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Accuphase A-48 STEREO POWER AMPLIFIER
Featuring a six-fold parallel push-pull architecture with power MOS-FETs, as well as ideal gain allocation realized with discrete semiconductors in an instrumentation amplifier configuration, the A-48 harnesses a wealth of advanced technology. Its outstanding performance is exemplified by a signal/noise ratio of 117 dB, output of 360 watts into 1 ohm (music signals), and a damping factor of 800. The newly designed output protection circuit can detect any short-circuiting of the speaker terminals, for complete peace of mind. This power amplifier is the ultimate instrument for immersive music appreciation on the highest level.
Power MOS-FETs in 6-parallel push-pull configuration
Linear output characteristics over entire load impedance range
Strong power supply with massive toroidal transformer and large 60,000 μF filtering capacitors
Instrumentation amplifier principle
High-gain signal input section in discrete configuration
Dedicated power supply for signal input section
Polarity switching for balanced input connectors
MCS+ circuit topologys
Current feedback principle in amplification circuitry
Protection circuitry using MOS-FET switches
High damping factor of 800
Speaker output protection circuit guards against short-circuiting
Two sets of large speaker terminals
4-step gain control
Support for bi-amping and bridged mode
Aluminum top plate with hairline finish
Features & Specifications
A-48 Features
- Pure Class A stereo power amplifier with outstanding S/N ratio and very high damping factor
- Rated for 45 watts into 8 ohms and 360 watts into 1 ohm
- Power MOS-FETs in 6-parallel push-pull configuration
- Linear output characteristics over entire load impedance range
- Strong power supply with massive toroidal transformer and large 60,000 μF filtering capacitors
- High-gain signal input section in discrete configuration
- Instrumentation amplifier principle
- Dedicated power supply for signal input section
- All signal paths realised with discrete semiconductor components
- Balanced Remote Sensing
- MCS+ circuit topology
- Current feedback amplification principle
- Speaker output protection circuit guards against short-circuiting
- Line and balanced input connectors
- Highly responsive large peak power meters
- Two sets of large speaker terminals
- 4-step gain control
- Support for bi amplification and bridged mode
- Aluminium top plate with hairline finish
A- 48 Specifications
- Power output: 45 watts per channel into 8Ω (stereo), 180W into 8Ω (mono)
- Frequency response: 20Hz to 20kHz
- Total harmonic distortion: 0.03%
- Damping factor: 800
- Gain: 28 dB
- Input sensitivity: 0.87VSignal to noise ratio: 117dB
- Speaker load impedance: 2Ω to 16Ω
- Dimensions: 465 x 211 x 464mm
- Weight: 33kg Net
- Year: 2019
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