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Pro-Ject Phono Box DS3 B Phono Preamp
Product Description
Product Description
Phono Box DS3 B — True Balanced, Dual Mono & Fully Discrete Audiophile Phono Stage
The Pro-Ject Phono Box DS3 B is a fully discrete, dual-mono phono preamp with a True Balanced Connection. The fully balanced gain stage optimizes signal-to-noise performance, feeding the RIAA equalization stage with a clean signal. It adds flexible, real-time loading control to find the right load impedance for your cartridge.
True Balanced design for lower noise
The DS3 B incorporates a fully symmetrical gain stage and balanced in/outs to extract musical information while effectively filtering noise from interferences in modern homes. Connect via 5-pin mini XLR or standard XLR to engage the True Balanced Connection; with a MC cartridge and True Balanced phono cables, it can access the cartridge’s full balanced signal.
- Fully symmetrical gain stage
- Balanced inputs and outputs (both XLR and 5-pin mini XLR inputs)
- Dual mono
- True Balanced Connection
Flexible, real-time cartridge matching
Match a wide range of cartridges with stepless impedance control. Load impedance is adjusted continuously via a potentiometer, allowing changes during playback to assess the impact of different settings in real time.
- Stepless impedance: 10–1000 ohms (plus fixed 47k ohms)
- Selectable input capacitance: 50, 150, 300, 400 pF
- Selectable gain: 40, 45, 50, 55, 60, 65 dB (+6 dB when using XLR outputs)
Low-noise, high-accuracy equalization
A fully symmetrical gain stage feeds a fully passive and discrete RIAA equalization network. The split passive EQ improves impedance matching and reduces deviation from the ideal RIAA curve.
- Fully passive, discrete RIAA EQ
- Split passive equalization for lower deviation from RIAA
- RIAA accuracy: < 0.25 dB (20 Hz–20 kHz)
Versatile connectivity and convenient setup
Connect up to two turntables simultaneously; the DS3 B stores parameters for each input in memory. The steel chassis with aluminum panels provides high rigidity and isolation against interference.
- Two turntable inputs with per-input memory
- Inputs: 5-pin mini XLR, XLR pair, RCA phono pair
- Outputs: RCA pair, XLR pair
- Subsonic filter at 20 Hz with 18 dB/octave
- 12 V trigger in/out
- Steel chassis with aluminum panels
Cartridges are balanced signal transducers by nature. Due to MM internal wiring, an MC cartridge is required to access the full balanced signal. With Pro-Ject True Balanced Connection cables, any Pro-Ject turntable with RCA, miniXLR or 5P output can be used to take advantage of this architecture.
Available finishes: Silver or Black.
Frequently Asked Questions
-
What is the True Balanced Connection and how do I use it?
It is a symmetrical, fully balanced signal path. Connect the turntable via 5-pin mini XLR or standard XLR. With a moving-coil cartridge and True Balanced phono cables, the DS3 B accesses the cartridge’s full balanced signal and effectively filters noise from household interferences.
-
How many turntables can I connect?
Up to two turntables can be connected simultaneously, and all parameters for each input are stored in memory.
-
How do I match the DS3 B to my cartridge?
Use the stepless impedance control (10–1000 ohms) to adjust during playback, or select a fixed 47k ohms. Input capacitance can be set to 50, 150, 300, or 400 pF, and gain is selectable from 40 to 65 dB (+6 dB via XLR outputs).
-
What contributes to its low-noise performance and RIAA accuracy?
A fully symmetrical gain stage optimizes SNR and feeds a fully passive, discrete RIAA equalization network with split passive EQ, achieving < 0.25 dB accuracy from 20 Hz to 20 kHz.
-
What inputs and outputs are provided?
Inputs: 1x 5-pin mini XLR, 1x pair XLR, 1x pair RCA phono. Outputs: 1x pair RCA, 1x pair XLR. A 12 V trigger in/out is also included.
-
Does it include a subsonic filter?
Yes. A subsonic filter operates at 20 Hz with an 18 dB/octave slope.
-
How is the chassis constructed?
It uses a steel chassis with aluminum panels for high rigidity and interference isolation.
Add to Cart to integrate the Pro-Ject Phono Box DS3 B preamp into your analog system, and contact or visit Gibbys for personalized setup advice from our team.
