The Behringer UT300 Ultra Tremolo is an analog tremolo pedal from Behringer. Behringer positions it as the way to get "the classic tremolo made famous by vintage '50s amps," the effect old amplifier builders produced by pulsing the volume of the instrument signal at a user-adjustable rate1. It is a compact stomp box with three knobs, and it draws its circuit layout from one of the best-known tremolo pedals ever made.
What the UT300 does to your sound
Tremolo is one of the oldest electric guitar effects: the volume of your signal rises and falls in a repeating cycle, giving that shivering, surging quality heard on countless recordings from the 1950s onward. Behringer describes the UT300 as reproducing the classic tremolo of vintage '50s amps, which pulsed the volume of the instrument signal at a rate the player set1.
With its dedicated Rate, Wave and Depth dials, Behringer says you can shape a pulsating tremolo that covers everything from rowdy rockabilly onward3. Rate sets how fast the volume pulses, Depth sets how far the volume dips, and Wave shapes the character of the pulse. For a beginner, it is one of the simplest modulation pedals to understand: three knobs, one effect, no menus.
Controls
| Control | What it does |
|---|---|
| Rate | Sets the speed of the volume pulse |
| Wave | Shapes the character of the pulse |
| Depth | Sets how deeply the volume dips |
The three-knob layout is the same arrangement BOSS used on the TR-2, whose dedicated Wave, Rate and Depth knobs BOSS says provide "a multitude of effect possibilities"4.
Power
The UT300 runs on 9V DC, center negative, and draws 30mA2. Behringer says you can power it with the company's PSU-SB DC power supply, which is not included, or with a 9V battery1. The center-negative 9V standard means it will run from most common pedalboard power supplies, and the 30mA draw is light enough for a shared output on most multi-output supplies.
The BOSS TR-2 circuit behind it
The UT300's design follows the BOSS TR-2, a compact tremolo pedal BOSS designed to provide classic tremolo effects in an easy-to-use format41. JHS Pedals, in a history of tremolo pedals, called the TR-2 "one of the most iconic" tremolos among the many that followed the effect's early days5.
On the relationship between the two pedals, JHS's Josh said: "The Ultra Tremolo UT300 is a three knob tremolo. The original BOSS TR2 is a three knob tremolo, very similar labelings," describing the UT300 as based on the TR-2 with an almost identical sound64. For a player choosing between them, the practical difference is the maker and the price bracket rather than the control layout.
One thing worth knowing about the TR-2 design family: Guitar Pedal X's Stefan Karlsson noted that a volume drop issue exists for the BOSS TR-2 Tremolo, and that he uses a modded version with an additional volume circuit to address it7. The UT300 shares the TR-2's circuit lineage, so players sensitive to level matching may want to hear the pedal in their own chain.
Videos
SLÄRP
The Guitar Manifesto
Chuck's Guitar Geekery
Questions
Is the Behringer UT300 analog or digital?
The UT300 is an analog pedal. RockBoard's PedalPedia listing for the UT300 Ultra Tremolo gives its circuit type as analog, so it processes your guitar signal with analog circuitry rather than digital conversion. That matters for players building a board around analog pedals or who prefer how analog modulation pedals sit in a signal chain.
How much current does the Behringer UT300 draw?
The UT300 draws 30mA, according to RockBoard's PedalPedia listing. That is a modest draw by pedal standards, well within what a standard 9V supply or isolated output can deliver, though it is worth adding up the draw of everything sharing a daisy-chained output before plugging in.
Is the Behringer UT300 a copy of the BOSS TR-2?
JHS Pedals describes the UT300 as based on the BOSS TR-2. Josh of JHS notes that both are three-knob tremolos with very similar knob labelings and an almost identical sound. The TR-2 itself is a long-standing BOSS design, described by JHS as one of the most iconic tremolos.
What power supply does the Behringer UT300 need?
Behringer says the UT300 runs on 9V DC, center negative. You can power it with Behringer's PSU-SB DC power supply, which is not included, or with a 9V battery. The center-negative 9V standard means it works with most common pedalboard power supplies.
Sources (7)
- UT300 | Behringer, Behringer
- UT300 Ultra Tremolo by Behringer, RockBoard PedalPedia, 2026
- UT300 | Behringer, Behringer
- TR-2 Tremolo by BOSS, RockBoard PedalPedia, 2026
- UNDERSTANDING MODULATION PEDALS, JHS Pedals
- WHAT'S THE DEAL WITH BEHRINGER?, JHS Pedals
- Guitar Pedal X, Guitar Pedal X, 2024-05-01
