Boss EV-30

Boss EV-30 Dual Expression Pedal — Pro Control in a Compact Footprint

The Boss EV-30 Dual Expression Pedal delivers professional-grade real-time parameter control in a small, pedalboard-friendly chassis. Built around a die-cast aluminum body, this expression pedal brings an innovative internal mechanism that produces an ultra-smooth feel and precise parameter control, matching the performance of much larger units. The Boss EV-30 is engineered for guitarists, keyboardists, and multi-effects users who need to control wah, volume, delay feedback, reverb mix, or any assignable parameter with their foot.

Standout Engineering: Isolated Dual Outputs and Smooth Mechanism

What sets the EV-30 apart from typical single-output expression pedals is its pair of electronically isolated TRS outputs, which eliminate ground-loop noise when one pedal drives two devices simultaneously. The innovative internal mechanism provides a silky feel and smooth pivot, while the rugged die-cast aluminum chassis shares the same space-saving design language as the FV-30H/L volume pedals and the PW-3 wah.

Connectivity and Outputs — Two Devices, One Pedal

Connectivity defines the EV-30's value on a crowded pedalboard. Two separate expression outputs mean a single foot motion can sweep parameters on two different pieces of gear, freeing up valuable board space.

• Outputs: 2 × 1/4-inch TRS phone type (EXP 1 OUT, EXP 2 OUT) — drive two expression-equipped devices from one pedal
• Included Cable: 1 m stereo TRS cable — ready to connect out of the box
• Compatibility: stompbox pedals, multi-effects processors, keyboards, MIDI controllers — works with any gear that accepts a 1/4-inch TRS expression input

Controls and Adjustment — Fine-Tune Each Output Independently

The EV-30's control layout is built around per-output calibration, so each connected device receives the exact parameter range it needs.

• MIN Knobs: independent MIN knobs for EXP 1 and EXP 2 — set the minimum parameter shift for each output separately
• Polarity Switch: POLARITY switch on EXP 2 — flip to match the polarity expected by the connected device
• Potentiometer: 2 × separate 10 kΩ pots — compatible with expression inputs rated for 10–25 kΩ

Build, Dimensions, and Footprint — Pedalboard-Ready

The EV-30's chassis is built to survive stage use while keeping the footprint small enough for cramped boards.

• Chassis Material: die-cast aluminum — rock-solid foundation underfoot
• Dimensions: 80 mm W × 192 mm D × 58 mm H (max 92 mm) — compact enough to fit alongside compact stompboxes
• Weight: 780 g — heavy enough to stay planted, light enough to mount anywhere