Description
Designed for the most demanding audiophiles and music lovers
Integrated amplifier Accuphase E-700 – 70W of power in the rangeredu A at 4 ohms
Integrated amplifier Accuphase The E-700 is an integrated amplifier ofreda A with a fully balanced configuration. Circuit for nadThe volume control uses Balanced AAVA, which allows nadthe peak of volume without losing the liveliness of musical performances.
The power stage includes an instrument amplifier and a quadruple amplifier.redA push-pull circuit with powerful MOS-FET transistors, providing robust linear output power (35 W at 8 ohms, 70 W at 4 ohms, 140 W at 2 ohms) and 160 W at a 1 ohm load (music signals).
Balanced remote sensing and MOS-FET switches enable an impressive damping factor of 1.000. Developed in pursuit of perfection, the E-700 harnesses the full potential of any speaker and delivers sound that is imbued with musicality.
Main features
- Perfectly balanced configuration: The entire signal path from input to output is designed in a fully balanced configuration, reducing noise and distortion and ensuring sound purity.
- Balanced AAVA volume control: Uses theredno technology Balanced AAVA (Accuphase Analog Vari-gain Amplifier) for precise and stable volume control with minimal impact on sound quality.
- High-precision and robust volume sensor: A high-precision sensor is built in for nadvolume control that ensures smooth and precise control and a long service life.
- Power stage as an instrument amplifier: The power section of the amplifier is designed as an instrumental amplifier, which allows for precise signal amplification with minimal distortion.
- Quadruple ascentredin push-pull configuration with MOS-FETs: Uses a four-fold increasereda push-pull circuit with powerful MOS-FET transistors operating in a wide rangeredu A, which ensures linear output power and stable operation even under demanding loads.
- High damping factor: With a guaranteed damping factor of 1.000, the amplifier is accurate nadIt enhances the movement of the speaker diaphragms, which improves the accuracy and responsiveness of the sound.
- Powerful power supply unit: It is equipped with a high-efficiency toroidal transformer and large filter capacitors, ensuring stable power supply and the ability to handle dynamic changes in music.
- Protection circuits with MOS-FET switches: Built-in protection circuits use MOS-FET switches to effectively protect the amplifier and connected speakers.red possible damage due to overloads or short circuits.
- Rated output power: 35 W per channel at 8 Ω, 70 W per channel at 4 Ω, 140 W per channel at 2 Ω, 160 W per channel at 1 Ω (for music signals)
- Expansion slots: Two option boards for DAC-60, AD-60 or LINE-10.
What is a Class A amplifier?
Class A amplifier (also razred A amplifier) is one of the basic power amplifier topologies, known for providing the best possible sound quality, but often at the expense of higher energy consumption in heatingAmplifiers in A-classredu operate on the principle where output transistor stage always on (conducting), regardless of whether there is a signal at the input or not.
How does a Class A amplifier work?
- In the futureredu A is a transistor or other active component constantly in a conductive state, meaning that current flows through the amplifier all the time, even when there is no music signal.
- The amplifier operates in linear range, which reduces distortion, especially in cases of low signals.
- This mode of operation allows extremely accurate and dynamic sound reproduction, which is crucial for high-quality predpracticing music.
Preddiversityreda A amplifiers:
- Extremely low distortion: Amplifiers ofreda A are known for their very low level of harmonic distortion, which means they maintain natural and pure sound reproduction.
- Accurate sound reproduction: Due to the continuous conduction and uniform current through the circuit, the sound is more natural, rich and accurate.
- Excellent linearity: They are ideal for hearing subtle details in music.
Why are they popular among audiophiles?
Amplifiers in the rangeredin A are extremely appreciated among music lovers because of its ability to provide authentic, warm and rich sound without perceptible distortion. This sonic warmth is especially evident at low volumes, which is why many audiophiles consider Class A amplifiers to be among the best for enjoying music.
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
Power and capacity:
- Rated output power:
- 35 W per channel at 8 Ω
- 70 W per channel at 4 Ω
- 140 W per channel at 2 Ω
- 160 W per channel at 1 Ω (music signals)
Frequency response:
- At 1 W output power: 3 Hz – 150 kHz (+0, -3 dB)
- At rated output power: 20 Hz – 20 kHz (+0, -0,5 dB)
Harmonic distortion (THD):
- 0,03% at 8–16 Ω
- 0,05% at 2–4 Ω
Intermodulation distortion:
- 0,01%
Signal-to-noise ratio (S/N):
- 103 dB (Line, balanced input)
- 117 dB (Main In, balanced input)
Damping factor:
- 1.000
Reinforcement:
- 18 dB – 28 dB (depending on input source)
Input interfaces:
- 5 pairs of RCA (Line-in inputs)
- 2 pairs of XLR (balanced inputs)
- RCA and XLR main input (Main In)
Outputs:
- 2 pairs of speaker terminals
- 2 RCA and XLR outputs (Pre Out)
Impedance:
- Input impedance:
- 40 kΩ (balanced input)
- 20 kΩ (unbalanced input)
- Output impedance:
- 50 Ω (Pre Out)
Max. input voltage:
- 5 V (balanced and unbalanced input)
Tons of controls:
- Bass: ±10 dB at 300 Hz
- Treble: ±10 dB at 3 kHz
- Loudness compensation: +6 dB at 100 Hz
Energy consumption:
- No load: 178 W
- According to IEC: 220 W
- Standby: 0,3 W
Dimensions and weight:
- Dimensions: 465mm × 191mm × 428mm
- Net weight: 24,9 kg
- Packaged weight: 32 kg
Expansion options:
- 2 optional disc slots:
- DAC-60 (digital input board)
- AD-60 (phono record)
- LINE-10 (analog input panel)
Other features:
- Balanced-AAVA volume control
- ANCC technology for noise and distortion reduction
- High precision volume sensor
- Protection circuits with MOS-FETs
- Dedicated high-quality headphone amplifier
- Compatible option boards: DAC-60, AD-60, LINE-10
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More information about Accuphase on the official website Accuphase.
