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Photos and specs Stereo amplifier Pro-Ject Stereo Box RS

Review and test Stereo amplifier Pro-Ject Stereo Box RS
  • Stereo amplifier Pro-Ject Stereo Box RS
  • Stereo amplifier Pro-Ject Stereo Box RS

Description stereo amplifier, Pro-Ject Stereo Box RS

Compact integrated stereo amplifier Pro-Ject Stereo Box RS is made according to the same principles as audiophile equipment. A simple metal casing hides a dual mono circuit with short chains of transmission of the audio signal, in which selected components are used. On the front panel of the Pro-Ject Stereo Box RS are the volume control, toggle switch for input selection, as well as LEDs to indicate the signal source connected.


The back panel is filled much more densely. There are inputs for six line sources (one of whom presents a balanced XLR and the other unbalanced RCA. The amplifier is equipped with two linear outputs unregulated and regulated, which significantly increases the flexibility of its use, and a connector for connecting an active subwoofer. For connecting speaker systems are provided two pairs of gold-plated terminals. The power supply from Pro-Ject Stereo Box RS external, that allowed to eliminate most of the noise from the power transformer. The source generates a voltage of 2 x 48 V for correct operation of the differential circuits of the device.


The amplifier has an input buffer stages on the lamps, which provide good compatibility with different sources of signal and interconnect cables. The volume control is made on the basis of traditional analog potentiometer motorized for remote control. With a miniature remote control you can also switch input sources.
Despite its small size, Pro-Ject Stereo Box RS develops output power 2 x 120 W at 4 ohms and keeps working at lower impedance to 2 Ohms. Solid metal housing provides reliable protection of electronic circuits from mechanical stress and electromagnetic interference. This unit can be a good basis for serious audio systems and successfully cope with high-quality sound system of the room is medium in size.


Features stereo amplifier Pro-Ject Stereo Box RS


The input tube buffer amp
Motorized volume control, remote control
Balanced XLR and unbalanced RCA inputs


Characteristics of the stereo amplifier Pro-Ject Stereo Box RS

The number of channels2
Output power2 x 80 watts (8 Ohms), 2 x 120 W (4 Ohms)
Frequency range20 Hz - 20 kHz (-0,1 dB / 0.2 dB)
Harmonic distortionless than 0.05 %
Inputsbalanced XLR, 5 unbalanced RCA
Input lamps2 x ECC88 (6922)
Outputsregulated linear, unregulated linear, subwoofer, speaker
Input impedance50 kω (RCA), 20 ohms (XLR)
Output impedance0,022 Ohm
The ratio signal/noisemore than 95 dB
Strengthening31 dB
Remote controlthere
The power supply /- 48V / 2.5 A
Dimensions (WxHxD)206 x 72 x 200 mm
Weight2.6 kg (without power supply)

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