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Pro-Ject Phono Box RS2 Phono Pre-Amp

Pro-Ject Phono Box RS2 Phono Pre-Amp

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Regular price £1,399.00
Regular price Sale price £1,399.00
Sale Sold out
  • Free Delivery
  • Demo Available
  • Trade-in Available
  • 2 year Warranty
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Details

Description

Phono Box RS2

Fully balanced, fully discrete phono preamp of the highest class

Reference class phono preamplifier with unique impedance control

The Phono Box RS2 is the ultimate phono preamplifier of the highest class. It is fully balanced from the input to the output. Electronics are fully discrete, no op-amps are in use and it uses split passive RIAA and DECCA equalization.

Discrete Circuitry

A discrete circuit is composed of electronic components which are disparate, individual devices, also called discrete components. These can be “passive” components, like resistors, capacitors and inductors, as well as “active” components, which in our case are transistors. The opposite to this would be an integrated circuit, which uses operational amplifiers (Op-Amps) in the signal chain. Countless hours of listening tests and years of experience have shown us that even the very best Op-Amps do not tend to be so neutral, natural, dynamic or vivid. Standard phono pre-amplifiers with integrated circuits have a few tens or hundreds of components, but discrete designs will employ hundreds or thousands of components by comparison. That makes for an extended and more costly design process, but results in the best sound for your money.

Fully Balanced

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.

Split passive EQ

The Phono Box RS2 uses split passive equalization for both of its RIAA and DECA curves. This is more costly to design and implement but ensures the most accurate representation of the ideal EQ curve. Split passive equalization allows for better impedance matching and lower deviation from the ideal RIAA or DECA curve.

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.

Steel/aluminium chassis

The Phono Box RS2 has a steel chassis which is covered by screwed aluminium panels. This construction brings very good rigidity and splendid isolation against interferences.

Power Box RS2 Phono – linear power supply upgrade

An outboard power supply with linear construction is even better, because it can offer much cleaner power. When you want to manufacture such clean and really high-end power supplies, you have to use a transformer with a very low core saturation and preferably with shielding between primary and secondary windings. Obviously, such a transformer becomes larger than one would expect. Also, much more expensive. That is why such a power supply requires a cabinet the size of the Phono Box RS2 itself. Our Power Box RS uni 1- & 4-way will be another step up for your Phono Box RS2 performance.

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

Specifications

Specifications

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

Book a Demo

Book a Demo:

Pro-Ject Phono Box RS2 Phono Pre-Amp
Pro-Ject Phono Box RS2 Phono Pre-Amp

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Pro-Ject Phono Box RS2 Phono Pre-Amp
Pro-Ject Phono Box RS2 Phono Pre-Amp

Reviews

Reviews

Delivery & Returns

Delivery & Returns

We offer FREE delivery to the mainland UK (excluding Channel Islands, Isle of Man, Isle of White, Isles of Scilly, and some of the remote Scottish Isles).

For other areas please contact us for a quote. Select items can be delivered internationally by prior agreement. Again please contact us for a quote. We will always do our best to help.

Our aim is to dispatch goods within 2 working days of an order being placed. Please allow 5 working days from the time of your order to receipt of item. If an order is expected to take longer than this our order fulfillment department will contact you to inform you of this.

Where multiple items are ordered, we will dispatch them all in one package. If you have ordered any special or customized items, or items otherwise not immediately available, we will dispatch the order when all items are available. If you have any concerns regarding this, please contact us and we will do are very best to help you.