Pure Analog Integrated Amp
'Pure' is back, and Pro-Ject is leading the way with its Stereo Box RS, a pure analog integrated amplifier with hybrid vacuum tube and solid state design.
These days an increasing number of audio components, including integrated amplifiers, are incorporating digital inputs, digital-to-audio converters, and digital processing of one sort or another. It's a very convenient route to take for folks who listen to digital music files. But for those purists out there who only listen to sources via analog connections, these additions may not only be unnecessary, they may also be unwanted. Analog, just analog, is what some audio purists prefer.
Pro-ject's Stereo Box RS integrated amp is a very welcome entry in Pro-Ject's critically acclaimed Box Series of compact, high-performance hi-fi gear. "In look and feel, Pro-Ject's Boxes sort of resemble miniaturized versions of traditional high-end components," notes Stephen Mejias in a CES 2013 show report posting for Stereophile.com for January 15, 2013. "How do they sound? Surprisingly big, bold, and thoroughly enjoyable…"
Pure Analog Circuitry
Pro-Ject's Stereo Box RS is a real audiophile-grade integrated amplifier that strictly follows Pro-Ject's less-is-more principle in terms of its pure analog circuitry, while offering more-is-more in terms of listening satisfaction. The RS offers six 'strictly analog' inputs in a dual mono construction. Power output is 80-watts-per-channel at 8 ohms and 120-watts-per-channel at 4 ohms.
According to the folks at Pro-Ject, "Combining analog and digital inputs would compromise audio quality. If digital input options are needed, just add Pro-Ject's DAC Box RS and you will get a total of 14 analog and digital input options and the best possible audio reproduction!"
Vacuum Tube Input Buffer
One huge feature that's responsible for the compelling sonic signature of the Stereo Box RS is its hybrid design. While the output stage uses advanced solid state circuitry for speed and control, a vacuum tube input buffer stage gives the Pro-Ject the warm and engaging sound quality of classic gear from the Golden Age of hi-fi. The input buffer uses a 6922 vacuum tube, known for its superior sonics and longevity.
Fully Balanced Dual Mono Design
The Stereo Box RS boasts a fully balanced dual mono design with separate 'mirrored' circuitry for each channel. This approach yields superior channel separation and, when done right as with the Stereo Box RS, it also offers superb soundstage and imaging.
For your listening pleasure, the Stereo Box RS gives you six stereo line level inputs, consisting of five unbalanced RCA ins and one balanced XLR in. This offers a lot of connection options, more than you would ever expect in such a compact and space-saving chassis.
Adaptable, Flexible, Great Sounding
The Stereo Box RS can be used as integrated amplifier or as a preamplifier with an additional subwoofer output option and a fixed Record Out connection. The pure analog circuitry with low noise buffer input stages offers uncompromised audiophile playback. Elegant control buttons on front and an included IR wireless remote make operation a piece of a cake. A high quality volume control with a motorized potentiometer used by the remote add to the performance.
The Pro-Ject offers the option of upgrading the included power supply with an optional, separately available enhanced outboard power supply from Pro-Ject for improved sound quality. With the included power supply, power consumption in standby mode is less than a single watt.
Substantial Metal Casing
The compact yet massive metal casing is beautiful and effectively protects the electronics from vibration and electromagnetic interference – and it stays cool on the outside. The outboard DC power supply keeps the chassis size small. Stereo Box RS is available in silver or black.
"In look and feel, Pro-Ject's Boxes sort of resemble miniaturized versions of traditional high-end components – in particular, the chassis and displays of the Box amps recall classic Audio Research designs. Very cute, very cool."
"How do they sound? Surprisingly big, bold, and thoroughly enjoyable…"
- Stephen Mejias, Stereophile.com, CES 2013 report, Jan 15, 2013
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