Pro-Ject Audio Systems · Updated August 2026
Pro-Ject Phono Box S3 B: full specs
Pro-Ject Phono Box S3 B. Every price and spec below is linked to its source and dated — no guesses.
Source: project-audio.com verified verify in ledger
Specifications
| Price (US) | Not published US MSRP not published on the manufacturer's product page as fetched; check authorized US dealers for current pricing |
|---|---|
| Brand | Pro-Ject Audio Systems |
| Released | — |
| Cartridge support | MM and MC |
| 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) |
| Riaa accuracy | <0.3 dB (20 Hz - 20 kHz) |
| Input capacitance pf | 50/150/300/400 pF selectable |
| 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 |
| Output level | Balanced XLR and single-ended RCA outputs |
Source: project-audio.com (verified 2026-08-12). Pro-Ject's own product page details four selectable gain steps (40/45/60/65dB, +6dB via XLR), separate MM/MC SNR figures, <0.3dB RIAA accuracy, four-position capacitive loading (50/150/300/400pF), a 20Hz/18dB-octave subsonic filter, and per-mode THD figures. The page did not display a US list price, and Pro-Ject does not sell direct, so priceUsd is left null rather than inferred from the sibling non-balanced S3 model.
Frequently asked questions
How much does the Pro-Ject Phono Box S3 B cost?
The Pro-Ject Phono Box S3 B has no published US price as of 2026-08-12.
What are the Pro-Ject Phono Box S3 B's key specs?
Pro-Ject Phono Box S3 B (Pro-Ject Audio Systems): cartridge support MM and MC, 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), riaa accuracy <0.3 dB (20 Hz - 20 kHz), input capacitance pf 50/150/300/400 pF selectable. Full sourced spec sheet verified 2026-08-12.
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