Specifications

Operation Manual
Studio Reference I & II Professional Studio Amplifiers
page 26
Performance Studio Reference I Studio Reference II
Input Impedance (nominally balanced, nominally unbalanced) 10 kilohms, 5 kilohms 10 kilohms, 5 kilohms
Load Impedance (Note: Safe with all types of loads)
Stereo
Bridge Mono
Parallel Mono
4-8 ohms
8-16 ohms
2-4 ohms
4-8 ohms
8-16 ohms
2-4 ohms
Voltage Gain (at maximum level setting) 103:1 ± 6% or 40 dB ±0.5 dB at 0.775-volt sensitivity
57:1 ± 6% or 35 dB ± 0.5 dB at 1.4-volt sensitivity
20:1 ± 6% at 26 dB gain ± 0.5 dB
69:1 ± 6% or 37 dB ± 0.5 dB at 0.775-volt sensitivity
38:1 ± 6% or 32 dB ± 0.5 dB at 1.4-volt sensitivity
20:1 ± 6% at 26 dB gain ± 0.5 dB
Output Impedance < 10 milliohms in series with 2.5 microhenries < 10 milliohms in series with 2.5 microhenries
DC Output Offset (shorted input) ± 2 millivolts ± 2 millivolts
AC Line Voltage and Frequency Configurations Available (± 10%) 50 or 60 Hz; 100, 120, 200, 220 or 240 VAC (± 10%) 50 or 60 Hz; 100, 120, 200, 220 or 240 VAC (± 10%)
Power draw at idle 90W 90W
Construction Studio Reference I Studio Reference II
Ventilation Flow-through ventilation from front to sides Flow-through ventilation from front to sides
Cooling On-demand proportional speed fan On-demand proportional speed fan
Dimensions EIA Standard 19-inch rack mount width (EIA RS-310B),
7-inch (17.8-cm) height and 16-inch (40.6-cm) depth
behind mounting surface and 2.75 inch (7 cm) protru-
sion in front of mounting surface
EIA Standard 19-inch rack mount width (EIA RS-310B),
7-inch (17.8-cm) height and 16-inch (40.6-cm) depth
behind mounting surface and 2.75 inch (7 cm) protru-
sion in front of mounting surface
Weight
Net
Shipping
60.7 pounds (27.6 kg)
74.2 pounds (33.7 kg)
56.1 pounds (25.5 kg)
69.6 pounds (31.6 kg)
7 Specifications