Note that this is a discontinued product. You may want to visit the brand's page here to browse their newer products.
What reviewers think
Bloggers and YouTubers have tried this product—so we've summarized their strongest opinions below. Links to full reviews follow.
Product Strengths
- Balanced connections improve sound, though stellar audio is available via RCA inputs
- Tighter and continuous control over load impedance via a potentiometer control
- Discrete circuit design offers a more neutral sound than integrated circuits
- Two turntables can be connected at once, one with XLRs and one with RCAs
- Expanded soundstage and individual instrument placement both horizontally and vertically
Product Considerations
- Turntable with XLR outputs needed to experience its best features
- More expensive if balanced connection features are not being used
- Tube box will push coloration into the mix, so tubes need careful system matching
- Balanced outputs and moving coil cartridge are needed to reveal the sort of detail that vinyl aficionados champion
Comparisons (according to reviewers)
- Vs NAD Phono Preamp PP-1: Allows for markedly more detail and separation between instruments
- Vs Phono Box S3 B: Integrates all the technology from the SB3 and adds in a few extra features, as well as a potentiometer
- Vs Projects Tubebox DS3: The sound is far more clear, and the weighted treble and upper spectrum sound more pronounced
Takeaway: The Pro-Ject Phono Box DS3 B unlocks the potential of a turntable, enhancing the listening experience with more dynamics, details, and soundstage. It's a versatile phono preamp with remarkably neutral and detailed sound.
All
Phono Box DS3 B
reviews

Manufacturer details
- Input impedance: Stepless 10 – 1000 ohms or fix 47kOhms
- Input capacitance: 50, 150, 300, 400 pF
- Gain: 40, 45, 50, 55, 60, 65 dB (+6dB using XLR Out sockets)
- 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
- Input: 1x 5-pin mini XLR / 1x pair XLR / 1x pair RCA phono
- Line-level output: 1x pair RCA, 1x pair XLR
- 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
Brand highlights
Taking a step back to look at reviewers' thoughts of the brand's entire lineup—not just this product—what stands out most is the following:
- Pro-Ject offers a range of turntables and components that focus on simple setup and ease of use, often arriving pre-configured, making them particularly appealing to beginners.
- They prioritize sonic performance, often incorporating higher-end components like carbon fiber tonearms and Ortofon cartridges, even in their more affordable models.
- Pro-Ject is known for its all-in-one audio systems that combine a turntable, amplifier, and receiver into a single unit, aiming to provide component-like sound quality in a smaller, more convenient package.
Select products
A2
- Positioning: The entry-level, fully automatic turntable designed for ease of use and convenience.
- Description: Offers a fully automatic operation with a sub-chassis design that isolates the tonearm and platter from vibrations, making it ideal for small spaces where speakers are close to the turntable. Unlike the more manual and high-end models like the Signature series, focuses on user-friendly features and affordability, making it suitable for those with a limited budget who still want quality sound.
The Classic Reference
- Positioning: Positioned as a mid-range turntable, combines traditional design with modern technology.
- Description: Features a high-end EVO 9 AS HG tonearm and a precision motor control system, providing excellent sound quality with a touch of luxury. It offers more advanced features compared to the A2, such as a balanced XLR output.
RPM 10 Carbon
- Positioning: A high-end turntable known for its innovative design and superior sound quality.
- Description: With its carbon fiber chassis and 10" Evo tonearm, delivers exceptional sound clarity and stability. It stands out from the Classic Reference with its advanced materials and design.
Signature 10
- Positioning: A premium turntable that combines mass-loading with magnetically-floating principles for high-end audio performance.
- Description: Features a 10" single-pivot tonearm and a magnetically decoupled platter, providing a resonance-free listening experience. It offers more precise adjustments and a higher level of performance compared to the RPM 10 Carbon.
Signature 12.2
- Positioning: The flagship model, representing the pinnacle of Pro-Ject's turntable lineup.
- Description: Boasts a groundbreaking 12" 3-point pivot tonearm and a flywheel belt drive system, ensuring the most accurate and stable playback. It surpasses the Signature 10 with its larger tonearm and enhanced stability.
Our take on the brand
Look inside the brand
Our interview with the brand
What are two key technological innovations or strong opinions that differ you from other brands?
