RolandChannel Unveils SH-4d v2.0: Digital Expansion Done Right

Roland’s SH-4d has always positioned itself as a versatile desktop synthesizer, but the version 2.0 update is a clear signal that the company is committed to ongoing digital innovation. The update brings a suite of new features, most notably two additional oscillator models, alongside workflow and sequencing enhancements. This isn’t just a minor firmware bump—Roland is actively expanding the instrument’s core sonic palette and performance flexibility.

The video opens with a concise rundown of what’s new: Step and Harmonic Oscillator Models, pattern chaining, system-wide effects, a streamlined overwrite process, and more. The approach is classic RolandChannel—clear, feature-focused, and designed to inspire both new users and SH-4d veterans. The emphasis here is on how these updates translate into tangible creative options, not just technical bullet points.

The Step Oscillator Model introduces a step LFO modulator with up to 16 steps and 37 curve options per step, making it a playground for advanced modulation. Each step can be assigned to parameters like pitch, filter cutoff, amp, and pan, with two oscillators per voice, each offering their own shape, level, tuning, and pulse width. The workflow is hands-on: faders, encoders, and buttons allow for real-time tweaking and motion recording, letting users sculpt evolving sounds or complex rhythmic modulations with ease.

The Harmonic Oscillator Model, inspired by drawbar organs, brings four harmonics with fader-based control and additional timbre and rotary effects for authentic organ tones. But Roland doesn’t stop at emulation—the model is fully integrated into the SH-4d’s per-part synth architecture, meaning you can further process these tones with filters, envelopes, and LFOs. The result is a model that can do classic organ, deep house bass, or venture into experimental territory, all with the immediacy of dedicated controls.

Pattern chaining is a standout addition, allowing users to link patterns for automatic playback after a set number of repeats. The chain length is tied to the rhythm part’s step count, and users can specify the next pattern or simply move sequentially through their bank. This is a clear nod to live performance and extended studio sessions, where seamless transitions and evolving arrangements are key.

System-wide effects (reverb, chorus, delay) can now be applied globally, ensuring consistent sonic character across patterns. This is especially useful for live sets, as effect tails carry over between patterns, preventing abrupt cutoffs. The Quick Overwrite function streamlines saving, letting users capture all tone and pattern settings in one action—a small but significant boost for anyone iterating rapidly or performing on the fly.

The update introduces new Sub Step options, giving users the ability to nudge notes off the grid by increments from +10% to +90%. This granular timing control is accessible directly from the pattern sequencer, making it easy to inject swing, shuffle, or subtle timing variations into sequences. The demonstration shows how a simple clap or bass note can be shifted to create looser, more human grooves or to avoid clashes with other elements in the mix.

For users who crave rhythmic complexity or want to push beyond rigid step sequencing, these Sub Step features open up a new layer of expression. It’s a workflow enhancement that’s as much about feel as it is about precision, and it’s implemented in a way that encourages experimentation without menu-diving.