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Based on price data from 1 merchant for "Pro-Ject Phono Box DS3 B Balanced MM/MC Phono Preamp". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.
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Description
Elevate your vinyl experience with the Pro-Ject Phono Box DS3 B Balanced MM/MC Phono Preamp, a masterclass in audio precision and design. This preamp brings an array of high-end features borrowed from Pro-Ject’s prestigious RS series, ensuring you capture every nuance of your favorite records. Its True Balanced Connection technology is a standout, providing a stable, interference-free signal that dramatically reduces noise for a pristine listening experience.
Housed in a robust steel chassis with sleek aluminum panels, the Phono Box DS3 B is not just about looks—its construction provides high rigidity and exceptional isolation against external interference. The dual-mono design enhances channel separation, ensuring you hear the depth and detail of your music as intended. With a symmetrical gain stage and passive RIAA equalization, this preamp ensures an ultra-clean signal path, free from unwanted noise and distortion.
Engineered for versatility, it accommodates both moving magnet and moving coil cartridges. Fine-tune your sound with selectable gain settings and continuously variable input impedance loading. Plus, a 20Hz subsonic filter is ready to eliminate any low-frequency rumble, so you enjoy only the music. Whether you're a seasoned audiophile or new to the vinyl renaissance, the Phono Box DS3 B is your gateway to a richer, more detailed sonic adventure.
Key Features:
- True Balanced Connection technology for superior noise rejection
- Symmetrical gain stage and passive RIAA equalization
- Dual-mono design for optimal channel separation
- Accommodates both MM and MC cartridges
- Selectable gain and adjustable input impedance
- 20Hz subsonic filter to eliminate low-frequency rumble
- Heavy-duty aluminum casing for interference protection
Product specs
| Preamp Type | True Balanced Audiophile Phono Box DS3 B, Black |
| Number of Channels | Dual Mono |
| Analog Inputs | 1 x 5-pin Mini XLR, 2 x XLR, 1 x Dual RCA Phono (MM/MC) |
| Analog Outputs | 2 x XLR, 1 x Dual RCA Phono |
| Data I/O | 2 x 2.5mm (12V trigger in, out) |
| Frequency Response | 20Hz to 20kHz |
| Power Source | 18V/500mA DC Power Supply (included) |
| Height | 2.83" |
| Depth | 7.63" |
| Width | 8.11" |
| Weight | 3.26 lbs |
FAQs
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What types of phono cartridges is the Pro-Ject Phono Box DS3 B compatible with?
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The Pro-Ject Phono Box DS3 B is compatible with both Moving Magnet (MM) and Moving Coil (MC) phono cartridges, allowing for versatile use with a wide range of turntables.
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What are the main connectivity options for the Pro-Ject Phono Box DS3 B?
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The Pro-Ject Phono Box DS3 B offers multiple connectivity options, including 1 x 5-pin Mini XLR, 2 x XLR, and 1 x Dual RCA Phono inputs, along with 2 x XLR and 1 x Dual RCA Phono outputs for flexible integration into your audio setup.
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Does the Pro-Ject Phono Box DS3 B require a specific power supply?
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Yes, the Pro-Ject Phono Box DS3 B requires an 18V/500mA DC power supply, which is included with the preamp for convenient setup and operation.
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How does the Pro-Ject Phono Box DS3 B handle signal processing?
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The Pro-Ject Phono Box DS3 B features a true balanced dual mono design, providing enhanced audio fidelity and reduced noise for an audiophile-grade listening experience.
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Is the Pro-Ject Phono Box DS3 B suitable for high-fidelity audio systems?
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Yes, the Pro-Ject Phono Box DS3 B is designed for high-fidelity audio systems, offering a frequency response of 20Hz to 20kHz and balanced outputs to ensure high-quality sound reproduction.
Videos
GRAMOPHONE
Pro-Ject Phono Box DS3 B Balanced Phono Preamp
Reviews
PROS
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Exceptional sound quality with both MM and LOMC cartridges
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Flexible settings to match various MC cartridges
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Balanced XLR output provides superior audio clarity
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Easy impedance adjustment on the front panel for precise tuning
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Discreet blue LED lights enhance user experience
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Compatible with DIN > XLR connections for enhanced audio performance
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Operates noise-free, delivering a clean listening experience
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Significant audio improvement noticeable even at the lowest gain setting
CONS
Owner Insights
We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Pro-Ject Phono Box DS3 B Balanced MM/MC Phono Preamp.
Features and functionality
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The Pro-Ject Phono Box DS3 B Balanced preamp supports both MM and MC cartridges, allowing users to potentially run two turntables simultaneously.
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Balanced connections are intended for noise rejection, but their benefits are negligible with short cables typical in home audio setups.
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The Pro-Ject Tube Box DS3-B offers a wide range of capacitance settings up to 400pF, beneficial for users with specific cartridge requirements like the SoundSmith cartridge.
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The DS3-B allows connecting two turntables via RCA and XLR, with easy switching from the front panel, which remembers settings for each.
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The S3 B's user-selectable capacitance and gain settings offer flexibility unmatched by many preamps under $1000, appealing to users seeking versatile cartridge compatibility.
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Use cases and applications
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The Yamaha AS-801's A/B zone capability allows mixing and matching MC/MM cartridges to different speaker zones for diverse listening experiences.
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Comparisons
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Balanced connections are more beneficial for long cable runs, over 5 meters, rather than typical home audio distances.
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The Pro-Ject DS3-B offers superior MC input impedance options compared to competitors like the Rega Aria mk3 and Parasound JC3 Jr.
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The MoFi Ultra, while a contender, lacks appeal for some due to its built-in headphone amp and aesthetics, steering users toward the S3 B for its cleaner integration.
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User experience
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Owners appreciate the DS3-B's front-panel configurability, avoiding the inconvenience of dip switches typically found underneath or behind units.
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Owners upgrading from Schiit Mani 2 to the S3 B report significant sound improvements, indicating a worthwhile investment for those dissatisfied with entry-level preamps.
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Value and pricing
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Some users suggest that while the Rega Aria is high-end, the Pro-Ject DS3-B provides more flexibility and features for a similar price range.
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Critic Reviews
Based on 0 Reviews and 0 Ratings
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