Pro-Ject Audio Systems
Pro-Ject Phono Box S3 B
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Best Phono Preamps · head-to-head
Pro-Ject Phono Box S3 B vs Musical Fidelity V90-LPS
A sourced, side-by-side comparison. Pro-Ject Phono Box S3 B is cheaper at —. Every spec and price links to its source.
Musical Fidelity
Musical Fidelity V90-LPS
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Pro-Ject Phono Box S3 B | Musical Fidelity V90-LPS |
|---|---|---|
| US price | — | — |
| Brand | Pro-Ject Audio Systems | Musical Fidelity |
| Released | — | — |
| Cartridge support | MM and MC | MM and MC, switchable inputs |
| Gain (dB) | 40/45/60/65 dB, plus an additional +6 dB available via the balanced XLR outputs | — |
| Snr (dB) | MM: 103/110 dB(A); MC: 85/90 dB(A) | MM: >80 dB(A); MC: >70 dB(A) |
| Riaa accuracy | <0.3 dB (20 Hz - 20 kHz) | ±0.25 dB |
| Input capacitance pf | 50/150/300/400 pF selectable | 100 |
| Subsonic filter | 20 Hz, 18 dB/octave rolloff | — |
| Thd percent | MM: <0.001% @1kHz, <0.008% 20Hz-20kHz; MC: <0.005% @1kHz, <0.01% 20Hz-20kHz | 0.01% (MM/MC) @ 1kHz, 300mV out |
| Output level | Balanced XLR and single-ended RCA outputs | 300 mV (reference level for stated specs) |
Sources — Pro-Ject Phono Box S3 B: project-audio.com (verified 2026-08-12). Musical Fidelity V90-LPS: musicalfidelity.com (verified 2026-08-12).
What's the difference between the Pro-Ject Phono Box S3 B and Musical Fidelity V90-LPS?
Where the two actually differ on the specs we track (6 of 8). Matching specs are omitted.
- Cartridge support: Pro-Ject Phono Box S3 B MM and MC vs Musical Fidelity V90-LPS MM and MC, switchable inputs
- Snr (dB): Pro-Ject Phono Box S3 B MM: 103/110 dB(A); MC: 85/90 dB(A) vs Musical Fidelity V90-LPS MM: >80 dB(A); MC: >70 dB(A)
- Riaa accuracy: Pro-Ject Phono Box S3 B <0.3 dB (20 Hz - 20 kHz) vs Musical Fidelity V90-LPS ±0.25 dB
- Input capacitance pf: Pro-Ject Phono Box S3 B 50/150/300/400 pF selectable vs Musical Fidelity V90-LPS 100
- Thd percent: Pro-Ject Phono Box S3 B MM: <0.001% @1kHz, <0.008% 20Hz-20kHz; MC: <0.005% @1kHz, <0.01% 20Hz-20kHz vs Musical Fidelity V90-LPS 0.01% (MM/MC) @ 1kHz, 300mV out
- Output level: Pro-Ject Phono Box S3 B Balanced XLR and single-ended RCA outputs vs Musical Fidelity V90-LPS 300 mV (reference level for stated specs)