Description
Accuphase The A-80 is a premium stereo power amplifier.reda A, designed as a stereo version of the A-300 model
Accuphase A-80 – a premium stereo power amplifierredto A
Accuphase A-80 je high-end stereo power amplifier versionredto A, designed as stereo version of the A-300 model, which was developed at 50th anniversary companies. It boasts exceptional linearity and power, thanks to 10-parallel anti-phase MOS-FET output stages, which provides 65 W at 8 Ω, 130 W at 4 Ω, 260 W at 2 Ω and 520 W at 1 Ω.
The amplifier uses instrumental amplifier architecture ter signal-current feedback loop, which allows low noise level, exceptional stability and detailed music reproduction. Built-in MCS+ circuit and balanced remote sensing enable extremely accurate nadoutput signal output, which ensures damping factor nad 1.000.
The A-80 is equipped with high efficiency toroidal transformer ter 120.000 μF filter capacitors, which provide stable power supply and superior dynamics. Four-stage nadamplification, bi-amping option and bridge connection allow flexible use in various systems. The robust design includes aluminum housing with brushed surface ter cast iron legs with excellent damping properties to reduce vibrations.
The A-80 combines cutting-edge technology and exceptional accuracy in sound reproduction, which places it at the very top of high-end audio components.
Main features
- Output stage with MOS-FET transistors in a 10-fold parallel anti-phase configuration
- High linear output power: 65W at 8Ω, 130W at 4Ω, 260W at 2Ω, 520W at 1Ω
- Instrument amplifier
- Signal-current feedback
- Balanced Remote Sensing for improved nadspeaker dawn
- MCS+ circuit for lower noise and better stability
- Damping factor 1.000 for extremely precise nadzor nad speakers
- Switching output power meter and digital display
- Adjustable meter hold function (Peak Hold Time)
- Possibility to switch between balanced and unbalanced input
- Four-stage naddawn of reinforcement
- Switching the polarity of symmetrical input terminals
- Bi-amping and bridge connection possible
- Discretely designed input stage for noise reduction
- Speaker protection circuit with short circuit detection
- Large speaker terminals, non-contactrednot connected to the protection system
- Improved damping factor with high precision wound coils
- Reliable MOS-FET switches without mechanical contacts
- Massive, high-efficiency toroidal transformer
- 120.000 μF large capacity filter capacitors
- Brushed aluminum housing
- Large, fast-response output power meters with graphical display
- High-carbon cast iron legs for superior vibration absorption
- GRP printed circuit boards with fluorocarbon resin for improved stability and durability
Accuphase A-80 – Cutting-edge technology and performance
Door Design A-80 je power amplifier versionredto A, developed on the basis of mono amplifier A-300, created at 50th anniversary AccuphaseOptimized output stage with 10-parallel anti-phase MOS-FET configuration provides 65 W at 8 Ω, 130 W at 4 Ω, 260 W at 2 Ω and 520 W at 1 Ω. Napredno noise reduction technologies allow exceptional musical presence and detailed sound reproduction, which is comparable to live performance experience.
Napredon technology and top quality sound
High output power
The output stage uses MOS-FET transistors in a 10-fold parallel anti-phase configuration and provides linear and dynamic power transmission.
Perfect signal-to-noise ratio
Accurate distributionredThe amplification process reduces the residual noise by 7% compared to standard circuits.
Exceptional damping factor
With damping factor 1.000 allows for complete nadzor nad electromotive forces in loudspeakers, which allows the best possible sound reproduction.
Optimized signal amplification
High gain input stage (12,6×) and exceptional signal-to-noise ratio greatly improves sound clarity.
Balanced Remote Sensing
Improves damping factor by using GND (ground) feedback from speaker terminals.
Instrument amplifier
Fully symmetrical input stage reduces external interference and provides extremely low noise level.
MCS+ circuit
Dual parallel configuration voltage amplifier stages reduces background noise by approximately 30%.
Signal-current feedback
Allows excellent phase characteristics in the high-frequency range, which ensures linear and dynamic nadspeaker dawn.
Accuphase A-80 – perfection in sound
Accuphase The A-80 combines the latest audio technology and decades of experience, which brings exceptional sound quality, precision and uncompromising craftsmanshipThe amplifier is designed for the most demanding audiophileswho are looking for a complete musical experience.
Accuphase
Accuphase is a prestigious Japanese audiophile brand founded in 1972. The company specializes in premium high-performance audio equipment such as amplifiers, predCD exercisers, DAC-ji and pred-amplifiers. Accuphase is known for its uncompromising build quality, superior sound and elegant, classic design with gold and copper details. Their products are popular among music lovers and audiophiles for their exceptional reliability, durability and accurate sound reproduction. The brand focuses on hand-crafted craftsmanship and precision engineering, which makes it one of the most respected brands in the world of audio technology.
Technical specifications
Output capacities
- Output power (main output, both channels active):
- 65W at 8Ω
- 130W at 4Ω
- 260W at 2Ω
- 520W at 1Ω
Frequency characteristics and amplification
- Frequency response: 0,5Hz – 160kHz (-3dB)
- Distortions: < 0,05% (at rated power)
- Signal-to-noise ratio:
- 127 dB at maximum gain
- 133 dB at -12 dB gain setting
- Damping factor: > 1.000
- Adjustable gain:
- MAX
- -3 dB
- -6 dB
- -12 dB
Input and output characteristics
- Input sensitivity:
- 1,12 V for 65 W at 8 Ω
- Input impedance:
- Balanced input: 40 kΩ
- Unbalanced input: 20 kΩ
- Output impedance: Izrednot low for optimal nadspeaker dawn
Architecture and technology
- Razred A amplifier
- 10-parallel anti-phase MOS-FET output stage
- Instrument amplifier
- MCS+ (Multiple Circuit Summing) circuit for improved signal-to-noise ratio
- Signal-current feedback for stable operation and optimal naddawn phase
- Balanced Remote Sensing for precise impedance matching
Power supply and construction
- Massive high-efficiency toroidal transformer
- 120.000 μF filter capacitors
- Die-cast aluminum housing for vibration reduction and heat dissipation
Additional functions
- Four-stage naddawn of reinforcement
- Bi-amping and bridge connection possible
- Large speaker terminals, also suitable for Y-connectors
- Speaker protection circuit with short circuit protection
- Reliable MOS-FET switches without mechanical contacts
- Large analog power meter with switchable backlight
- Hold time setting function inredPeak Hold Time
- High-carbon cast iron legs with excellent damping properties
- GRP printed circuit boards with fluorocarbon resin for better stability and reduced losses
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