Integrated Stereo Amplifier E E E- - -370 370 370 370 Accuphase Laboratory, Inc.
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Accuphase Laboratory, Inc.
Improvement of power supply• Reinforced power transformer• Increased capacitors
– 22,000μF x 2 pieces → 30,000μF x 2 pieces
Accuphase Laboratory, Inc.
E-360 E-370
Rated output power• Class-AB 150W / channel into 4 ohm
8 ohm
E-360 100W
Accuphase Laboratory, Inc.
8 ohm
4 ohm
E-370 100W
E-370 150W
E-360 140W
7% up
Ultra Low Noise• Lower noise than the former model E-360
– Actual noise voltage of speaker output: 34μV@Volume position: -30dB
Accuphase Laboratory, Inc.
34μV
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48μV
30% down
Actual output noise voltage
Technology for ultra low noise• AAVA re-designed for low noise
– Paralleled V-I converter in larger two units– Low-impedance feedback network I-V converter
Paralleled
Accuphase Laboratory, Inc.
AAVA: Accuphase Analog Vari-gain Amplifier
I-V converter
Low impedance
Technology for ultra low noise• Power amplifier re-designed for low noise
– Low-impedance feedback network
Low impedance
Accuphase Laboratory, Inc.
Power amplifier block with instrumentation amplifier configuration
Super high Damping-Factor• Two times higher than E-360
– Damping Factor: 400 guaranteed
100% up
Accuphase Laboratory, Inc.
400
800
200
Guaranteed Damping-Factor
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• Balanced Remote-sensing– Feedback from speaker terminal proximity– Signal-line and GND-line sensing
Signal sensing
Technology for high DF
Accuphase Laboratory, Inc.
Signal sensing
Speaker terminal
Power Amplifier
+
-
Signal
GND
GND sensing
• Speaker protection equipped with MOSFET • Short signal path configuration
Technology for high DF
Accuphase Laboratory, Inc.Protection AssemblyOn-resistance: 2.6 mΩ
MOS-FET switch
Brass bar
• Ready for the option board DAC-40– Sampling frequency on the front display
Further more …
Accuphase Laboratory, Inc.
• high-quality remote commander