SKU: 96895840250

Pro-Ject Phono Box S3 B Phono Preamplifier - Open Box

Sale price$251.55 Regular price$279.50
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Ships within 48 hours · Estimated delivery Aug 15 - Aug 20

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Description

Pro-Ject Phono Box S3 B Phono Preamplifier - Open BoxCondition Report: Open Box In new condition, tested and working. Very minor marks on front panel chassis. Box in decent shape. Includes power supply and manual. Box: Yes Shipping Included SN: 22A009891 Product Information: High End Features at an Affordable Price The Phono Box S3 B is a phono preamplifier that offers a fully balanced design in a neat, small package. Pro Ject have packed this tiny chassis to the brim with high end features. One of

Condition Report:

Open Box

In new condition, tested and working. Very minor marks on front panel/chassis.

Box in decent shape. Includes power supply and manual.

Box: Yes - Shipping Included 

SN: 22A009891

Product Information:

High End Features at an Affordable Price

The Phono Box S3 B is a phono preamplifier that offers a fully balanced design in a neat, small package. Pro-Ject have packed this tiny chassis to the brim with high-end features. One of those is their new True Balanced Connection. When used in combination with a Pro-Ject turntable with a 5-pin balanced output and 5P to XLR cable, you can achieve a totally balanced connection, minimising noise and delivering a breathtaking analogue signal.

Until now, balanced connections were exclusive to the RS range of products. The Phono Box S3 B brings those features to more affordable products.

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 optimise the signal-to-noise ratios, feeding the semi-passive, RIAA equalisation stage with a clean signal to work on.

Shipping Notes
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Exchange/Return Notes
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  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 96895840250

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4.2 ★★★★★
Based on 18 reviews
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Verified Purchase
Leanne Hill
Pawtucket, US
★★★★★ 5
Fits perfectly, good value
Size: normal
Fits on my eufy perfectly! Now I have a spare set and can wash one. Not too expensive, so I won’t feel guilty when it’s time to throw them away
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 6, 2024
M
Verified Purchase
marcel abraham
Massapequa, US
★★★★★ 4
Que las nesesito
Size: normal
Son yguales ala original pero el precio es muy exagerado
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2024
L
Verified Purchase
L. S. Brodsky
Dallas, US
★★★★★ 5
Absolutely amazing! Working flawlessly for over a month, so far.
Color: White
I am very pleased with the performance so far. The strengths are the ease of setup, the accuracy of its mapping and carpet/floor recognition, the quality of its cleaning and mopping, and the entertainment of just watching. There are weaknesses. The documentation is sparse and pretty useless and tech support has been ghosting me..no responses. So hunt and peck with the App, mostly. Hard to really customize by trial and error. While it vacuums very well, it does not empty as well, really requiring the owner to manually empty the dust bin. No big deal. Maintenance recommendations are hidden on the website and I suspect it is advisable to do some maintenance after every use. The strengths win, however.
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Reviewed in the United States on May 23, 2026
T
Verified Purchase
TLC
Bozeman, US
★★★★★ 5
User friendly, Pet Hair Approved, Quite Powerful Robot Vacuum
Color: White
We prviously had an Eureka E10 vacuum and mop robot for 4 years. We had no idea what we were missing until we purchased this Narwal Freo X10 Pro. It maps very fast. It is extremely quite. The vacuum then mop with a refreshed mop head solution is much better than dragging around a robot mop pad with no way to clean it without removing and washing it. We have 3 Australian Sheppards that shed alot. This was the number one concern, whereas the prvious unit needed daily attention. Not a single hair tangle in the floating rotating brush of this unique Narwal Freo X10 Pro Robot vacuum. 4 months of no robot management is wonderful. The application was easy to use with a ton of customizable options. The AI option to recognize various floor types and throw rugs ensures a complete clean and quick simple setup. Lastly the price vs product was very reasonable. Great product! After spending many months researching, we are glad we made this investment.
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Reviewed in the United States on December 5, 2025
A
Verified Purchase
A Happy Atheist
Lexington, US
★★★★★ 1
After five months, it's basically a brick
Color: White
We've had this robot for five months, and it isn't durable. It worked fine for a couple months. But now it works fine for maybe 20 minutes and then just starts spinning around or going back in forth in the same area wasting its battery. The endless troubleshooting does not help. Cleaning all the sensors, resetting the robot, remapping the house ... Nothing helps. It is only being used in about 1100 sq ft of total space, so it's just not that complicated. It's been trying (and failing) to vacuum our smallish living room for nearly five hours, after several resets/etc. Back when it did function, the vacuum is rather loud if you want it to actually pick up anything big enough to see. The vacuum and mop are both terrible at inner corners, and the intersection between rugs and hardwood flooring is a total miss. There's like a 12" strip along all rugs where mopping never occurs. Definitely not a machine to be used without supplemental sweeping and mopping. The machine insists on starting rugs at the corner, so it pulls up even pretty heavy rugs sometimes. It's sucks up items like socks instead of avoiding them. Also, the machine has never successfully left alone no-vacuum rugs or no-go areas, so some rooms (like with high pile rugs or Christmas tree stands) just don't work without physical barricades. Really, really makes me miss the old reliable roombas...
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Reviewed in the United States on April 21, 2026

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