move the Low resonance frequency to 80Hz and increase the Q factor to 5. This makes the 345 thump like a closed-back 4x12 while retaining the open top end.
This is the "Easy Mode."
| Scenario | Adjustment | |----------|------------| | More headroom | Reduce input gain, increase master volume | | Tighter low end | Add a Tube Screamer-style boost (drive 0, level 7) | | More sustain | Increase compression or add a slight delay | | Brighter tone | Move mic to center cone or add presence EQ | | Darker/jazz tone | Roll off guitar tone knob or add low-pass filter at 3.5 kHz | overloud th3 345
Most users stop at the front panel. To unlock the "345" fully, you need to go into the "Service" panel (the wrench icon).
To help you get started, here are three ready-to-use settings for the Overloud TH3 345 that require zero tweaking. The default 4x10 cab has a low resonance at 100Hz
From 45+ forum threads (2020–2025):
| Issue | Frequency | Workaround |
|-------|-----------|-------------|
| Harsh fizz on high notes (above 12th fret) | Very common | Add a low-pass filter at 7.5 kHz post-cab |
| Noise floor too high for single-coil pickups | Moderate | Increase gate threshold to -45 dB, add a downward expander |
| Phase cancellation when dual amps are summed | Rare (mostly with stereo widening) | Flip phase on "Hot Lead 3" channel |
| Preset not found after TH3 update | Isolated (v1.2.1 → v1.3) | Re-scan preset database; manually copy .th3 file | This is the "Easy Mode
Critical bug (fixed in v1.2.5): Early versions of Preset 345 caused a feedback loop if the built-in tuner was opened while the delay was active. Overloud patched this in 2021.
If you are scrolling through your plugin list, you might have spotted the Overloud TH3 sitting in your library. It remains one of the most versatile amp simulators on the market, boasting a massive collection of amp models and a proprietary Rig Player technology.
But even with the best tools, it’s easy to get stuck in "preset paralysis." That brings us to the "345" concept. Whether this refers to a specific user patch, a firmware build, or simply a magic number for gain, today we are diving into how to squeeze massive tone out of TH3.