Features & Specs
Features & Specs
Warranty
Warranty
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Product Description
Product Description
Phono Box DS3 B — True Balanced, Dual Mono & Fully Discrete Audiophile Phono Stage
The Pro-Ject Phono Box DS3 B is a fully discrete, dual-mono phono preamp with a True Balanced Connection. The fully balanced gain stage optimizes signal-to-noise performance, feeding the RIAA equalization stage with a clean signal. It adds flexible, real-time loading control to find the right load impedance for your cartridge.
True Balanced design for lower noise
The DS3 B incorporates a fully symmetrical gain stage and balanced in/outs to extract musical information while effectively filtering noise from interferences in modern homes. Connect via 5-pin mini XLR or standard XLR to engage the True Balanced Connection; with a MC cartridge and True Balanced phono cables, it can access the cartridge’s full balanced signal.
- Fully symmetrical gain stage
- Balanced inputs and outputs (both XLR and 5-pin mini XLR inputs)
- Dual mono
- True Balanced Connection
Flexible, real-time cartridge matching
Match a wide range of cartridges with stepless impedance control. Load impedance is adjusted continuously via a potentiometer, allowing changes during playback to assess the impact of different settings in real time.
- Stepless impedance: 10–1000 ohms (plus fixed 47k ohms)
- Selectable input capacitance: 50, 150, 300, 400 pF
- Selectable gain: 40, 45, 50, 55, 60, 65 dB (+6 dB when using XLR outputs)
Low-noise, high-accuracy equalization
A fully symmetrical gain stage feeds a fully passive and discrete RIAA equalization network. The split passive EQ improves impedance matching and reduces deviation from the ideal RIAA curve.
- Fully passive, discrete RIAA EQ
- Split passive equalization for lower deviation from RIAA
- RIAA accuracy: < 0.25 dB (20 Hz–20 kHz)
Versatile connectivity and convenient setup
Connect up to two turntables simultaneously; the DS3 B stores parameters for each input in memory. The steel chassis with aluminum panels provides high rigidity and isolation against interference.
- Two turntable inputs with per-input memory
- Inputs: 5-pin mini XLR, XLR pair, RCA phono pair
- Outputs: RCA pair, XLR pair
- Subsonic filter at 20 Hz with 18 dB/octave
- 12 V trigger in/out
- Steel chassis with aluminum panels
Cartridges are balanced signal transducers by nature. Due to MM internal wiring, an MC cartridge is required to access the full balanced signal. With Pro-Ject True Balanced Connection cables, any Pro-Ject turntable with RCA, miniXLR or 5P output can be used to take advantage of this architecture.
Available finishes: Silver or Black.
Frequently Asked Questions
-
What is the True Balanced Connection and how do I use it?
It is a symmetrical, fully balanced signal path. Connect the turntable via 5-pin mini XLR or standard XLR. With a moving-coil cartridge and True Balanced phono cables, the DS3 B accesses the cartridge’s full balanced signal and effectively filters noise from household interferences.
-
How many turntables can I connect?
Up to two turntables can be connected simultaneously, and all parameters for each input are stored in memory.
-
How do I match the DS3 B to my cartridge?
Use the stepless impedance control (10–1000 ohms) to adjust during playback, or select a fixed 47k ohms. Input capacitance can be set to 50, 150, 300, or 400 pF, and gain is selectable from 40 to 65 dB (+6 dB via XLR outputs).
-
What contributes to its low-noise performance and RIAA accuracy?
A fully symmetrical gain stage optimizes SNR and feeds a fully passive, discrete RIAA equalization network with split passive EQ, achieving < 0.25 dB accuracy from 20 Hz to 20 kHz.
-
What inputs and outputs are provided?
Inputs: 1x 5-pin mini XLR, 1x pair XLR, 1x pair RCA phono. Outputs: 1x pair RCA, 1x pair XLR. A 12 V trigger in/out is also included.
-
Does it include a subsonic filter?
Yes. A subsonic filter operates at 20 Hz with an 18 dB/octave slope.
-
How is the chassis constructed?
It uses a steel chassis with aluminum panels for high rigidity and interference isolation.
Add to Cart to integrate the Pro-Ject Phono Box DS3 B preamp into your analog system, and contact or visit Gibbys for personalized setup advice from our team.
