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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Jonathan Helm
Draper, US
★★★★★ 5
Great fit, true to size, comfortable, professional, good quality
Color: Dark Grey, Size: X-Large
I’m 6’4, 220lb with an athletic build. Great fit, good around the chest and sleeves and shirt are perfect length. Great shirt for work or a night out. Well made and comfortable! I’ll be ordering a few more colors without a doubt.
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Reviewed in the United States on May 28, 2026
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DSM
Cuba, US
★★★★★ 4
Nice shirts with inconsistent fit
Color: Light Grey, Size: X-Large
I received the black version of this as a gift which I really liked and I got a lot of compliments for it. So I purchased this light gray but it does not fit as well. It's a little tighter and a little shorter. I was hoping they all would be the same fit but apparently they are not.
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Reviewed in the United States on January 31, 2026
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Larry Newell
Charlottesville, US
★★★★★ 5
Great Shirts…I’ve Bought most Colors.
Color: White-red, Size: Large
I’ve bought a dozen of these shirts in different colors in the last 10-12 months. Very nice material and launders and/or dry cleans great. Outstanding price for a nice looking shirt!
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Reviewed in the United States on May 28, 2026
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PARRIS CHARGOIS
Lexington, US
★★★★★ 5
This shirt brings mens dress shirts to a new level. My husband wears it with slacks or jeans.
Color: Army Green, Size: X-Large
Kudos to whoever designed and manufactured this shirt! It is stylish with interesting details. It can be gently washed in your washing machine and dried on a warm setting. The fabric is next level, feels like cotton with a tech stiffness to it. It has a dull sheen. I'd say "give it a shot". I ordered one and it was sooo handsome that I got my husband some other colors. Bonus.....The cut is generous enough to make a bit of a paunch disappear.
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Reviewed in the United States on May 14, 2026
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Ron
Cuba, US
★★★★★ 5
Well-made shirt.
Color: Light Grey, Size: Small
Material doesn’t feel light or flimsy. Very soft and fits well. Not too loose or too tight. Plan to purchase another one down the road.
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Reviewed in the United States on May 9, 2026

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