Technical Analysis
Preamplifier Analysis with HD Phono Section:
The comprehensive analysis encompassed precision measurements of electronic signal path parameters of the preamplifier featuring dedicated HD phono section, multi-dimensional spectral analysis of frequency response characteristics, in-depth studies of circuit topology, and comparative benchmarking against reference solutions available in specifications from leading audio industry manufacturers.
Important! in our project we did not use cathode resistor bypass - **we prioritized sound purity**.
RadarChart
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Hardware Specifications
Signal Source Comparison
| Source | Noise Floor | Dynamic Range | Level Rec | THD+N | S/N | Rating |
|---|---|---|---|---|---|---|
| Phono Hi-Fi (ext.) | -65 dB | 78 dB | -0.9 dBV | 0.08% | 70 dB | ★★★☆☆ |
| Nishecon HD | -90 dB | 89 dB | -3.1 dBV | 0.012% | 90 dB | ★★★★★ |
| CD Player (digital) | -96 dB | 96 dB | 0 dBV | 0.001% | 100 dB | ★★★★★ |
Measurement Summary
Measurements confirm a very low noise floor and wide dynamic range of the HD Phono section. The device achieves performance comparable to high-end digital sources while maintaining analog character.
High RIAA curve accuracy and low THD+N indicate the use of carefully selected components.
External Preamp Comparison
| Model | THD+N | S/N | Dynamic Range | Gain | Rating |
|---|---|---|---|---|---|
| Nishecon HD | 0.012% | 90 dB | 89 dB | 69 dB | ★★★★★ |
| Pro-Ject Phono Box S2 | 0.05% | 85 dB | 88 dB | 60 dB | ★★★★☆ |
| Rega Fono MM MK3 | 0.03% | 82 dB | 84 dB | 42 dB | ★★★☆☆ |
| Schiit Mani 2 | 0.02% | 89 dB | 91 dB | 59 dB | ★★★★☆ |
Conclusions & External Comparison
Extensive comparative tests have proven that the HD phono-stage is a design meeting reference-class standards. It can capture every nuance of analog recording, enhancing dynamics, extending frequency response, and opening up the soundstage in a way that is perceptible even to the most demanding listeners.
Compared to other compact preamps in its class, the Nishecon HD demonstrates superior performance.
These results position the Nishecon HD as a top-tier solution for high-fidelity vinyl playback, competing directly with devices priced 2–3× higher.