Phono Box DS3 B
Fully balanced, dual-mono, discrete phono stage with XLR, 5-pin mini XLR and RCA inputs. It suits vinyl listeners who want adjustable MM/MC loading and a balanced signal path from the turntable to the amplifier.
- Fully balanced, dual-mono gain stage with discrete circuitry
- Stepless load impedance 10–1000 ohms or fixed 47 kOhms
- Gain 40–65 dB for MM, MC and low-output moving-iron cartridges
- Inputs: 5-pin mini XLR, XLR pair and RCA pair
- Outputs: RCA pair and XLR pair
- Two turntable inputs with settings stored per input
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The Phono Box DS3 B is a phono preamplifier built around a fully symmetrical gain stage and entirely discrete circuitry, with no op-amps in the audio path. The RIAA equalisation is passive and split, and the design is dual mono. The housing combines a steel chassis with aluminium panels to resist interference.
Two turntables can be connected at once, and the settings for each input are stored in memory. Gain runs from 40 to 65 dB in steps, capacitance can be set to four values, and load impedance can be adjusted steplessly from 10 to 1000 ohms (or fixed at 47 kOhms). This allows the unit to be matched to MM and MC cartridges, including low-output moving-iron types, and the loading can be changed during playback.
Inputs are a 5-pin mini XLR, a pair of XLR and a pair of RCA. Line-level outputs are a pair of RCA and a pair of XLR. The unit supports the maker's True Balanced Connection cabling, and a 12V trigger input/output is fitted. It is powered by an external 18V DC supply and comes in silver or black, with magnetic wooden side panels sold separately.
Video
Specifikationer
- Märke
- Pro-Ject
- Modell
- Phono Box DS3 B
- Kategori
- Hi-Fi och hemmaljud › Övrig Hi-Fi
Inputs
- Inputs
- 1x 5-pin mini XLR / 1x pair XLR / 1x pair RCA phono
- Input impedance
- Stepless 10 – 1000 ohms or fix 47kOhms
- Input capacitance
- 50, 150, 300, 400 pF
- Trigger In/Out
- 12V on/off detector
Outputs
- Line-level output
- 1x pair RCA, 1x pair XLR
- Wiring XLR sockets
- 1 ground, 2 "hot" and 3 "cold"
Audio
- 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
Power
- Power supply DC
- 18V/500mA
- Power consumption
- 18V/max.290mA DC, <0.5 W standby
Physical
- Dimensions
- 206 x 72 x 194 (205 with sockets) mm
- Weight
- 1480g without power supply
- Colours
- Silver, Black
- Chassis
- Steel chassis with aluminium panels