Vinnie Rossi Presented the 2nd Generation BRAMA Collection Amplifiers
15.01.2025 05:10 | ~2 minutes read
The second generation of BRAMA audio equipment from Vinnie Rossi offers significant improvements in both the design of the devices and their sound quality. In total, three devices were released in the line - a preamplifier, a monoblock power amplifier and an integrated amplifier. All devices are built using a fully balanced dual mono input-to-output architecture and are equipped with only XLR commutation.
The Vinnie Rossi BRAMA Preamplifier uses a tube scheme based on a matched pair of Western Electric WE300B triodes. The device operates in pure Class A, uses a custom switch-mode power supply with patented linear Belleson super-regulated outputs and offers independent circuits for the positive and negative preamplifier voltage rails, tubes cathode heating, and control circuitry.
Specifications
This product is in the Hi-Fi and High End Electronics and Acoustics database
Preamplifiers — Vinnie Rossi BRAMA Preamplifier
Model name
BRAMA Preamplifier
Analog inputs (balanced)
5
Analog inputs (single-ended)
N/A
Analog outputs (balanced)
3
Analog outputs (single-ended)
N/A
Gain (dBu)
0, 6, 12
Input sensitivity (mV)
N/A
Output voltage (V)
10
Input impedance (balanced) (Ω)
20000
Input impedance (single-ended) (Ω)
N/A
Output impedance (balanced) (Ω)
N/A
Output impedance (single-ended) (Ω)
N/A
Maximum output level (balanced) (dBu)
N/A
Maximum output level (single-ended) (dBu)
N/A
Volume control range (dBu)
N/A
Frequency response low +/- 3dB (Hz)
5
Frequency response high +/- 3dB (Hz)
100000
Signal to Noise Ratio (SNR, unweighted) (dB)
N/A
Total Harmonic Distortion + Noise (THD+N) (%)
0.1
Dimensions (mm)
475 x 381 x 140
Weight (kg)
20.9
Official link
The Vinnie Rossi BRAMA Monoblock Power Amplifier is a high-current power amplifier that delivers up to 600 W RMS power into 4 Ohms load (the power increases linearly to 1,200 W RMS into 2 Ohms loudspeakers). The amplifier uses Class AB MOSFET output – but the most interesting thing is that such “power” is achieved using only 3 matched output devices per rail! Minimization of the signal path and innovative grounding scheme in the case of the BRAMA Monoblock Power Amplifier coexist with the ability to control even extremely complex loudspeakers. Each monoblock is equipped with a 2,400 W peak output power patented Belleson super-regulated outputs power stage.
Specifications
This product is in the Hi-Fi and High End Electronics and Acoustics database
Power amplifiers mono — Vinnie Rossi BRAMA Monoblock Power Amplifier
Model name
BRAMA Monoblock Power Amplifier
Input sensitivity (mV)
N/A
Input impedance (balanced) (Ω)
20000
Input impedance (single-ended) (Ω)
N/A
Output impedance (balanced) (Ω)
0.01
Output impedance (single-ended) (Ω)
N/A
Max current (A)
N/A
Output power (8Ω) (W)
300
Output power (4Ω) (W)
600
Gain (dBu)
22
Frequency response low +/- 3dB (Hz)
5
Frequency response high +/- 3dB (Hz)
100000
Signal to Noise Ratio (dB)
100
Total Harmonic Distortion + Noise (0% global feedback) (%)
N/A
Total Harmonic Distortion + Noise (100% global feedback) (%)
0.1
Max power consumption (W)
N/A
Damping factor
N/A
Dimensions (mm)
475 x 387 x 140
Weight (kg)
20.4
Official link
Finally, the Vinnie Rossi BRAMA Integrated Amplifier combines the advantages of the two devices described above. The model uses a high-current amplification section (2 x 400 Watts RMS of output power into 4 Ohms load), operating in class AB based on MOSFET transistors, and a Class A preamplifier stage based on a matched pair of premium Western Electric WE300B triodes. Here, too, a proprietary switch-mode power supply with a peak power of 2,400 W patented Belleson linear super-regulated outputs is used.
Specifications
This product is in the Hi-Fi and High End Electronics and Acoustics database
Integrated amplifiers — Vinnie Rossi BRAMA Integrated Amplifier
Model name
BRAMA Integrated Amplifier
Type
Integrated amplifier
Analog inputs (balanced)
5
Analog inputs (single-ended)
N/A
Input sensitivity (mV)
N/A
Input impedance (balanced) (Ω)
20000
Input impedance (single-ended) (Ω)
N/A
Output impedance (balanced) (Ω)
100
Output impedance (single-ended) (Ω)
N/A
D/A conversion
N/A
Phono MM/MC current-sensing input impedance (Ω)
N/A
Output power (8Ω) (W)
2 x 200
Output power (4Ω) (W)
2 x 400
Gain (dBu)
22, 28, 34
Frequency response low +/- 3dB (Hz)
5
Frequency response high +/- 3dB (Hz)
100000
Signal to Noise Ratio (dB)
100
Total Harmonic Distortion + Noise (%)
0.1
Damping factor
N/A
Dimensions (mm)
475 x 406 x 140
Weight (kg)
22.7
Official link
The devices are made “for centuries” according to the cost-no-object principle – for example, the case bases are machined from a solid aluminum billet.
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