impulse9
Hand-built in Poland
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ΞΥΝΘ-9

Z5‑VN (Violin Overdrive)

A tape-tube hybrid overdrive engine for piezo-based violin. Plug-and-play design, PA-ready, with no need for guitar amps.

Single-channel analog-inspired hybrid overdrive and tone-shaping engine with Drive, Lead Bias, Master, and switchable five-band EQ. mix-ready plug-and-play design — no amp required.
All samples recorded with acoustic violin equipped with a piezo pickup
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Processor soma-AXON logo
Based on pretrained profiles, it reacts naturally to bow pressure and dynamics while keeping the setup simple and consistent.
Drive & Lead Bias
Presaturation gain range from -∞ dB to +48 dB, with adjustable bias offset to alter tonal interaction, articulation, and dynamic response.
Five-Band EQ
Precise tone shaping across violin-specific frequency bands — from body resonance to high-end clarity.
Impulse Response
Onboard Impulse Response (IR) delivers PA-ready tonal response, fully optimized for overdriven violin frequency range. Eliminates the need for guitar amps or cabinets.
Switchable Character
Vintage — warm, soft with natural low-end. Modern — focused, fast response with extended harmonics.
Interface Lock
Lock or recall knob states instantly for stable stage settings.
Preamps
Two high-impedance piezo preamps (Hi-C / Lo-C) plus a selectable line input for active systems.
Bypass
Switchable true or digital bypass.
Samplerate & Latency
176.4 kHz / 24-bit internal processing with sub 2 ms total I/O latency.
Power
9 V DC (center-negative), 600 mA minimum. Linear regulated supply required.

Playthrough Demo

Overview

Z5 — Violin Hybrid Overdrive

The Z5 is a tape-tube hybrid overdrive engineered specifically for piezo-based violin. By fusing the smooth warmth of tape with the dynamics of tube circuitry, it delivers expressive harmonic drive while preserving the natural character of the violin. This design enhances and complements the violin's natural tone and responsiveness, unlike guitar amplifiers or generic overdrive pedals.

Fully PA-ready, the Z5 completely eliminates the need for external analog gear like amps or cabinets, providing plug-and-play tone for stage or studio. Players can use it directly into PA systems, mixers, or monitors without sacrificing clarity, dynamics, or tonality.

Core controls — Drive and Lead Bias — allow precise shaping of saturation, articulation, and dynamic response. The Character switch selects between Vintage (warm, soft, and natural low-end) and Modern (tight, harmonically extended, fast) drive models.

The Z5 features a dedicated five-band EQ for precise tone-shaping that extends beyond what's typically available in instrument overdrives. Each band is tuned to musically relevant frequency ranges for bowed strings, allowing precise control over body warmth, midrange focus, and high-end attack.

Onboard Impulse Response (IR) delivers a full-range, strings-optimized tonal response suited for hi-gain violin sound. Combined with high-impedance preamps optimized for both high- and low-capacitance piezo systems, along with a dedicated line input for active instruments or external effects the Z5 maintains proper impedance matching, natural frequency response, and consistent performance across setups.

With the Interface Lock system, players can store and recall knob settings instantly during a performance, while Edit mode allows selective unlocking of individual knobs for on-the-fly adjustments.

In short, the Z5 is a compact purpose-built overdrive platform for violin that fuses tape and tube technologies, replaces traditional guitar amplification methods, and provides expressive, plug-and-play hi-gain tone for professional performance and recording.

Frequently Asked Questions

Everything you need to know about the impulse9 Z5-VN Violin Overdrive

1. General Product & Concept

What is the impulse9 Z5-VN Violin Overdrive?

The Z5-VN is a dedicated overdrive platform designed specifically for piezo-equipped violin instruments. It combines tape-style harmonic saturation with tube-inspired dynamic response, creating expressive overdrive while preserving the natural articulation and feel of the violin.

Who is the Z5-VN designed for?

The Z5-VN is designed for violinists using acoustic or electric violins equipped with piezo pickups who need professional overdriven tones without depending on guitar amplifiers or traditional guitar pedals.

How is the Z5-VN different from a guitar overdrive pedal?

The Z5-VN was engineered specifically around bowed string instruments. Unlike guitar pedals designed for magnetic pickups, it includes dedicated high-impedance piezo preamps, violin-specific EQ, impulse response processing, and direct PA-ready output.

Does the Z5-VN require a guitar amplifier?

No. The onboard Impulse Response system provides a complete tonal response optimized for overdriven violin. The Z5-VN can connect directly to a PA, mixer, audio interface, or monitor system.

2. Drive, Tone & Processing

What does the Drive control do?

Drive controls the presaturation gain applied to the input signal. The range extends from -∞ dB to +48 dB, allowing everything from subtle harmonic enhancement to aggressive overdrive textures.

What is Lead Bias?

Lead Bias changes how the violin interacts with the overdrive stage. Lower settings create a more vocal lead character, while higher settings provide a faster, harder and more modern response.

What tone shaping features does the Z5-VN offer?

The Z5-VN includes a five-band EQ tuned for violin frequencies, covering body resonance, midrange definition and high-end clarity. It also features two drive characters:

  • Vintage: warm, soft response with natural low-end.
  • Modern: focused response with extended harmonics.

3. Compatibility & Stage Use

How does the Z5-VN handle piezo pickups?

Two dedicated high-impedance preamps are available: Hi-C for high-capacitance piezo systems and Lo-C for low-capacitance systems. This ensures proper impedance matching and natural instrument response.

Can I use the Z5-VN with an acoustic violin?

Yes. Any acoustic violin equipped with a suitable piezo pickup can be connected directly to the Z5-VN.

How does the Interface Lock system work?

Interface Lock stores knob positions for reliable stage setups. Locked controls recall saved values, while Edit mode allows selected controls to be unlocked for live adjustments.

What latency does the Z5-VN have?

Internal processing runs at 176.4 kHz / 24-bit with less than 2 ms total I/O latency, making the unit suitable for real-time performance.

What power supply is required?

The Z5-VN requires a 9V DC center-negative power supply with at least 600 mA current capability. A high-quality linear regulated supply is recommended.

soma-AXON logo
Proprietary, instrument-aware DSP engine

soma-AXON runs at 176 kHz / 24-bit with sub-1 ms latency, and is optimized for bowed instruments. Capable of learning an instrument's characteristics, its goal is not to replace an acoustic tone but to complement it — adding controlled nonlinear warmth while preserving transient detail and playability.