C H A P T E R 5
Specifications
MB-125 Monoblock power amplifier
Vacuum Tube Complement
4 x EL34, 2 x 12AT7
Output Power
20 Hz – 20kHz, into 5 ohm load
Tetrode = 100 Watts
Triode = 50 Watts
T.H.D. 20 Hz – 20 kHz @ 125W
T.H.D. 20 Hz – 20 kHz @ 60W
Tetrode: < 3%
Triode: < 3%
Input Sensitivity @ 125 W
700mV
Input Impedance
145,000 Ohms
Optimum Load Range
2 - 8 ohms
S/N Ratio @ 125W, tetrode
S/N Ratio @ 60W, triode
-95dB, 120 Hz
-95dB, 120 Hz
Power Consumption
Idle = 100 W
Full Power = 300 W
Primary Mains Fuse Rating
100/120V = 6A Ceramic Slo Blo
220/ 240V = 3A Ceramic Slo Blo
B+ Fuse Rating
0.75A fast acting ceramic
Dimensions
W = 16 inches (40cm), D = 12 inches
(30cm), H =7 inches (18 cm)
Weight
42 lbs (22Kg) per monoblock {total 45 lbs
(25 Kg) packed}
MB-125 Owner’s Manual
VTL
15
