# Which studio monitor frequency response analyzer has the lowest noise floor? — Verified Specification Comparison

> All specification data verified from official manufacturer documentation.

Which studio monitor frequency response analyzer has the lowest noise floor?

## Products

### Stanford Research Systems SR1 Dual-Domain Audio Analyzer
```yaml
product: stanford-research-systems-sr1-dual-domain-audio-analyzer
brand: Stanford Research Systems
price_gbp: 12536.42
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
frequency_response: 10 Hz to 200 kHz
frequency_response_accuracy: ±0.008 dB from 20 Hz to 20 kHz
```

- **Price:** £12536.42 [^1]
- **Summary:** The SR1 is a professional dual-domain audio analyzer for precise analog and digital testing, with measurements up to 200 kHz, dual-channel FFTs, flexible signal generation, and digital audio interface analysis. It suits audio manufacturers, laboratories, and demanding test engineers who need very low distortion and noise performance.
- **Ideal For:** It suits the question because its analog analyzer noise floor is specified at ≤-118 dBu, alongside ≤-112 dB THD+N and ±0.008 dB frequency-response flatness.

### Ono Sokki CF-9200 Portable FFT Analyzer
```yaml
product: ono-sokki-cf-9200-portable-fft-analyzer
brand: Ono Sokki
price_gbp: 961495.08
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
impedance: 1 MΩ ±0.5%, 100 pF or less
frequency_response: DC to 100 kHz
frequency_response_accuracy: ±0.1 dB at 1 kHz
```

- **Price:** £961495.08 [^2]
- **Summary:** The CF-9200 is a portable two-channel FFT analyzer with a 10.4in touchscreen, 24-bit A/D converter, battery operation, and analysis bandwidth up to 100 kHz. It suits field engineers and laboratories measuring noise, vibration, resonance, and frequency characteristics without needing an external PC.
- **Ideal For:** It is a strong fit for finding a low-noise-floor studio monitor frequency response analyzer because it provides a 120 dB or greater dynamic range, harmonic distortion below -80 dB under 20 kHz, and ±0.1 dB full-scale accuracy at 1 kHz.
- **Additional Sources:** [^3]

---
## References & Sources
[^1]: Stanford Research Systems, accessed 2026-09-13. https://www.thinksrs.com/products/sr1.html
[^2]: Exporters India, accessed 2026-09-13. https://www.exportersindia.com/product-detail/fft-analyzer-9473587712.htm
[^3]: Ono Sokki India, accessed 2026-09-13. https://www.onosokki.in/portable-fft-analyzer.html