MasterSound Monoblock 845
Image source — © MasterSound
What is it?
Ask AI to scan specialized sites and forums, evaluate the impressions of using the product, its advantages and disadvantages and get a summary.
Model name
Monoblock 845
Input sensitivity (mV)
N/A
Input impedance (balanced) (Ω)
50 000
Input impedance (single-ended) (Ω)
50 000
Output impedance (balanced) (Ω)
N/A
Output impedance (single-ended) (Ω)
N/A
Max current (A)
N/A
Output power (8Ω) (W)
50
Output power (4Ω) (W)
N/A
Gain (dBu)
N/A
Frequency response low +/- 3dB (Hz)
8
Frequency response high +/- 3dB (Hz)
90 000
Signal to Noise Ratio (dB)
N/A
Total Harmonic Distortion + Noise (0% global feedback) (%)
N/A
Total Harmonic Distortion + Noise (100% global feedback) (%)
N/A
Max power consumption (W)
N/A
Damping factor
N/A
Dimensions (mm)
460 x 400 x 270
Weight (kg)
30
Official link
The Mastersound PF100 Litz Edition is a flagship Class A monoblock tube power amplifier, built according to a parallel single-stroke triode circuit with four 845 lamps and three 6SN7 lamps, producing 1×107 watts at 4 or 8 ohms.
The Mastersound Booster is a Class A tube mono-amplifier with Automatic Bias, producing 2 × 80 watts in pentode mode or 2 × 40 watts in triode mode, equipped with 2 × 6SN7 GT and 2 × KT150 lamps, as well as XLR and RCA inputs for connecting to an audio system.
Like all amplifiers from the Italian company MastersounD, the mono power amplifier operates in pure Class A (Parallel Single Ended in classe “A"). The 300B audiophile lamps work in the output stage, and the output transformers for them are designed and manufactured manually in our own factory.