Pro-Ject Audio Systems
Pro-Ject Phono Box RS
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Phono Box RS
Highend phono preamplifier
Reference class phono preamplifier with unique impedance control
This ultra low noise and distortion preamplifier is made for the audio conniosseur and offers not only breathtaking performance but is capable to adapt to virtually any phono cartridge through variable impedance control. Impedance adjustment can be done while playback! Due to use of best parts, like SSM2019 from Analog Devices as input stages and Linear Technology LT1010 as high current buffer stage, Phono Box RS delivers ultra low levels of distortion and noise. Its very low output impedance makes it insensitive to selection of interconnect cables and lenghts.
Fully passive RIAA and DECCA equalisation is selectable. Phono Box RS offers fully balanced circuitry and both XLR and RCA inputs and outputs. All in all vinyl playback will never have sounded as clear, detailed and smooth, than with this superlative phono stage!
Phono Box RS is an ultra-low noise, ultra-low distortion phono preamplifier designed to deliver breathtaking performance from your phono cartridge through the availability of an unprecedented range of adjustments. Proper impedance matching is essential in optimizing performance of cartridge and Phono Box RS offers one of the industry’s most unique solutions to this. Continuously adjustable (even ‘on-the-fly’) loading is at your fingertips via the front-facing potentiometer so that you can ‘tune’ while you listen.
Dual-Mono Design
Top-grade componentry is used throughout the dual-mono circuit topology ensuring exceptional quietude and purity of sound. Unique features include a fully passive, selectable RIAA and DECCA phono equalization circuit, MM/MC capability with adjustable capacitance and fully balanced ins & outs. Heavily shielded chassis metalwork is used to shield the circuitry from the negative effects of vibration and electrical interference.
ADDITIONAL INFORMATION
Features
- MM & MC capable
- True dual mono design
- Balanced XLR & unbalanced RCA In & Outputs
- Fully passive RIAA & DECCA equalisation
- Unique continously variable input impedance loading, matches every cartridge (adjustment even while playing)
- RCA & XLR In & Out
- Superior low noise / low distortion
- Classy & elegant dip switches
- DC power supply (< 1 watt standby power)
- Metal casing protects against vibration and interference
- Available in silver or black
Technical Specifications
Input impedance Fixed 10 Ohms or 47kOhms,
Variable 10 - 1200 Ohms
Load capacity switchable 100pF, 200pF, 300pF, 420pF, 520pF
Output impedance 50 Ohms
Gain, MM / MC RCA: 40, 50, 60 dB
XLR: 46, 56, 66 dB
Signal to noise ratio 91 dBA
THD 0.019%
RIAA accuracy within 0.3dB/20Hz - 20kHz
SubsonIc 20Hz / - 12 dB
Inputs RCA & XLR
Outputs RCA & XLR
Power supply 2 x 18V/300mA DC; 220 - 240V, 50Hz
Power consumption 150mA DC < 1 watt standby
Dimensions W x H x D (with sockets) 206 x 72 x 210 mm
Weight 2000 g without power supply
