The Harley Benton MiniStomp The Deep is a five-band EQ pedal built for bass. Each of its five bands offers up to 18 dB of cut or boost, which Harley Benton says gives you "full control (+/- 18 dB) on 5 bands at frequencies that are crucial to your bass tone"1. The listed band frequencies include 125 Hz, 500 Hz and 4 kHz, each with the same 18 dB range1.
The pedal is part of Harley Benton's MiniStomp line, a family of compact effects in small metal enclosures. The Deep measures 92 x 38 x 32 mm and weighs 133 g, with a solid metal housing1. Harley Benton describes it as "a great little companion that ensures your sound is tuned just right, wherever you go"1. As the maker puts it, "An EQ is a must-have on any bassist's pedalboard"1.
A five-band EQ for bass
An EQ pedal lets you cut or boost specific frequency ranges rather than shaping your whole tone at once, which makes it useful for fixing problem frequencies, adding low-end weight, or pulling back mud without changing your amp settings. The Deep gives you that control in five bands, each with a range of plus or minus 18 dB1.
Harley Benton lists band frequencies including 125 Hz, 500 Hz and 4 kHz1. For a bassist, the low bands sit where the fundamental of the low strings lives, while the higher bands cover the area where finger noise and definition live. The maker describes these as frequencies "crucial to your bass tone"1.
Alongside the EQ sliders, the pedal carries two more controls:
| Control | What it does |
|---|---|
| Five EQ bands | Up to +/- 18 dB of cut or boost each, at frequencies including 125 Hz, 500 Hz and 4 kHz1 |
| Level | Adjusts the level in your signal chain1 |
| On/off switch | Engages and bypasses the EQ1 |
RockBoard's PedalPedia entry notes the Level control in particular: "The Deep features a Level control, which is always handy to have in your signal chain"2. That control means you can compensate for the overall level change that heavy EQ moves can cause, matching your bypassed and engaged volumes.
The circuit is analog, according to RockBoard's PedalPedia listing for the pedal2. The Deep uses true bypass, which Harley Benton says eliminates signal interference when the pedal is switched off1.
Power and connections
The Deep connects with a 6.3 mm jack input and a 6.3 mm jack output1. Power comes from a 9V mains adapter with center negative polarity, and the adapter is not included in the scope of delivery, so you need to provide your own1. The pedal draws 20 mA1.
The Deep does not ship with a power supply. You need a 9V DC adapter with center negative polarity, the standard arrangement used by most pedalboard power supplies, before you can run the pedal1.
At 20 mA, the pedal's draw is low enough that it can share a typical isolated pedalboard power output with other small pedals without strain, and its 92 x 38 x 32 mm footprint takes up little board space1.
Questions
Is the Harley Benton MiniStomp The Deep true bypass?
Yes. Harley Benton lists true bypass for The Deep, which the maker says eliminates signal interference when the pedal is switched off, so your dry signal passes through untouched when the EQ is disengaged.
Does The Deep come with a power supply?
No. The Deep is powered by a 9V DC mains adapter with center negative polarity, and the adapter is not included in the scope of delivery, so you need to supply your own. It draws 20 mA.
Is The Deep an analog EQ?
Yes. RockBoard's PedalPedia listing for The Deep gives the circuit type as analog, so the five bands are shaped by an analog circuit rather than digital processing.
Which frequencies does The Deep control?
The Deep gives you five bands with up to 18 dB of cut or boost each. Harley Benton lists the band frequencies as 62.5 Hz, 125 Hz, 500 Hz and 4 kHz, covering the range the maker calls crucial to bass tone.
Can I use The Deep with a guitar?
The Deep is designed as a bass EQ, and Harley Benton describes its bands as frequencies crucial to your bass tone. The maker positions it as an EQ for bassists rather than a general-purpose guitar EQ.
Sources (2)
- MiniStomp The Deep, Harley Benton
- MiniStomp The Deep by Harley Benton, RockBoard PedalPedia, 2026