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Category: Pre-Amplifiers

Pro-Ject Phono Box S3B Balanced Phono Preamplifier

The Pro-Ject Phono Box S3 B is a high-performance phono preamplifier designed for audiophiles seeking a balanced and versatile solution for their vinyl playback systems. Priced at approximately $499, it offers a range of features that enhance the analog listening experience.

Key Features:

  • Dual-Mono Design: The S3 B employs a fully symmetrical and discrete dual-mono architecture, ensuring optimal channel separation and minimal crosstalk. Pro-Ject Audio USA

  • Balanced & Unbalanced Inputs: It provides a 5-pin mini XLR balanced input and a pair of RCA unbalanced inputs, allowing flexibility in connecting various turntables. Pro-Ject Audio USA

  • Adjustable Loading Options: Users can fine-tune the input impedance (10, 50, 100, 1k, 47k ohms) and capacitance (50, 150, 300, 400 pF) to match their cartridge specifications, optimizing performance. project-audio.com

  • Gain Settings: Offers four gain levels (40, 45, 60, 65 dB), with an additional 6 dB boost when using the XLR output, accommodating both moving magnet (MM) and moving coil (MC) cartridges. project-audio.com

  • RIAA Equalization Accuracy: The unit maintains an RIAA equalization curve accuracy of less than 0.3 dB across the 20 Hz to 20 kHz frequency range, ensuring precise tonal balance. project-audio.com

  • Subsonic Filter: A 20 Hz subsonic filter with 18 dB/octave slope helps eliminate low-frequency rumble and unwanted vibrations. project-audio.com

  • Build Quality: Housed in a robust aluminum enclosure, the S3 B offers excellent shielding against electromagnetic interference, contributing to its low noise and distortion performance.

Description

Phono Box S2 Ultra – Luxury and audiophilia combined!

The Phono Box S2 Ultra is like no other phono preamplifier in its segment. The incredible success of our Phono Box Ultra 500 incited us to introduce this marvelously sounding phono preamp into our regular S2 line. The solid metal casing protects against interference, and the internal design remains as spectacular as before.

We are offering a fully discrete, OpAmp-less design, which enabled us to realize an incredibly harmonious sound. On top of leaving out operational amplifiers, we decided to use polystyrene capacitors, which significantly contribute to the high-end sound of the Phono Box S2 Ultra. These capacitors are known amongst audiophiles as the holy grail for phono preamplifiers. The split RIAA equalization enables a pinpoint accurate representation of the RIAA curve, a luxury many other phono preamps do not possess.

Warranty:

1-year manufacturer’s warranty

Features:

  • Audiophile Performance
  • No Operational Amplifiers used
  • Audiophile-grade polystyrene capacitors
  • Precise split RIAA equalisation
  • Switchable Subsonic filter –18 dB @ 20Hz
  • Switchable input impedance/capacitance
  • Four adjustable gain levels
  • Solid metal casing protects from interference
  • Outstanding sound quality

True High-End For the New Entry-Level

The Phono Box S3 B comes in completely new casework. The bigger size enabled us to bring a completely new feature set that had never been seen before. The new steel & aluminium case also offers very high rigidity and isolation against outside interferences, which is essential for the new technology inside. Connect up to two turntables simultaneously – all parameters for each input get stored in the memory. You can perfectly match the Phono Box S3 B to a wide variety of cartridges. Use the gain setting to accurately match the output to other sources like CD players or streaming devices. Ultra-low values like 50 pF or 10 ohms allow you to account for all situations.

The New Phono Box S3 B

The Phono Box S3 B is an entry-level phono preamplifier that offers a fully balanced design in a neat, small package. We’ve packed this tiny chassis to the brim with high-end features. One of those is our new True Balanced Connection. At Pro-Ject, balanced connections were exclusive to our RS range of products until now. The Phono Box S3 B brings those features to an incredible new entry level.

Balanced By Nature

Cartridges are balanced signal transducers by nature! Due to the internal wiring of MM cartridges, you’ll need to upgrade your turntable with an MC cartridge to access the entirety of that balanced signal. Together with our new True Balanced Connection cables, you’ll be able to access high-end features that were previously only available on the most expensive of phono stages. And the best of all: any Pro-Ject turntable with RCA, miniXLR or 5P outputs can do it!

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