Pro-Ject Phono Box S3 B Phono Preamps
Pro-Ject Phono Box S3 B Phono Preamps
Pro-Ject Phono Box S3 B Phono Preamps
Pro-Ject Phono Box S3 B Phono Preamps
Pro-Ject Phono Box S3 B Phono Preamps
Pro-Ject Phono Box S3 B Phono Preamps
Pro-Ject Phono Box S3 B Phono Preamps
Pro-Ject Phono Box S3 B Phono Preamps

Pro-Ject Phono Box S3 B

Pro-Ject  /  Phono Preamps

PRO-PHOBOX-S3-BXX-BLK

RRP $699.00 $629.00 Save 10%
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We take pride in our customer service and shipping times. Most products will ship within 1-2 business days. If there are any potential delays with products in your order, we will contact you.

All orders over $79 include Free Shipping Australia Wide. For orders under $79 we shipping cost is $15.

We use a variety of shipping methods depending on the types of items purchased and their delivery location. This helps to ensure your items arrive safely and in a timely manner. If you are on a tight deadline or would like to know an estimated delivery date for your order, contact our friendly staff and they will be happy to assist.

Orders will usually take between 1-6 days for delivery, depending on your location and shipping method.

If your order has not been delivered within 7 days of shipping we recommend you reach out to us directly to investigate with Australia Post / Courier.

If for any reason you haven't followed up with us within 30 days of shipping, we'll be unable to guarantee your delivery of your item unless it has been returned to sender. 

Balanced Phono Performance at the Entry Level

The Pro-Ject Phono Box S3 B is an entry-level phono preamplifier built around a fully balanced design in a compact steel and aluminium case. It brings Pro-Ject's True Balanced Connection, once reserved for the flagship RS range, to a far more accessible level. Two turntable inputs, front-panel cartridge loading and a fully discrete gain stage make it a flexible hub for a vinyl system.

Why You'll Love It

  • True Balanced Connection. Paired with an MC cartridge and a balanced cable, the 5-pin mini XLR input opens a fully balanced signal path that filters out interference from household electronics, Wi-Fi and power cables.
  • Two turntables, stored settings. Connect up to two decks at once, with all loading parameters for each input saved to memory, so switching between them needs no re-adjustment.
  • Front-panel cartridge matching. Impedance and capacitance loading are set from the front of the unit, down to ultra-low values such as 10 ohms and 50 pF, to match a wide range of cartridges.

Under the Hood

  • Fully discrete, symmetrical gain stage. The amplifier section is built from individual components with no integrated circuits, feeding a clean signal to the RIAA stage for a strong signal-to-noise ratio.
  • Semi-passive RIAA equalisation. A semi-passive equalisation stage handles the RIAA curve accurately, quoted at under 0.3 dB across 20 Hz to 20 kHz.
  • Rigid steel and aluminium case. The heavier casework adds rigidity and shields the sensitive circuitry from outside interference. Handmade in Europe.

CHT Insider Verdict

The Phono Box S3 B is aimed at listeners ready to move past a basic built-in phono stage. Balanced in and outputs, a discrete gain stage and dual-turntable support are unusual at this level, and the payoff is clearest with a moving coil cartridge on a balanced cable. Owners of RCA-only turntables still gain a well-built, quiet and adjustable phono stage with room to grow into balanced operation later.

Pro Tip: To hear what the balanced design offers, pair the S3 B with a moving coil cartridge and a Pro-Ject True Balanced cable into the 5-pin mini XLR input. A standard moving magnet cartridge over RCA uses only half of that signal path.

Specifications

Gain and Loading
Input impedance 10, 50, 100, 1k, 47k Ω
Input capacitance 50, 150, 300, 400 pF
Gain 40, 45, 60, 65 dB (+6 dB using XLR outputs)
Performance
Signal-to-noise ratio (MM, 40 dB) 103 dBV, 110 dBV - A-weighted
Signal-to-noise ratio (MC, 60 dB) 85 dBV, 90 dBV - A-weighted
THD at 1 kHz <0.001% MM, <0.005% MC
THD (20 Hz - 20 kHz) <0.008% MM, <0.01% MC
RIAA accuracy <0.3 dB / 20 Hz - 20 kHz
Subsonic filter 20 Hz with 18 dB/octave
Connections
Inputs 1x 5-pin mini XLR, 1x pair RCA phono
Outputs 1x pair RCA, 1x pair XLR
Power
Power supply 18 V / 500 mA DC
Power consumption 18 V / 170 mA DC, <0.5 W standby
General
Dimensions (W x H x D) 206 x 55 x 153 mm (164 mm with sockets)
Weight 930 g (without power supply)
Available finishes Black, Silver
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Testimonials

★★★★★

CHT Solutions has been very prompt to respond and ship the items. I will never hesitate to buy from them again. More power to CHT Solutions!

Richard Y.
Thornleigh, NSW
★★★★★

CHT delivery was incredibly fast, Many thanks all for such an easy purchase process and super fast delivery. 5 stars from me

Chris N.
Malaga, WA
★★★★★

Buying from CHT Solutions was easy and their price was great and I would recommend then to anyone seeking good Hi Fi equipment.

John L.
Woonona, NSW
★★★★★

Fast delivery and great products. Would recommend them to anyone needing great service for sound advice.

Oscar F.
Truganina, VIC
★★★★★

CHT delivered the unit to South Australia within a couple of days. Amazing! Their phone customer service was professional and courteous. Will happily purchase from them again

Robert F.
Tranmere, SA