Pro-Ject Phono Box S3 B phono preamplifier

MM and MC phono preamp

Unbalanced and balanced inputs and outputs

RCA and XLR

Adjustable resistance, capacitance and gain

Subsonic filter

Know more

Manufacturer : PRO-JECT

399,00 €

In stock
Shipped within 3 to 5 working days Available within 1 or 2 weeks

+ -

Need help ?
  • An attentive team

  • Quality products

  • Secure and fast shipping

  • No overcharged 3x payment from 1000€

Description

The Pro-Ject Phono Box S3 Balanced phono preamplifier heralds the new range of fully balanced Pro-Ject phono preamps, offered at an affordable price.

PRO-JECT PHONO BOX S3 B: CHASSIS


The Phono Box S3 B is a high-end phono preamplifier enclosed in a high-quality sandwich steel/aluminum casing, offering high rigidity and isolation against external interference. Its larger dimensions compared to the Pro-Ject Phono Box S2 range allow for a more comprehensive set of connections.

PRO-JECT PHONO BOX S3 B: FRONT PANEL


On the front panel, several mini-push buttons allow for multiple adjustments. It's easy to adjust the resistive load (10, 50, 100, 1k, and 47 kohms) as well as the capacitive load (50, 150, 300, and 400 pF).

The Phono Box S3 B also allows for gain adjustment with values suitable for pairing with all MM and high-output MC cartridges, and nearly all low-output MC cartridges. RCA output gains are 40, 45, 60, and 65 dB, with an additional 6 dB for XLR output. Additionally, there's a subsonic filter to reduce low-frequency rumble, activated at 20 Hz with 18 dB/octave slope. You can select between balanced or unbalanced input.

PRO-JECT PHONO BOX S3 B: BACK PANEL


On the back, there's a pair of RCA inputs and a grounding terminal for the turntable. These inputs are mirrored by a unique symmetrical mini XLR 5-Pin Stereo socket. Outputs are available in both unbalanced RCA and balanced XLR formats. The 18V DC power is supplied by an external power adapter.

PRO-JECT PHONO BOX S3 B: TECHNOLOGY


The Phono Box S3 B uses entirely discrete technology composed only of transistors and passive components. The amplification stage employs no integrated circuits. The gain stage is fully balanced, and the RIAA equalization stage is semi-passive. Components are of excellent quality with low tolerances. A fully balanced gain stage helps increase signal-to-noise ratio and minimizes interference.

PRO-JECT PHONO BOX S3 B: TESTING AND LISTENING


As always with Pro-Ject, the reproduction is precise, detailed, and very dynamic. Timbres are beautiful and accurate.

The Pro-Ject Phono Box S3 B offers reproduction with exceptionally low noise and virtually no distortion. Detail retrieval is very high, providing an accurate vinyl reproduction.

It also delivers deep and informative bass, smooth and nuanced highs, and a precise and realistic soundstage for a phono preamp in this price range.

The main advantage of this preamp is its ability to exploit a balanced scheme. If you have an amplifier equipped with an XLR input, the Pro-Ject Phono Box S3 Balanced is an excellent choice.

Franck

Input impedance: 10, 50, 100, 1k, 47k ohms

Input capacitance: 50, 150, 300, 400 pF

RCA Out gain: 40, 45, 60, 65 dB

XLR Out gain: 46, 51, 66, 71 dB

MM signal-to-noise ratio (40dB): 103dBV, 110dBV - ‘A’ weighted

Signal-to-noise ratio MC (60dB): 85dBV, 90dBV - ‘A’ weighted

THD at 1kHz: <0.001% MM, <0.005% MC

THD (20Hz-20kHz): <0.008% MM, < 0.01% MC

Accuracy of RIAA equalisation curve: <0.3dB / 20Hz - 20kHz

Subsonic filter: at 20Hz with 18dB/octave

Inputs: 1x mini XLR 5-pin / 1x pair of RCA phono sockets

Outputs: 1x RCA pair, 1x XLR pair

DC power supply: 18 V/500 mA

Power consumption: 18 V/170 mA DC, <0.5 W standby

Dimensions: 206 x 55 x 153 mm

Weight: 930g (without power supply)

Customer reviews
(1 review)

Customer reviews

5/5
02/27/2024

Impeccable

Ce préampli phono est très bon et simple d'utilisation.
Le son est doux les égus clair il a un très bonne équilibre.
Utiliser avec une pro-ject X2B cellule mc ortofon red et une Thorens TD 190-2 cellule nagaoka mp 110.
Très bon résultat.
Petit souci sur le produit traité très rapidement avec professionnalisme.
Merci a Franck.

+ Read all reviews

Write a review

Pro-Ject Phono Box S3 B phono preamplifier

Pro-Ject Phono Box S3 B phono preamplifier

MM and MC phono preamp

Unbalanced and balanced inputs and outputs

RCA and XLR

Adjustable resistance, capacitance and gain

Subsonic filter

Recommended products Our tips & advice