Pro-Ject Audio Systems was founded with a passion for analog audio reproduction. Our very first product, introduced in 1991, was a record player – a time when the entire industry was turning its back on vinyl. We didn’t jump on the bandwagon when vinyl became hip – we were instrumental in bringing vinyl back.
We manufacture – not only assemble – 95% of our products in the EU. Raw materials come in – finished products leave the factories. Since we make everything ourselves, we are able offer a 25 year spare part availability!
Today, we offer one of the broadest ranges of high-fidelity products in the world, including turntables, CD players, DACs, streamers, phono preamps, amplifiers, speakers, and a variety of accessories designed to enhance your system and vinyl care.
What's your approach to customer support?
Pro-Ject Audio Systems has a worldwide network of dealers and distributors. We ensure that our team members are highly knowledgeable in the field of high-fidelity audio setup and repairs. In the event of a need for support, the first point of contact is the local dealer. If the dealer cannot handle the problem, the second tier is the distributor in the respective country. By handling as many problems as possible locally, we can ensure the quickest and smoothest resolution.
What are your favorite tracks for showcasing the strength of your products?
Aside from one of the audio industry’s widest range of high-fidelity products, Pro-Ject also produces limited runs of high-quality vinyl records. 7Ray’s Jazzy Zoetrope is a double album of fine Jazz standards played by 7Ray and his quartet. One of the two records was recorded live at our headquarters in the Weinviertel region of Lower Austria. We produced the whole album in AAA for the highest analog purity. Here’s a link to the records we offer, which double as fine reference recordings across multiple musical genres.
What other products pair best with yours?

Used
Pro-Ject
What if you spend more?
Product Strengths
- Balanced connectivity ensures minimal extraneous noise
- Features continuously variable impedance control, allowing fine-tuning for low-output moving coil cartridges
- Tube complement, which is two E88CC valves, provides a warm and inviting character to the sound
- Allows connecting two turntables (or a turntable with two tonearms) simultaneously
- Amplifier opens up the sound of vinyl records in exemplary fashion, sounding resolved, detailed, silky smooth, and ear-friendly
Product Considerations
- Not completely silent, a tiny amount of hiss can be detected at higher gain levels when no music is playing
- Lacks a mono switch, which can reduce extraneous groove noise when playing mono recordings
- Dynamic contrast in the lowest octave is somewhat cautious
Comparisons (according to reviewers)
- Vs Primare R35: The Tube Box DS3 B has a slightly leaner sound, but only in the bass
- Vs Hegel V10: The Tube Box DS3 B is not as dynamic, but more open and airy
Takeaway: The Pro-Ject Tube Box DS3 B is a user-friendly phono stage that opens up the sound of vinyl, making it resolved and detailed. With its warm sound and balanced design, it is a great way to enjoy a record collection.
Video review
Our take on the brand
Our summary
Product Strengths
- Ultra-low noise with remarkably quiet backgrounds and effortless transparency
- Delivers Al Harewood's delicate brush work with an outstanding balance of brush "edge" and "swish"
- Clear and distinct sound, with a soundstage that is tall, wide, and deep
- Natural and matter-of-fact nature, one that doesn't feel processed or constrained in any particular way
- The V10 is a highly musical phonostage that resolves fine details, honors tonal colors, and allows the dynamic life in music to breathe at levels that belie the unit's modest price
Product Considerations
- Adjustments to capacitance, gain, and impedance are accomplished by means of a bank of DIP switches on the rear panel, which can be a bit confusing
- The instruction manual states it's possible to set impedance "freely between 50 and 550 ohms" and add 6 addition dB of gain, but to do so contact your Hegel dealer for more information
- Not as versatile as the PS Audio Stellar
- The V10 does not try to mask physical imperfections on the record
Comparisons (according to reviewers)
- Vs Simaudio MOON by Simaudio 610LP—the Hegel V10 performs so well in comparison to the much more expensive 610LP as to be encouraging
- Vs Aurorasound VIDA Prima—the Hegel V10 seemed to pull out more detail than the VIDA Prima
- Vs Aqvox Phono 2 Ci—V10 allows one to easily explore the musicians' context and intent better
- Vs Rega Aria 3—the V10 betters it by quite a way, showing how the Hegel has a more incisive and detailed nature
Takeaway: The Hegel V10 is a great sounding, well-made phono stage that produces the 3D, of both the music and the space behind it, while honoring the purity and simplicity of the recording. It has connectivity and configurability as well.
