SKU: 60209279541

Pro-Ject Tube Box S3 B Phono Pre-amplifier

Sale price$465.30 Regular price$517.00
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Ships within 48 hours · Estimated delivery Jul 19 - Jul 24

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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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4.4 ★★★★★
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Karen
San Leandro, US
★★★★★ 5
Overall very satisfied.
Color: Walnut
The TV stand is very simple to assemble and most people should be able to complete it in a little while, as several steps may require a second person. The unit itself is very sturdy and a little larger than I expected. The sliding "door" does require a little force to move, but furniture wax should do the trick nicely.
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Reviewed in the United States on March 9, 2026
A
Anna Marie
Phoenix, US
★★★★★ 5
Beautiful quality made tv stand.
Color: Walnut
Beautiful TV stand. Easy to assemble. I took a chance on this stand matching the new end tables I got from a different store and manufacturer. They match perfectly. I couldn't be happier with the color of the wood, the quality construction and minimalist clean look. It looks great in my living room.
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Reviewed in the United States on March 9, 2026
K
kawaiikitty
Lexington, US
★★★★★ 5
Modern and sleek
Item Package Quantity: 1
I haven't assembled this yet but I'm really looking forward to using it as a nightstand - the style looks really sleek and modern and it seems like it'll fit perfectly in a small space. It's worth noting that it's made of particle board rather than solid wood, which is pretty standard at this price point, so just go in with that expectation. The design looks really clean and the storage shelf underneath is a practical bonus. Hoping it holds up well over time but based on first impressions and the overall look, I think it's going to be a really nice and affordable addition to the bedroom!
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Reviewed in the United States on May 22, 2026
A
Ad Nauseam Pontificator
Birmingham, US
★★★★★ 3
Decent looking but not very sturdy
Item Package Quantity: 1, Item Package Quantity: 1
This table looks pretty nice once it is fully assembled and I appreciated that all the parts were clearly labeled. There were no missing parts, and in fact there were some extras. That made the instructions easier to follow and helped speed things up. From unpacking everything to finishing assembly it took me around 30 minutes. There are a few quality issues though. The black finish feels very thin and started chipping around the screws while I was tightening them down. It does not seem like it will hold up very well over time if it already shows wear during assembly. The biggest issue is the stability. Even after tightening everything, the table still feels a little shaky. The set screws near the bottom base pieces do not stay tight for very long and kept loosening while I was putting it together. I assembled it by myself and the legs kept shifting and falling over because those connections would not stay secure. This is definitely easier if you have another person helping. The packaging also could have been better. The box had a lot of particle board dust and debris inside, so unpacking everything was a bit messy. The item description says it can hold up to 66 pounds, but after putting it together I personally would not trust it with anywhere near that much weight. I originally planned to use it for a small aquarium that weighs around 20 pounds, and even that made me uncomfortable once I saw how flimsy the table felt assembled. I think it is better suited for lightweight items and I'd only store something like a couple of books or a lightweight lamp or a couple of picture frames. Overall it is not terrible and it does look reasonably attractive, but the build quality does not really match the current fifty dollar price in my opinion. It should be priced lower. It works for light decorative use, but I would not expect anything especially sturdy or long lasting.
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Reviewed in the United States on May 26, 2026
K
Kathy
Alexandria, US
★★★★★ 5
Solid table
Item Package Quantity: 1
Good size! Would be easier with 2 people putting in together- if you follow directions! Cute table!
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Reviewed in the United States on May 24, 2026

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