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  a100
The a100 is the most affordable integrated stereo amplifier in the Opera Audio product line.
There are almost no other competitors at or near its price. The solid-state amplifier has a simple design, is easy to use, and delivers pleasing sound with tube-like lucidity.

Control Functions: Volume, Select, Power On/Off
Inputs: 1, 2 and 3
Output: Left, Right
Specifications:
Output Power: 80W x2
Bandwidth at - 1dB (80W): 2Hz to 100kHz
Input Sensitivity for Rated Output: 440mv
Harmonic distortion + N: <0.02%(50W RMS, 1kHz)
Signal / noise: 90dB
Input interfaces: 3 groups (RCA)
Output interfaces: 1 group (RCA)
Input Impedance: 47k
Consumption: 50W
Dimension: 430(L) x 336(W) x 72(H) mm
Weigh: 12kg(Net); 12.5kg(Shipping)
  a100plus
a100plus has the same circuit of a100 but without volume. The a100 and a100plus can be used as Bi-amping.

CONTROL FUNCTIONS: Power On/Off POWER OUTPUT: 80 watt x 2, RMS 1kHz POWER REQUIREMENTS: 220 VAC
TOTAL HARMONIC DISTORTION: less than 0.05%(20watt, 1kHz)
FREQUENCY RESPONSE: (-1dB points at 50 watt) 2Hz-100kHz
INPUT SENSITIVITY: 0.44V
INPUT IMPEDANCE: 100k ohms
OUTPUT IMPEDANCE: 8 ohms SIGNAL/NOISE: 90dB
INPUT INTERFACES: 1 groups (RCA) DIMENSIONS: 430(L) x 320(W) x 70(H) mm WEIGHT: 12kg
  b2000X
As our ahead of schedule production realization of solid-state amps using IC originally designed exclusively by Opera audio, the b2000x might be the best solid-state integrated stereo amplifier ever offered by Opera audio.
This remarkable unit includes a well-improved, 100-watt per channel, push-pull Class AB power amplifier and a real built-in IC preamplifier stage.

CONTROL FUNCTIONS: Volume, Select, Power On/Off
POWER OUTPUT: 100 watt x 2( 8ohm), 160 wattx2( 4ohm ) RMS 1kHz
TOTAL HARMONIC DISTORTION: less than 0.05%(20watt, 1kHz)
FREQUENCY RESPONSE: (-1dB points at 50 watt) 2Hz-80kHz
INPUT SENSITIVITY ( 2 ,3,4): 0.3V
INPUT SENSITIVITY (1): phono stage
INPUT IMPEDANCE: 47k ohms
SIGNAL/NOISE: 90dB
INPUT INTERFACES: 4 groups (RCA) DIMENSIONS: 430(L) x 320(W) x 70(H) mm
WEIGHT: 14kg

 

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