Video review
Our take on the brand
Product Strengths
- Comprehensive spec sheet
- Versatile phono stage with balanced outputs offers greater levels of gain
- Depth, detail, and an analogue character
- Flexible and capable
- Extracts the very best from any cartridge
- The casework feels solid and beautifully finished
Product Considerations
- Adjusting capacitance and loading via hidden dip switches under two small covers for left and right channels is a little trickier than the previous model's dial adjusters
- DIP switches are fiddly to use
- Busiest and brightest recordings can appear just a little sanitised
Comparisons (according to reviewers)
- The R35 offers a thorough update of its feature set, making it—on paper at least—one of the most versatile phono stages on the market today
- The R35 ups the ante by some margin, despite looking deceptively identical to the retired R32 front on
- Compared to the Hegel V10, the R35 is more playful dynamically with fatter bass, there is more depth in the soundscape, and a slightly larger range of timbres
Takeaway: The R35 is a versatile phono stage that can extract the best from any cartridge and has a comprehensive spec sheet. It offers depth, detail, and an analogue character that underlines vinyl's enduring appeal.
Video review
Our take on the brand
Product Strengths
- Crisp, clean, and spacious tone, which is fun to listen to, tonally neutral, and detailed
- Good and solid build quality
Product Considerations
- Substandard interface, with tiny buttons and labels, can be difficult to use
- In single-ended mode, the sound presentation can have slightly edgy mids
- Smaller interface font than the M6 makes the values slightly harder to read
- Size and weight might require sturdy shelf support
Comparisons (according to reviewers)
- M6x has an appreciable reduction in its noise floor and improved dynamic range compared to M6 Vinyl
- M6x has a slightly well-lit upper midband and a drier and leaner bass compared to ModWright PH 9.0 tube phono stage
- M6x Vinyl is a clear step up, having a crisp, clean, and spacious tone compared to Rega Aria Mk3
Takeaway: The M6x is a versatile phono stage that offers balanced connections, multiple inputs and solid build quality. It is sonically neutral and lets records speak for themselves.
Video review
Our take on the brand
What competes at this price?
Our Summary
Product Strengths
- Offers a versatile range of adjustments, including nine input impedance choices and four gain options, to match various cartridges
- Offers three different equalization curves (RIAA, Decca London, and American Columbia), unusual for phono stages in its price range
- Produces a clean, smooth, lucid, and well-balanced sound that is uncolored and neutral, allowing for greater transparency and speed
- Musical, smooth, coherent and dynamic, with a very good pace, rhythm, and timing
- Touchscreen interface is easy and intuitive to use
Product Considerations
- Moving magnet capacitance is set at 220pF and is not adjustable
- Some reviewers express concern about potential RF interference from the digital display affecting the analog circuitry, particularly with sensitive MC cartridges
- Instrumental images may be smaller than with other phono stages
- May sound a little weightless compared to significantly more expensive phono preamps
- Reviewers note the forthcoming PSU-5 power supply
Comparisons (according to reviewers)
- Compared to a similarly priced phono stage, the Gold Note PH-5 provided greater insights into how Miles Davis played each note, and was more full-bodied and dynamic
- The Pathos In the Groove was more spacious and shapely sounding but lacked the PH-5's sense of control and smoothness
- Compared to the Gold Note PH-10, there's a remarkably similar sound, with a tad more weight to recordings played through the more expensive PH-10
- The PH-5 sounds closer to the GrandiNote Celio MK IV—a bit richer, smoother, and more saturated—whereas the ESE Lab Nibiru is more about speed, precision, and transparency
Takeaway: The Gold Note PH-5 is a versatile phono stage that sounds musical and natural. It provides many options to adjust the sound, and it is an affordable way to get great performance from vinyl records.
