Description
Accuphase A-48
Whereas the larger integrated amplifiers can get a little visually overwhelming, this power amp oozes ‘cool’. The power section may be similar too the one in the E-800, but separating the preamp with (hint) C-2150 brings a very significant uplift in quality. The decision to buy this combo for demonstration took moments.
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.
Really, it’s utterly magnificent, even with ‘only’ the C-2150 preamp.
The output noise is reduced by the fully discrete configuration amplifier circuit which any ICs are not installed on the signal paths.
It is exactly same circuit configuration as Class-A Stereo Power amplifier A-75.
Accuphase A-48 specifications:
- 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
Specifications and design subject to change without notice for improvements.
