Accuphase A-48 Stereo Power Amplifier
A-48 Stereo Power Amplifier stands as the pinnacle of audio engineering excellence. Boasting a six-fold parallel push-pull architecture equipped with power MOS-FETs, this amplifier delivers an unparalleled level of precision and power. Its ideal gain allocation, realized through discrete semiconductors in an instrumentation amplifier configuration, ensures optimal signal processing, resulting in breathtaking audio clarity and fidelity. With an impressive signal-to-noise ratio of 117 dB and an output of 360 watts into 1 ohm for music signals, the A-48 sets a new standard for immersive listening experiences.
What truly sets the Accuphase A-48 apart is its meticulous attention to detail and robust protection features. The newly designed output protection circuit adds an extra layer of assurance by swiftly detecting any short-circuiting of the speaker terminals, providing audiophiles with complete peace of mind during intense listening sessions. With a damping factor of 800, this amplifier effortlessly controls speaker movement, ensuring tight and accurate bass response.
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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.
HIGHLIGHTS
- 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
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: 0.87V
- Signal to noise ratio: 117dB
- Speaker load impedance: 2Ω to 16Ω
- Dimensions: 465 x 211 x 464mm
- Weight: 33kg