Video review
Our take on the brand
Our Summary
Product Strengths
- Straightforward, high-quality preamp that does everything asked of it, very well
- Includes tone control knobs for bass and treble to personalize the listening experience
- Allows turntable users to switch between moving magnet (MM) and moving coil (MC) modes
- Features seven source audio inputs, a front-panel 3.5mm headphone jack, Bluetooth 5.1, optical and USB inputs, as well as a phono stage for turntables
Product Considerations
- Bluetooth 5.1 connectivity, while present, is not super high resolution compared with Wi-Fi and may not appeal to those seeking a more robust streaming experience
- Has no balanced inputs
Comparisons (according to reviewers)
- Against Rotel's RC-1572 MKII, the Adcom GFP-915 wins in many audiophile categories, such as a lower reported total harmonic distortion and noise floor
- The Schiit Freya S stereo preamp at $599 is another solid, no-frills audiophile option that can compare to the Adcom GFP-915
- The NAD C 3050 integrated amp's HDMI switching, internal DAC, Bluetooth 5.4 and phono stage might sway one to spend a few hundred more dollars than the Adcom
Takeaway: The Adcom GFP-915 is a traditional stereo preamp that delivers quality performance and offers a range of useful features for audiophiles. It is a worthwhile option for those seeking a simple and effective way to manage audio sources and volume control.
Video review
Our take on the brand
Our Summary
Product Strengths
- Features a fully discreet headphone amplifier built-in that sounds good
- Offers flexibility with passive, low gain, and high gain settings, not commonly found at its price point
- Build quality feels good, with a nice textured black finish
- Features a precise 128-step attenuator for accurate left-right balance, unusual for a $699 preamplifier
- Features a metal remote with volume, mute, and input selection
Product Considerations
- One reviewer experienced the Kara going into protection mode and muting the sound when adjusting the volume quickly—requiring a power cycle to resolve
- One reviewer said they prefer the RCA input and output sound
- XLR inputs for stereo mode are not available
Comparisons (according to reviewers)
- Vs Schiit Freya S: It replaces the Freya S and has significant upgrades, including a headphone jack and a more powerful power transformer
- Vs Pass Labs HPA1: The Pass Labs is a better-sounding pre-amplifier and headphone amplifier overall, but is significantly more expensive
Takeaway: The Kara preamplifier offers great flexibility with gain options and a good-sounding headphone amplifier. It's a well-built component that could be a good addition to an audio setup, especially if clarity is valued.
Video review
Our take on the brand
Our Summary
Product Strengths
- Offers much of what conrad-johnson learned with the GAT preamplifier, providing high performance at a lower budget
- The ET3SE's phonostage is essentially the TEA-2SE, offering great phono performance
- Strikes a perfect balance with a hybrid design, being extremely quiet and providing healthy tonal contrast, yet powerful and controlled
- Makes music collection come alive, especially after an hour or two to fully warm up
- Offers great sound, top build quality, and immense flexibility
Product Considerations
- The SE model with Teflon capacitors takes around 500 hours to sound its best
- Has only a single-ended design, complete with RCA jacks for inputs and outputs
- Only has one pair of main outputs, a second pair would be nice for those who use a powered subwoofer
- Remote is a stripped-down plastic model compared to billet aluminum remotes of higher-end conrad-johnson preamplifiers
- The non-SE versions have a somewhat warmer tonal balance with less extension at the frequency extremes
Comparisons (according to reviewers)
- The ET3SE offers about a quart and a half of the GAT's sound for less than a quarter of the price
- Given that the TEA2SE outboard phonostage is $4,000, the ET3SE's level of phono performance is amazing
Takeaway: The ET3SE is a great choice if you want high-end sound at a more affordable price. It is built well, sounds fantastic, and gives you a lot of flexibility for enjoying your favorite music.
Video review
Our take on the brand
Our Summary
Product Strengths
- Innovative features and intelligent engineering for 21st-century analogue playback
- Features a BLACK Mode, providing isolation from AC mains via an integrated lithium power cell for up to 30 hours of playback
- Fully configurable via a bespoke app (iOS/Android) for precise adjustment of gain and loading settings
- Can accommodate two turntables simultaneously, supporting both Moving Magnet (MM) and Moving Coil (MC) cartridges
- Ensures maximum channel separation and minimal system noise due to a fully mirrored internal layout
Product Considerations
- Premium pricing may be a barrier for some customers
- May be overkill for casual vinyl listeners
Takeaway: The VP4 offers a unique and customizable vinyl listening experience with its innovative features and high-quality construction. It allows users to get the best performance from their vinyl setup.
Video review
Our take on the brand
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