Amplificator integrat Accuphase E-370

Full Description

Overview

Inheriting outstanding technology from the top-of-the-line E-600 and the high-power version E-470, the E-370 represents a full model change from the E-360. At the heart of the preamplifier section is the same version of the AAVA volume control as found in the E-600, pushing the noise floor to an absolute minimum. The power amplifier block employs the latest instrumentation amplifier topology, enabling fully balanced signal transmission in all stages. This reliably shuts out external noise interference and ensures perfectly stable operation. As a result, overall S/N ratio has been improved by 3 dB. Other impressive features include MOS-FET switches in place of relays for speaker protection, helping to ensure superb electrical characteristics and improve long-term reliability. The circuit topology of the output stage is designed for extremely low impedance, resulting in a damping factor of over 400, demonstrating excellent speaker drive capability.

Specs

Rated Continuous Average Output Power: (both channels operating simultaneously, 20 – 20,000 Hz) 150 W/ch 4-ohm load; 100 W/ch 8-ohm load

Total Harmonic Distortion: (both channels operating simultaneously, 20 – 20,000 Hz) 0.05% 4 to 16 ohm load

Intermodulation Distortion: 0.01%

Frequency Characteristics:

HIGH LEVEL INPUT – At rated continuous average output:  20 – 20,000 Hz +0, –0.5 dB

POWER INPUT – At rated continuous average output: 20 – 20,000 Hz +0, –0.2 dB;  At 1 watt output: 3 – 150,000 Hz +0, –3.0 dB

Damping Factor: 400 (with 8-ohm load, 50 Hz)

Output Voltage, Output Impedance: PRE OUTPUT 1.13 V 50 ohms (at rated continuous average output)

Gain: HIGH LEVEL INPUT →　PRE OUTPUT: 18 dB; POWER IN →　OUTPUT: 28 dB

Tone Controls: Turnover frequency and adjustment range; BASS: 300 Hz ±10 dB (50 Hz); TREBLE: 3 kHz ±10 dB (20 kHz)

Loudness Compensation: +6 dB (100 Hz)

Attenuator: –20 dB

Power Meters: Logarithmic peak level indication, shown in dB and %

Load Impedance: 4 – 16 ohms (Terminals A or B); 8 – 16 ohms (Terminals A and B simultaneously)

Stereo Headphones: Suitable impedance: 8 ohms or higher

Power Requirements: 120 V/230 V AC, 50/60 Hz (Voltage as indicated on rear panel)

Power Consumption: 46 watts idle; 245 watts in accordance with IEC 60065