Pro-Ject Tube Box S3 B Phono Pre-amplifier
SKU: 60209279541

Pro-Ject Tube Box S3 B Phono Pre-amplifier

Sale price$465.30 Regular price$517.00
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Description

Pro-Ject Tube Box S3 B Phono Pre-amplifierBalanced audiophile tube phono stage Audiophile tube warmth The Tube Box S3 B is a audiophile phono preamplifier that brings true analog warmth to your vinyl playback. It features a fully symmetrical and discrete gain stage, balanced 5 pin mini XLR input, and balanced XLR outputs. Adjust settings easily from the front panel, and enjoy clean, interference free performance thanks to its robust aluminium chassis. Available in silver or black and made in

Balanced audiophile tube phono stage

Audiophile tube warmth

The Tube Box S3 B is a audiophile phono preamplifier that brings true analog warmth to your vinyl playback. It features a fully symmetrical and discrete gain stage, balanced 5-pin mini XLR input, and balanced XLR outputs. Adjust settings easily from the front panel, and enjoy clean, interference-free performance thanks to its robust aluminium chassis. Available in silver or black and made in Europe, the Tube Box S3 B is a compact yet powerful upgrade for any serious vinyl setup.

"B" stands for balanced

The symmetrical design is the real standout feature! Connect your turntable with the 5-pin mini XLR cable & profit of the balanced signal path. Symmetrical, or also called balanced, transmissions consist of a hot and a cold (also called + and -) signal. Both signal chains effectively carry the same musical information. A true balanced gain stage can now extract the final musical information out of the +/- signals and subtract, remove, all noise that could potentially be added along the transmission. As there are two separate signal chains, we also needed two individual amplifier sections. Definitely unseen in this price range & the best and cleanest amplifier for your phono signal!

Features

  • 5-pin mini XLR balanced input
  • Balanced XLR outputs
  • Fully symmetrical & discrete gain stage
  • Easy settings adjustment on the faceplate
  • 2x ECC83 tubes (replaceable)
  • MM & MC capable
  • Dual mono design
  • Semi-passive RIAA equalisation
  • Superior low noise / low distortion
  • Aluminium casing protects against interference
  • Available in silver or black
  • Made in Europe

Technical Specifications

  • Tube assembly: 2x ECC83 (12AX7)
  • Input impedance: 10, 50, 100, 1k, 47k ohms
  • Input capacitance: 50, 150, 300, 400 pF
  • Gain (+ 6dB using XLR Out sockets): 40, 45, 60, 65 dB
  • Signal / Noise ratio MM (40dB): 97dBV, 105dBV - 'A' weighted
  • Signal / Noise ratio MC (60dB): 83dBV, 88dBV - 'A' weighted
  • THD at 1 kHz: <0,005% MM, < 0,01% MC
  • THD (20Hz-20kHz): <0,1% MM, < 0,03% MC
  • RIAA-equalization curve accuracy: <0,4dB / 20Hz - 20kHz
  • Subsonic filter: at 20Hz with 18dB/octave
  • Input: 1x 5-pin mini XLR / 1x pair RCA phono sockets
  • Line-level output: 1x pair RCA, 1x pair XLR
  • Power supply DC: 18V/1000mA
  • Power consumption: 18V/800mA DC, <0.5 W in standby
  • Dimensions: 206 x 81 x 153 (164 with sockets) mm (W x H x D)
  • Weight: 1010g without power supply
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: 60209279541

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c'est la vie🎉😘
Grantham, US
★★★★★ 5
Great trunk bed cargo net holds a ton in place
Size: 59 inches, Size: 59 inches
Just what I was looking for. Easy to install and very easy to reposition in your truck bed. Great purchase would recommend holds all my groceries and anything else I put in well constructed strong. This is great cause your items won’t slide all over the truck bed when you’re driving, it holds a bunch of bags or boxes. It’s so strong my husband put sandbags inside the compartments and still great. I do highly recommend this net organizer it will also work on the back of an SUV.
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Reviewed in the United States on September 20, 2022
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Amazon Customer
Alexandria, US
★★★★★ 4
Truck bed storage
Size: 59 inches
Great net, perfect storage space. Sticky mounts are useless! Be prepared to buy some heavy duty double sided outside tape to keep them in place but outside of that 0 complaints,
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Reviewed in the United States on August 15, 2025
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D. W.
Los Angeles, US
★★★★★ 5
Best Bang for your Buck
Size: 59 inches, Size: 59 inches
Bought this almost a year ago for my 2018 silveraldo 1500 and it's very handy for big groceries shopping like Costco. I have a mat at the bottom just in case there's some kind of liquid and I dont want my groceries touching it. Easy install, store a good amount of stuff, and pretty sturdy
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Reviewed in the United States on February 1, 2026
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Nikkycollado
San Leandro, US
★★★★★ 5
Great fit
Nice utility accessories
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Reviewed in the United States on April 24, 2026
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Kitchengal
Cuba, US
★★★★★ 5
I'd buy it again
Size: 59 inches
My pickup is often a grocery getter for me and the horses. I'm short. If stuff slides to the front of the bed it's a pain to get out. This is not a real heavy duty net but it works terrific for me. I was satisfied with the value for price and it's made my life easier!
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Reviewed in the United States on December 18, 2025

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