FNIRSI Oscilloscopes for
Audio & Music Makers.
See the sound. Debug synth oscillators, test guitar pedals, analyze amplifier circuits, and trace audio signal paths. Portable enough for the workbench, precise enough for serious audio work.
What Audio & Music Makers Can Do
Synth Oscillator Testing
Verify VCO waveforms, check oscillator tuning stability, and debug modular synth patches. See exactly what your oscillators are outputting—sine, saw, square, or triangle.
Guitar Pedal Debugging
Trace signals through your DIY pedal builds. Find where the signal dies, verify clipping stages, check bias points, and diagnose that mysterious hum or oscillation.
Amplifier Analysis
Check for crossover distortion, measure clipping thresholds, verify frequency response, and diagnose tube amp issues. See the actual waveform your amp produces.
Audio Signal Tracing
Follow signals through mixers, preamps, and effects chains. Find where levels drop, identify ground loops, and verify signal integrity at every stage.
Filter Characterisation
Measure filter cutoff frequencies, check resonance behaviour, and verify envelope response. Essential for synth DIY and audio processor design.
Vintage Gear Restoration
Debug old synthesisers, restore classic effects units, and repair vintage amps. See what’s happening inside gear where schematics are lost or unavailable.
Recommended for Audio & Music Makers
FNIRSI DSO510 Mini 2-in-1
50MHz • 200MSa/s • Portable • 2.4″ LCD • Built-in Signal Generator
FNIRSI DST-210 3-in-1
10MHz Scope • 50MSa/s • 10000 Counts DMM • Signal Generator • 2.8″ Display
FNIRSI 2C53T 3-in-1
50MHz • 250MSa/s • 2 Channels • 20000 Counts DMM • Signal Generator
FNIRSI 1014D 7″ Touchscreen
100MHz • 1GSa/s • 2 Channels • DDS Generator • 7″ Touch Screen
Why Audio & Music Makers Need an Oscilloscope
Your multimeter shows voltage. An oscilloscope shows you the actual waveform. When your DIY fuzz pedal sounds wrong, is it the gain staging, the bias, or oscillation? The scope shows you in milliseconds.
Professional audio engineers and synth designers use oscilloscopes because audio is about waveforms, not just voltage levels. For DIY builds and repairs, it’s the difference between guessing and knowing.
- See waveforms instead of just measuring voltage
- Diagnose distortion and clipping visually
- Trace audio paths to find exactly where problems occur
- Test oscillators and filters in synth builds
Problem: DIY fuzz pedal sounds
harsh and gated
Multimeter approach:
Voltages look correct…
Replace transistors? £8
Still sounds bad…
New build from scratch? £40+
Oscilloscope approach:
Input: Clean sine wave
Stage 1: Good clipping
Stage 2: Parasitic oscillation!
→ Missing input cap
Fix: Add 100pF cap = £0.05
What You Need for Audio Work
| Audio Task | Signal Type | Bandwidth Needed | Channels |
|---|---|---|---|
| Audio signal tracing (20Hz-20kHz) | AC audio | 1MHz plenty | 1 |
| Synth oscillator testing | Various waveforms | 10MHz | 1 (2 better) |
| Guitar pedal debugging | Clipped/distorted | 10MHz | 1 |
| Stereo signal comparison | L/R channels | 10MHz | 2 (essential) |
| Amplifier distortion analysis | Clipping, crossover | 20MHz | 1 |
| Filter frequency response | Swept sine | 10MHz | 2 (in/out) |
| Digital audio (I2S, SPDIF) | Digital signals | 50MHz+ | 2 |
What Audio & Music Makers Say
“Built a Eurorack VCO module and couldn’t get it to track properly. The scope showed my saw wave had a glitch at the reset point. Fixed it in minutes—would have taken days with just a meter.”
“I mod and build guitar pedals as a hobby. This scope has completely changed how I debug circuits. Can actually see what the signal looks like at each stage instead of just guessing.”
“Restoring a vintage Roland Juno-60. The scope helped me find a failing VCA chip by comparing channels. Would’ve been nearly impossible to diagnose otherwise. Brilliant bit of kit.”
Audio & Music Maker FAQ
Common questions from synth builders, pedal makers, amp techs, and audio enthusiasts about using oscilloscopes for audio work.
Ask Us AnythingSee the Sound.
Fix the Problem.
From synth oscillators to guitar pedals to vintage amp repairs—an oscilloscope transforms how you work with audio. From £38, delivered to your bench in 1-2 days.