Pro-Ject Phono Box RS2 MM/MC Riaa/Phonostage - DEMO salg

Fully balanced, fully discrete phono preamp of the highest class

Reference class phono preamplifier with unique impedance control

The Phono Box RS2 employs a true fully balanced design principle. Balanced transmissions consist of a hot and a cold (also called + and -) signal. Both the + and – signal chains effectively carry the same musical information. A true balanced amplifier can now extract the final musical information out the +/- signals and subtract, remove, all noise that could potentially be added along the transmission. In a true, fully balanced amplifier, like the Phono Box RS2, the + and – sections of both the left and right channel are treated individually, which doubles the amplifier sections by 2 as a result.

Extreme cartridge loading options

No other phono-preamp in the world has such fine options of setting the gain like the Phono Box RS2. Very large ranges from 40dB (voltage amplification by 100x) up to 70dB (voltage amplification by 3690x) are possible.

Load impedance can be set continuously via potentiometer, a system invented by Pro-Ject Audio Systems. It allows you to seamlessly adjust the impedance during playback and immediately assess the impact of different loading options.

Cartridges, by nature, suffer from small imbalances between the left and right channels. To correct this the Phono Box RS2 introduces a new feature that is absolutely rare in this price category. A potentiometer allows you to adjust the exact center of the sound stage in ranges of 2dB to the left or right.

Features
MM & MC capable
Fully balanced, true dual mono design
Fully discrete hardware design - NO Op-amps!
Fully passive RIAA & DECCA equalisation
Balanced XLR & unbalanced RCA In & Outputs
Unique continously variable input impedance loading and channel balance control to match every cartridge to 100% (adjustment even while playing)
Superior low noise / low distortion
Metal casing protects against vibration and interference

Input impedance Fixed 47kohms, variable 10 - 1000 ohms
Load capacity switchable 50, 100, 150, 200, 250, 300, 350, 400 pF
Gain MM: RCA: 40, 43, 46, 50 dB (+6dB using XLR)
Gain MC: RCA: 60, 63, 66, 70 dB (+6dB using XLR)
Signal to noise ratio MM (40dB): 89dB A-wt (10mV); MC (60dB): 79dB A-wt (1mV)
THD < 0,0015% (MM 40dB, 1kHz); < 0,0024% (MC 60dB, 1kHz)
RIAA accuracy within 0,4dB/20Hz - 20kHz
SubsonIc at 20Hz with 18dB/octave
Inputs RCA & XLR
Outputs RCA & XLR
Power supply 20V/3A DC; 110 - 240V, 50/60Hz
Power consumption 350mA DC < 1 watt standby
Dimensions W x H x D (with sockets) 206 x 72 x 200 mm
Weight 1600 g without power supply