Pro-Ject Amp Box RS2 – Compact Power Amplifier
05.02.2025 07:25 | ~1 minute read
Pro-Ject has introduced a compact stereo power amplifier Pro-Ject Amp Box RS2. A distinctive feature of the new product is the use of a pair of vacuum tubes and the ability to switch the model to a bridged mode.
The Pro-Ject Amp Box RS2 power amplifier is built using a hybrid circuit - the preliminary amplification stage in each channel is implemented on a dual triode 6922 (6DJ8), and the solid-state output stages operate in the traditional class A / B and provide up to 2 x 80 W in each channel when working on a load with an impedance of 8 Ohms and 130 W for a load of 4 Ohms. In bridged mode, the amplifier is capable of developing up to 350 W at a load of 8 Ohms. The all-metal case of the amplifier is important for the distribution and dissipation of excess heat.
The external power supply unit included with the Pro-Ject Amp Box RS2 amplifier allows for an upgrade to the more advanced Pro-Ject Power Box RS2 version with a larger toroidal transformer and a total filter capacity of 40,000 μF.
The Pro-Ject Amp Box RS2 power amplifier is available in black or silver finishes. The recommended retail price is €1,799, and the additional Pro-Ject Power Box RS2 power supply unit will cost an additional €999.
Specifications
This product is in the Hi-Fi and High End Electronics and Acoustics database
Power amplifiers stereo — Pro-Ject Amp Box RS2
Model name
Amp Box RS2
Input sensitivity (mV)
N/A
Input impedance (balanced) (Ω)
20000
Input impedance (single-ended) (Ω)
47000
Output impedance (balanced) (Ω)
N/A
Output impedance (single-ended) (Ω)
N/A
Max current (A)
N/A
Output power (8Ω) (W)
2 x 80
Output power (4Ω) (W)
2 x 130
Gain (dBu)
27
Frequency response low +/- 3dB (Hz)
20
Frequency response high +/- 3dB (Hz)
20000
Signal to Noise Ratio (dB)
97
Total Harmonic Distortion + Noise (0% global feedback) (%)
N/A
Total Harmonic Distortion + Noise (100% global feedback) (%)
0.08
Max power consumption (W)
N/A
Damping factor
N/A
Dimensions (mm)
206 x 85 x 227
Weight (kg)
2.66
Official link
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