SKU: 71909055698

PRO-JECT PHONO BOX DS3 B TRUE BALANCED PHONO PRE-AMPLIFIER

Sale price$607.05 Regular price$674.50
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Description

PRO-JECT PHONO BOX DS3 B TRUE BALANCED PHONO PRE-AMPLIFIERPhono Box DS3 B True Balanced, Dual Mono & Fully Discrete Audiophile Phono Stage A New Level of Balance The New Phono Box DS3 B At Pro Ject, balanced connections were exclusive to our RS range of products until now. The Phono Box DS3 B model offers some of the high end features of the Phono Box RS2 at an affordable price and trusted Pro Ject quality. One of those is our new True Balanced Connection. High End Features and Limitless Loading Options The

Phono Box DS3 B

True Balanced, Dual Mono & Fully Discrete Audiophile Phono Stage

A New Level of Balance

 

The New Phono Box DS3 B

At Pro-Ject, balanced connections were exclusive to our RS range of products until now. The Phono Box DS3 B model offers some of the high-end features of the Phono Box RS2 at an affordable price and trusted Pro-Ject quality. One of those is our new True Balanced Connection.

 

High-End Features and Limitless Loading Options

The Phono Box DS3 B employs a steel chassis enveloped by aluminium panels. This construction offers very high rigidity and isolation against interferences, which is essential for the new technology inside. Magnetic wooden side panels are available separately as add-ons. You can connect up to two turntables simultaneously – all parameters for each input get stored in the memory. Perfectly match the Phono Box DS3 B to a wide variety of cartridges. Load impedance can be set continuously via a potentiometer, a system invented by Pro-Ject Audio Systems, to adjust the impedance during playback and assess the impact of different loading options in real-time. No other manufacturer implements this feature as elegantly!

 

Balanced By Nature

Cartridges are balanced signal transducers by nature! Due to the internal wiring of MM cartridges, you'll need a 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 phono stages. And the best: any Pro-Ject turntable with RCA, miniXLR or 5P output can do it!

 

A Technical Deep Dive

The Phono Box DS3 B incorporates a true, fully balanced gain stage design. Whether you're using a single-ended RCA or balanced connection, both times the fully symmetrical gain stage can optimize the signal-to-noise ratios, feeding the fully passive and discrete RIAA equalization stage with the cleanest signal to work its magic on. Entirely split passive equalization allows for better impedance matching and lower deviation from the ideal RIAA curve. The Phono Box DS3 B uses fully discrete audio circuitry. A discrete circuit is composed of disparate, individual electronic components, also called discrete components. Years of experience have proven that even the best Op-Amps do not come close to the neutral, natural, dynamic, and vivid presentations of discrete circuit.

 

True Balanced Connection

The symmetrical design is the fundamental standout feature! Connect your turntable via the 5-pin mini XLR cable or standard XLR cables and enjoy the benefits of our new True Balanced Connection. 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

Limitless Loading

Steel & aluminium casework. Entirely discrete audio circuitry. Fully symmetrical gain stage. Split passive RIAA EQ. Dual mono. Balanced in & outputs. Stepless impedance matching.

 

True Balanced

Unleash the full power

Phono Box DS3 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.

 

 

Technical Specifications

 

Input impedance: Stepless 10 – 1000 ohms or fix 47kOhms
Input capacitance: 50, 150, 300, 400 pF
Gain (+ 6dB using XLR Out sockets): 40, 45, 50, 55, 60, 65 dB
Signal / Noise ratio MM (40dB): 104dBV, 111dBV - ‚A‘ weighted
Signal / Noise ratio MC (60dB): 85dBV, 91dBV - ‚A‘ weighted
THD at 1 kHz: <0,001% MM, < 0,004% MC
THD (20Hz-20kHz): <0,005% MM, < 0,01% MC
RIAA-equalization curve accuracy: < 0,25dB / 20Hz - 20kHz
Subsonic filter: at 20Hz with 18dB/octave
Input: 1x 5-pin mini XLR / 1x pair XLR / 1x pair RCA phono
Line-level output: 1x pair RCA, 1x pair XLR
Wiring XLR sockets: 1 ground, 2 “hot” and 3 “cold”
Trigger In/Out: 12V on/off detector
Power supply DC: 18V/500mA
Power consumption: 18V/max.290mA DC, <0.5 W standby
Dimensions: 206 x 72 x 194 (205 with sockets) mm
Weight: 1480g without power supply

Shipping Notes
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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]
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SKU: 71909055698

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Giovanni Vaccaro
Port Orchard, US
★★★★★ 5
Great!
Color: Pink, Color: Pink
Perfect for my small poodle mixes (13 lbs and 18 lbs). My dog (the one pictured) was able to solve this fairly quickly, but nonetheless it is amazing that she’s still taking the time to sniff and eat slowly. What I like is that even when she’s done, she goes back and re-sniffs and double checks in case she missed anything. It seems good quality so far and it’s been very easy to both set up and wash! Would definitely purchase again and would definitely recommend!
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Reviewed in the United States on May 22, 2026
D
Verified Purchase
Drema Mullins
Houston, US
★★★★★ 5
Stimulating for Dogs
Color: Pink
I use this for my blind and deaf dog. I crumble up small bits of treats and snacks in each compartment for her. I thought this would keep her busy for a while, but she figured it out quickly. The compartments are easy to load, but you need to break up the food or treats into small pieces. If the pieces are too large, they shift during loading and jam the slides. When the slides get jammed, it is hard for my dog to move them around and get to each compartment. She then starts chewing on the slides to get them to move. So far, she hasn't damaged the slides. The ones in the middle spin in a circle, so once she learned that, she breezes through those. She uses her nose to spin them in one direction to get to each compartment. The ones on the outside can be loaded on either side. She learned she has to push or pull those with her nose. It isn't much of a challenge for her, but she loves discovering the treats inside each section. The back has rubber feet, which keep it from sliding too much on the floor. It is well-made and durable. I hand-wash it. It is easy to clean out each section. It is exactly what I was looking for, and the pricing is excellent! I only wish she weren't so good at it and it kept her busy longer.
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Reviewed in the United States on May 14, 2026
M
Verified Purchase
M. G.
Dallas, US
★★★★★ 4
Great size for puppy size vs big dogs
Color: Pink
Dog's a nuisance, but fun. -5min after eating poops. This game wasn't a lot of food, but same result. I won't bore you w/a 2min video. But this was so much fun. Others I saw were bigger looking & this breed needs everything bigger. But for now it was the perfect distraction.. & it helps in training him to use his senses
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Reviewed in the United States on May 15, 2026
M
Verified Purchase
Mel D
San Leandro, US
★★★★★ 5
Nice item, good for small dogs/puppies
Color: Pink
Fun toy, easy to inbox, all the pieces were there, nothing missing. Kept my Dachshund girl busy hunting treats. The size makes me think it’s good for smaller dogs or puppies, this is not a large item. Would buy again, would recommend
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Reviewed in the United States on May 17, 2026
T
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Taylor Bertges
Massapequa, US
★★★★★ 5
As expected
Color: Pink
easy to clean and good stimulation for older or young dogs. if you want something mildly challenging this is it
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026

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