Description
Accuphase The A-48S is a premium Class A stereo power amplifier designed to deliver exceptional audio performance.
Accuphase A-48S – a premium stereo power amplifierredto A
Accuphase The A-48S sets new standards in the world of premium audio. Developed with the most advancedredadvanced technology and renowned quality Accuphase, this Class A power amplifier delivers exceptional performance. With MOS-FET transistors in 6-way parallel push-pull configuration The A-48S provides linear power output up to 400W at 1 ohm.
Z exceptional damping factor of 1.000 The A-48S allows for precise nadzor nad speakers and delivers incredible sound fidelity. Balanced Remote Sensing technology optimizes the signal flow, while signal current feedback in MCS+ circuit significantly reduce background noise.
Signal current feedback technology ensures excellent phase characteristics in the high frequency range, virtually independent of frequency response, even with changes in amplifier operation. This enables dynamic and linear speaker drive.
The amplifier includes 4-stage gain control , polarity switching for balanced inputs , and switching between Bi-Amping and Bridge modes . High reliability is ensured by MOS-FET switches without mechanical contacts and a speaker protection circuit.
The A-48S design combines functionality and aesthetics with a brushed aluminum housing , large logarithmic signal level displays , and highly reliable components to deliver a superior listening experience.
Main features
- Class A drive with 6-parallel push-pull MOS-FET output stage
- High linear output power: 50 W / 8 ohms, 100 W / 4 ohms, 200 W / 2 ohms, 400 W / 1 ohm
- Instrumentation amplifier
- Current feedback amplification topology
- Balanced remote nadzor
- MCS+ circuit
- Large, high-efficiency toroidal transformer
- High-capacity 68.000 μF filter capacitors
- Large speaker terminals, non-contactrednot connected to the protection circuit
- Protection circuit with MOS-FET switches
- High damping factor: 1.000
- Large, highly sensitive power meters with a scale from -50 dB
- Bi-amping and bridge connection options
- Short circuit protection circuit for speaker output
- Aluminum top plate with brushed surface
- High-carbon cast iron insulating feet with superior damping properties
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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e-mail: info@av-planet.si
phone: 08 383 83 89
url: www.av-planet.si
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More information about Accuphase on the official website Accuphase.
