2hp Step (2012–2023)

Name: 2hp Step
Brand: 2hp

A deceptively simple 16-step sequencer that turns minimalism into a superpower—until you realize it’s rewiring your brain.

Overview

It’s the quiet one in the rack that everyone ends up staring at. You patch in a VCO, twist the knobs, and suddenly you’re hypnotized by a rhythm that feels both rigid and alive—like a metronome with a pulse. The 2hp Step doesn’t shout, but it commands attention. At just 2HP wide, it’s barely more than a sliver of brushed aluminum, yet it houses a full 16-step voltage sequencer capable of controlling pitch, filter cutoff, panning, or any other CV parameter you throw at it. There’s no screen, no menu diving, no endless presets—just 16 knobs, a clock input, a reset, and a single output. What it lacks in flash it makes up for in immediacy. This is sequencing stripped down to its nervous system, where every turn of a knob is a direct neural link to your sound.

Originally released in 2012, the Step arrived during the early swell of the Eurorack renaissance, when builders and players were still figuring out how much they could pack into vanishingly small spaces. 2hp, founded by engineer Tony Rolando, made its name by proving that minimal size didn’t have to mean minimal function. The Step was one of the brand’s earliest hits, not because it did everything, but because it did one thing brilliantly: step sequencing with tactile, hands-on control. It wasn’t the first 16-step CV sequencer, but it was among the first to fit into 2HP while maintaining individual per-step voltage control. That made it a favorite for minimalists, travelers, and anyone trying to squeeze more functionality into a cramped case.

Sonically, the Step doesn’t color your signal—it’s a utility module, not a sound source. But that neutrality is part of its charm. It doesn’t impose a character; it enables yours. Patch it to a filter, and it carves rhythmic holes in your sound. Patch it to an oscillator, and it generates melodies that feel deliberate, almost architectural. Because each step outputs a steady CV voltage, you can also use it to modulate effects depth, LFO rate, or even the position of a crossfader in a mixer. It’s not just for notes—it’s for motion. And because it runs on 3.3V logic, the voltage range is limited compared to some other sequencers (maxing out around 3.3V), but that’s rarely a dealbreaker in practice. Most oscillators respond just fine to that range, especially when transposed via octave switches elsewhere in the patch.

Specifications

Manufacturer	2hp
Production Years	2012–2023
Module Width	2HP
Depth	35mm
Current Draw +12V	20mA
Current Draw -12V	5mA
Steps	16
Step Resolution	8-bit (256 steps)
Output Voltage Range	0–3.3V
Clock Input	Yes, 3.5mm jack
Reset Input	Yes, 3.5mm jack
Run Input	No
Direction Control	No
CV Output	1 (per-step voltage)
Gate Output	No
Linkable	Yes, via 3.5mm cable to other 2hp sequencers
Linkable Modules	Seq, Step, Shift
Knobs	16 precision potentiometers
Color	Black anodized aluminum panel with white labels
Mounting	Standard Eurorack 3U

Key Features

The 2HP Miracle: Density Without Sacrifice

At 2HP, space is everything. Most modules at this width are passive attenuators or simple switches—functional, but not exactly inspiring. The Step defied that expectation by packing 16 individually adjustable voltage outputs into the same footprint. It’s a feat of minimalist engineering: each potentiometer is surface-mounted, the PCB is tightly layered, and the front panel is stripped of all non-essentials. There’s no LED per step, no skip function, no probability—just pure, unfiltered control. What you see is what you get, and what you get is enough. The real magic is in the linking capability. Using a 3.5mm patch cable, you can daisy-chain multiple 2hp sequencers—Step, Seq, or Shift—into a longer sequence. Two Steps give you 32 steps, three give you 48. This modularity turns a tiny module into a scalable sequencing engine, letting users build complexity without sacrificing rack space.

