Pro-Ject Phono Box S3 B - Tube-based Phono Amplifier with Balanced Dual Mono Design
-
Shipping Information
Orders placed before 3 PM on weekdays are shipped the same day - Free shipping on orders over 1000:- (within Sweden)
-
Multiple payment options
Pay easily with Klarna, Apple Pay, Google Pay, Card, Paypal etc
Pro-Ject Phono Box S3 B - Tube-based Phono Amplifier with Balanced Dual Mono Design
Experience a new level of vinyl sound with the Pro-Ject Phono Box S3 B – a compact and fully balanced phono preamplifier that combines high-end technology with an attractive price. This model in the S3 series introduces Pro-Ject's innovative True Balanced Connection, delivering significantly lower noise floor, better dynamics, and a more open, detailed soundstage. Perfect for audiophiles who want to unlock the full potential of their turntable with both Moving Magnet (MM) and Moving Coil (MC) cartridges.
The Pro-Ject Phono Box S3 B is handmade in Europe and built with a fully discrete circuit without op-amps, providing a clean and symmetrical signal path with semi-passive RIAA equalization.
Why choose the Pro-Ject Phono Box S3 B balanced phono preamplifier?
With support for True Balanced connection via mini XLR, you get a completely noise-free signal transmission – especially effective with MC cartridges and balanced cables. In modern homes with a lot of electromagnetic interference from WiFi, Bluetooth, and household appliances, noise is effectively filtered out for a quieter and more engaging vinyl experience.
Main features and benefits:
- True Balanced Connection – 5-pin mini XLR input for a fully balanced signal path and maximum noise reduction
- Support for two turntables – connect two cartridges simultaneously with individual settings saved in memory
- Fully discrete circuit design – no op-amps, only selected components for superior symmetry and sound quality
- Flexible cartridge matching – adjustable impedance (10-47k ohms) and capacitance (50-400 pF) directly on the front panel
- Built-in subsonic filter – 20 Hz / 18 dB per octave against low-frequency interference and rumble
- Robust European construction – steel and aluminum chassis for high rigidity and effective shielding
- Balanced and unbalanced outputs – both RCA and XLR for compatibility with all amplifiers
Technical specifications:
- Gain: 40 / 45 / 60 / 65 dB (+6 dB via XLR output)
- Input impedance: 10 / 50 / 100 / 1k / 47k ohms
- Input capacitance: 50 / 150 / 300 / 400 pF
- Signal-to-noise ratio: Up to 110 dB (A-weighted, MM) / 90 dB (A-weighted, MC)
- THD (total harmonic distortion): <0.001% (MM) / <0.005% (MC)
- RIAA equalization accuracy: <0.3 dB (20 Hz–20 kHz)
- Inputs: 1 × 5-pin mini XLR (balanced), 1 × pair RCA (unbalanced)
- Outputs: 1 × pair RCA, 1 × pair XLR
- Power supply: 18 V / 500 mA DC (external power supply included)
- Dimensions (W × H × D): 206 × 55 × 153 mm
- Weight: 930 g (without power supply)
Shop for over 990 SEK and we’ll ship for free!
If you order before 3 PM on weekdays, we will ship the same day, provided the item is in stock. Normal delivery time is 1-5 business days, but during high order volumes or for certain products, delivery may take longer. If any of the items you ordered are out of stock, we will notify you as soon as possible.
We want you to be 100% satisfied with your purchase. Items can be returned or exchanged within 14 days of delivery. For exchanges or purchases of a new item in connection with a return, we cover the return shipping cost. Please note, however, that there are exceptions where free return shipping does not apply, such as large and heavy items or expensive shipping relative to the item’s value. This is decided on a case-by-case basis.
What does our stock status mean?
In stock - Ships immediately the same day if ordered before 3 PM (weekdays)
3-8 days - In stock at supplier and ordered immediately
4-12 days - In stock at supplier and ordered immediately
We offer a warranty of at least 2 years on all products, and some items come with an extended warranty of up to 5 years. This way, you avoid costly insurance and can feel secure as a customer. If any issues arise during the warranty period, you are welcome to contact us, and we will resolve it quickly and smoothly.
- Versatile payment options and secure transactions. Invoice or installment payment with Klarna, card payment, etc.
- Fast deliveries: Orders received before 3 PM are shipped the same day
- Secure product delivery with reliable logistics partners (DHL & UPS)
- Price guarantee to ensure our customers get the best possible deal
- Fast & professional customer service via email and phone. (email responses within 24 hours)