The RandalePedale Blossom Filter is a hybrid of autowah and tremolo with tap tempo, built by the German maker RandalePedale. Delicious Audio's Paolo De Gregorio called it "RANDALE PEDALE's missing link between wah and tremolo," describing it as an autowah and tremolo hybrid filter pedal1. It sits between the two effect families: if you want to hear how a plain wah or a plain tremolo behaves on its own, see Wah-Wah Pedals and Tremolo Pedals, or the wider Filter Pedals group.
Controls
The pedal's controls cover both sides of its split personality:
| Control | What it does |
|---|---|
| RATE | Sets the tempo for the modulation speed, or tap it hands-free into the momentary TAP SWITCH with your foot1 |
| TAP SWITCH | Momentary footswitch for hands-free tempo tapping1 |
| Peak knob | Lets you set the wah's frequency1 |
| Wave Set toggle | Selects among multiple LFO shapes, together with the Shape knob1 |
| Shape knob | Selects among multiple LFO shapes, together with the Wave Set toggle1 |
| Multi (plier) button | For shorter LFO cycles1 |
| Second toggle switch | Turns the tremolo off1 |
LFO shapes
The modulation side offers a wide set of waveforms. Delicious Audio described the range this way: "From choppy square waves, rising or falling triangle waveforms to pulses and random waveforms, it's all in the BLOSSOM"1. The Wave Set toggle and Shape knob select between them, and the Multi (plier) button shortens the LFO cycles for faster movement1.
Using it as a filter only
The tremolo can be turned off through a second toggle switch1, which leaves the autowah side working on its own. That makes the pedal a filter-only effect when the volume modulation is not wanted, and it is the main way the Blossom differs from running a separate wah-style filter and a separate tremolo on a board.
Videos
Bratislav Methulsky
Bratislav Methulsky
Bratislav Methulsky
Questions
Does the RandalePedale Blossom Filter have tap tempo?
Yes. The pedal has a momentary TAP SWITCH that lets you tap the modulation tempo hands-free with your foot. Alternatively, the RATE control sets the modulation speed by hand, so you can choose between dialing in a tempo and tapping one in time with the band.
What LFO shapes does the Blossom Filter offer?
The Blossom Filter offers multiple LFO shapes, selected through the Wave Set toggle and the Shape knob. Delicious Audio describes the range as choppy square waves, rising or falling triangle waveforms, pulses, and random waveforms. A Multi (plier) button is also included for shorter LFO cycles.
Can the tremolo be turned off on the Blossom Filter?
Yes. A second toggle switch turns the tremolo off, leaving the autowah side of the circuit working on its own. That makes the pedal usable as a standalone filter effect when you do not want the volume modulation.
What does the Peak knob do on the Blossom Filter?
The Peak knob lets you set the wah's frequency, placing the filter where it sits in your tone. Together with the RATE control and the LFO shape options, it shapes how the autowah portion of the pedal moves across your sound.
Sources (1)
- New Pedals: RandalePedale Blossom Filter, Delicious Audio, 2020-08-17



