Overview
This article summarizes Total Harmonic Distortion plus Noise (THD+N) measurements of the WVC-LITE compared to two other wireless volume controllers in the same product category. Testing was conducted using a professional audio analyzer (Quant Asylum QA403) across the full 20 Hz to 20 kHz frequency range at 100% volume.
The WVC-PRO was not included in this comparison. The WVC-LITE was selected as the most representative unit for a like-for-like comparison.
Test Methodology
- Analyzer: Quant Asylum QA403
- Input scale: 12 dBV
- Sweep: 20 Hz to 20 kHz, logarithmic, 10 points per octave
- Channel: Left channel only (for consistent comparison across all three units)
- Volume level: 100% on all units
- Measurement: THD+N percentage vs. frequency
Results Summary
Low-Frequency Range (Below 50 Hz)
This is the most relevant range for typical wireless bass knob use cases (subwoofer control).
| Unit | THD+N (approx.) |
|---|---|
| WVC-LITE | ~0.0005% |
| Competing wireless bass knob (Unit A) | ~0.0018% |
| Competing wireless bass knob (Unit B) | ~0.0035% |
At frequencies below 50 Hz, the WVC-LITE measured approximately 3.5 times lower THD+N than Unit A and approximately 7 times lower than Unit B.
Mid-Frequency Range (~500 Hz and Above)
As frequency increases toward the mid-range, the picture shifts:
- Unit B shows a rising THD+N trend beginning around 500 Hz.
- Both Unit B and Unit A plateau at approximately 0.012% THD+N in the mid-frequency range.
- The WVC-LITE continues to measure below 0.001% (approximately 0.00009%) through this region, roughly 130 times lower than the comparison units at their plateau.
High-Frequency Range (Above ~8 kHz)
All three units converge and measure very cleanly above approximately 8 kHz, dropping below 0.001% THD+N. Differences between units are negligible at these frequencies.
Interpretation
For the primary use case of wireless bass / subwoofer control, where signal content is concentrated below 80 to 100 Hz, the WVC-LITE measures meaningfully lower distortion than the two comparison units. The advantage is most pronounced in the sub-bass region and grows further in the mid-frequency range, where the comparison units plateau at distortion levels roughly two orders of magnitude higher than the WVC-LITE.
For full-range signal applications (mids, highs, or full-range amplifier control), all three units perform comparably at the high end of the audio spectrum.