SKU: 8081289450

Pro-Ject Phono Box S3B Phono Preamplifier

Sale price$265.50 Regular price$295.00
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Description

Pro-Ject Phono Box S3B Phono PreamplifierPhono Box S3 B Entry Level True Balanced Phono Stage A New Access to High End Features. 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. Weve 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

Phono Box S3 B

Entry-Level True Balanced Phono Stage

A New Access to High-End Features.

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.

True High-End For the New Entry-Level

Our Phono Box S3 B comes in complete new casework. The bigger size enabled us to bring a completely new feature set that was never seen before in this price range. 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.

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!

FULLY DISCRETE AND SYMMETRICAL GAIN STAGE

The new Phono Box S3 B gain stage uses a fully discrete layout. A discrete circuit is composed of disparate electronic components, and individual devices. The amplifier section is built of single parts and doesn‘t use any integrated circuits! That makes for an extended and more costly design process but results in the best sound quality. The fully symmetrical gain stage can optimize the signal-to-noise ratios, feeding the semi-passive, RIAA equalisation stage with a clean signal to work on.

TRUE BALANCED CONNECTION

The symmetrical design is the fundamental standout feature! Connect your turntable via the 5-pin mini XLR cable and enjoy the benefits of a balanced signal path. A truly balanced gain stage can extract the final musical information, effectively filtering out any noise from interferences stemming from our noisy, modern homes (household appliances, wifi & Bluetooth, power cables, audio amplifiers).

High-End Features

For the Entry-Level

Steel & aluminium casework. Fully discrete & symmetrical gain stage. Balanced in & outputs. Cartridge loading options on front panel.

True Balanced

Unleash the full power

Phono Box S3 B is ready for our new True Balanced Connection. Single-ended RCA connections, quite literally, only use half of your cartridge's output. With one of our new True Balanced phono cables and an MC cartridge you'll hear details and dynamics, previously exclusive to only the most expensive phono stages.


Handmade in EU

Since 1991

Made in Europe by technicians, engineers and designers with decades of experience. Expert craftsmanship. Sustainable products with a long lifetime. Audiophile audio performance.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 8081289450

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4.7 ★★★★★
Based on 12 reviews
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Yaya
Port Orchard, US
★★★★★ 5
great product
Color: White
This handheld vacuum sealer is a game changer for food storage! It’s compact, easy to use, and works quickly to seal bags tight. The included reusable bags are durable and save money over time. Keeps food fresh much longer and is perfect for meal prep. Highly recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 19, 2026
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Verified Purchase
Carmen
Port Orchard, US
★★★★★ 4
Fast shipping on replacement item.
Color: White
It worked well for around 20 uses and then it worked intermittently. Only had the sealer for about a week, so returned it and got a replacement, it works (so far, so good) but have not used it much yet. The replacement came within two days after requesting it...
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Reviewed in the United States on May 25, 2026
B
Verified Purchase
B. Caywood
Chelsea, US
★★★★★ 5
Perfect convenient sealer
Size: Vacuum Sealer + 30 Bags
Great vacuum sealer. So easy to use. I have a large sealer that I've used for years and needed something that was easier and quicker. It is light weight and fits nicely in a drawer and is so convenient to take out and use for saving my food in the refrigerator or freezer. The bags are reusable so I can use it for things like cheese and open the bag, take some out and reseal the bag without wasting any cheese and it is ready to store again. It performs as well as my large sealer with great suction. I recommend it highly!
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Reviewed in the United States on April 27, 2026
C
Verified Purchase
Cal
Los Angeles, US
★★★★★ 5
Great product!!!
Size: Vacuum Sealer + 30 Bags
Wow! This is a great product! The bags are a great size to store all types of food. The vacuum sealer is lightweight and so easy to use. I seal the bag, take what I need, then reseal the bag. It works very quickly too.
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Reviewed in the United States on May 25, 2026
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Verified Purchase
Nicholas Carano
Boise, US
★★★★★ 4
Good value for the money would buy again
Size: Vacuum Sealer + 30 Bags
This works great for some of the smaller items, especially whole fruits and vegetables, cheeses, meats etc. Like other vacuum sealers, anything wet is going to present a challenge. Overall very happy with this especially the convenience. Battery life on charge seems to last a relatively decent time. At first I thought it would quit working because I couldn't get any draw, however, realized that the cap had turned and needed to be repositioned. Almost acted like a off switch! But working fine chopped that one up to user error haha. As far as the reusable bags, pretty satisfied with that as well.
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Reviewed in the United States on April 26, 2026

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