Tactile Precision in a Digital Core

Despite its analog interface, the Step runs on a microcontroller with 8-bit resolution per step. That means each knob controls a digital value that’s converted to a steady DC voltage. In practice, this results in extremely stable sequencing—no voltage drift, no wobble, no jitter. The trade-off is that the steps aren’t infinitely variable; you’re limited to 256 discrete voltage levels across the 0–3.3V range. For most musical applications, this is more than sufficient. You won’t hear stepping in pitch unless you’re doing microtonal work or extreme slow sweeps. The knobs themselves are small but precise, with a smooth taper that makes fine adjustments possible. They’re not motorized, so you can’t record automation, but that’s not the point. The Step is about manual, real-time composition—twisting knobs on the fly to reshape a sequence mid-performance.

Clock Discipline: No Slack, No Mercy

The Step doesn’t mess around with timing. It advances on the rising edge of the clock signal, and it does so with metronomic precision. There’s no swing, no humanization, no tap tempo—just a clean, rigid response to incoming pulses. This makes it ideal for tight, repetitive patterns, especially when synced to a DAW or drum machine. But it also means the Step won’t forgive sloppy clocks. If your clock source is jittery or inconsistent, the Step will reflect that immediately. It’s not a flaw—it’s fidelity. Reset input ensures you can hard-sync the sequence to a master clock or start point, which is crucial when chaining multiple sequencers or aligning with other rhythmic elements. However, the lack of a run input means you can’t start and stop the sequence via gate; you’ll need an external switch or logic module if you want to pause playback.

Historical Context

The 2hp Step emerged at a time when Eurorack was shifting from boutique curiosity to mainstream synth culture. In 2012, the format was still relatively niche, but expanding fast. Builders were experimenting with density, trying to see how much functionality could be crammed into minimal space. 2hp became a pioneer in this movement, not just with the Step but with a whole ecosystem of ultra-compact modules. The Step stood out because it solved a real problem: how to have expressive, per-step control without eating up precious panel real estate. Competitors like Doepfer offered more feature-rich sequencers (like the A-155), but they were significantly wider. The Step offered a different philosophy: do less, but do it perfectly, and save space for other experiments.

It also arrived alongside a growing interest in algorithmic and generative music. While the Step isn’t generative on its own, its simplicity made it a perfect partner for modules like the 2hp TM (Turing Machine) or Make Noise Rene. You could use a random source to set the Step’s voltages, then manually tweak them into something musical. In that sense, it became a bridge between chaos and order—a way to capture and refine generative ideas without losing human touch. Its design echoed the ethos of early computer music: minimal interfaces, maximum control, and a focus on process over polish.

Collectibility & Value

The 2hp Step was discontinued in 2023, marking the end of an era for one of Eurorack’s most iconic minimal modules. While 2hp has not officially stated why, many speculate it was due to component shortages or a strategic shift toward newer designs. Whatever the reason, its retirement has made it a sought-after piece, especially in full working condition. On the used market, prices range from $180 to $280 depending on condition and seller. Units with clean panels, smooth-turning knobs, and no wobble at the jacks command a premium. Because the module relies on precision potentiometers, worn or scratchy knobs are a common issue in heavily used units. These can often be cleaned with contact cleaner, but severe wear may require replacement—a delicate job given the tight spacing.

Failures are rare but not unheard of. The most common issue is intermittent output, usually caused by a failing jack or cold solder joint on the power pins. The microcontroller itself is robust, and there are no moving parts beyond the knobs, so long-term reliability is generally high. However, because the module is surface-mount and densely packed, repairs require skill and the right tools. DIY fixes are possible, but not beginner-friendly. When buying used, always test the module in a system if possible. Check that all 16 steps output a stable voltage, that the clock input responds reliably, and that linking works with another 2hp sequencer. Also inspect the rear of the PCB for any signs of rework or corrosion, especially near the power connector.

Despite its age, the Step holds up remarkably well in modern systems. Its 3.3V output is slightly lower than the 5V or 8V ranges of some oscillators, but this is easily corrected with an attenuverter or offset module. Many users treat it as a “subtle” sequencer—perfect for modulating filter cutoff or pan position, where extreme voltage swings aren’t needed. For melody sequencing, it works best with oscillators that have a wide tuning range or an octave switch. It’s not the most powerful sequencer out there, but it’s one of the most elegant. And in a world of bloated, feature-heavy modules, that elegance has lasting value.