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AUDIO ANALOGUE ABsolute Monoblock. 100W Pure Class A ZERO FEEDBACK Integrated amplifier
New ABsolute Monoblocks power amplifiers: power amplifiers with inductive power supply and all stages on separate boards. Native balanced circuits, zero feedback and discrete components. 100W pure class A output power.
Inductive power supply consisting of a toroidal transformer and a shunt toroidal inductor specifically designed for ABsolute Monoblock.
Overall circuit without feedback.
All stages are fully balanced.
The ABsolute Monoblock is Class A biased up to 100 W over 8 Ohms, so it dissipates about 370 W in heat. The bridge output stage has twelve transistor pairs of 200 W each. The amplifier stage is an improvement of the SeGeSTA structure, which was already used in the Anniversary series.
The structure is deliberately asymmetrical and operates in current, without global feedback.
Traditionally mounted military resistors are oversized to minimise thermal distortion.
Audio capacitors.
A balanced mono input.
Managed by a microcontroller.
Technical specifications
Number of channels: 1
Input impedance: 47 kΩ
Gain:
20 V/V
26 dB
Power at 8Ω load: 1% THD
100W cl. A pure/115W cl. AB
Power with 4Ω load: 1% THD
50W cl. A pure/230 W cl. AB
Power with 2Ω load: 1% THD
25 W cl. A pure/380 W cl. AB
Sensitivity:
100W pure class A, over 8Ω
1.4 VRMS
Noise voltage recorded at input:
A-weighted: 4.0µV
Noise voltage at output:
20 Hz - 80kHz
220µV
Output noise voltage:
20 Hz - 22khz
100µV
Output noise voltage
heavy A
80µV
Signal to Noise Ratio (SNR):
Input terminated at 0 Ohm, referenced to 100W and weighed A
110 dB
Signal to Noise Ratio (SNR):
Input terminated at 0 Ohm, referenced to 1W over 8 Ohm - 20 Hz - 80kHz: 82.2 dB
Signal to Noise Ratio (SNR):
Input terminated at 0 Ohm, referenced to 1W over 8Ohm - 20 Hz - 22khz: 89.0 dB
Signal-to-Noise Ratio (SNR)
Input terminated at 0 Ohm, referenced to 1W into 8 Ohm - Heavy A
91.0 dB
Damping Factor
8 Ohm
30
Frequency response:
8 Ohms/1 W/-3 db
200 khz
THD at 100 W
8 Ohm/1 khz
0,02%
THD at 200 W
4 Ohm/1 khz
0,30%
THD at 350 W
2 Ohm/1 khz
0,50%
THD at 20 W
20 Hz-20 kHz/8 Ohms
< 0,006%
Standby power consumption
230 VAC
<1 W
Dimensions:
H x W x D: 330x520x500mm
Weight: 72 kg
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