Accuphase Laboratory, Inc.　New product

CLASS-A 60W/ch STEREO POWER AMPLIFIER A-70

Pure Class A operation delivers quality power: 60 watts x 2 into 8 ohms
Power MOS-FET output stage features 10-parallel push-pull configuration and delivers linear high power progression to ultra-low 1-ohm impedances
Ultra low-noise instrumentation amplifier principle used in input stage
Amplification stage implements further evolved MCS+ topology
Current feedback principle combines stable operation with outstanding sound quality
Bridged connection mode allows upgrading to monophonic amplifier
Two selectable meter types: digital power meters showing true power values and bar graph indicators

Fully digital signal processing Voicing Equalizer
High-speed 40-bit floating point DSP
Separate digital filters for Voicing and Equalizer sections
Wide-format color LCD panel allows direct drawing of response curve with stylus pen
Freely programmable 30 pattern memory
Real-time spectrum analyzer for display of music signal and microphone input
Analog and digital inputs/outputs provided as standard

Revolutionary AAVA volume control
Output stage with triple parallel push-pull power MOS-FETs
Instrumentation amplifier principle for power amplifier input stage allows fully balanced signal transmission, complemented by MCS+ topology and current feedback amplification circuitry
Logic-control relays for shortest signal paths
Strong power supply with massive high-efficiency transformer and large filtering capacitors
POWER IN button allows separate use of preamplifier and power amplifier sections

High-grade SA-CD/CD drive
MDSD type D/A converter using eight parallel devices
Support for playback of DSD discs with DSF file format
"Direct Balanced Filter" with separate balanced and unbalanced signal paths
HS-LINK and USB digital interfaces
EXT DSP inputs and outputs allow insertion of DG-58 into signal path for sound field correction
Phase selector for balanced outputs
Numeric indication of sampling frequency

Output stage with triple parallel push-pull configuration for each channel delivers high power down to very low impedance loads
Instrumentation amplifier principle used in input stage
MCS+ circuit and current feedback topology in amplification stage
Bridged connection mode allows upgrading to monophonic amplifier
Strong power supply with massive high-efficiency toroidal transformer and large filtering capacitors
4-stage gain control

AAVA volume control for high performance and outstanding sound
Separate power transformers for left and right channels
Selectable preamp gain
Fully modular construction with individual left/right amplifier units on motherboard
Logic-controlled relays for shortest signal paths
Independent phase selection for each input position
Tone controls designed for optimum sound quality
Option board slots provide additional versatility for digital input handling or analog record playback

High-grade SA-CD/CD drive
MDS+ type D/A converter with four parallel devices
Support for playback of DSD discs in DSF file format
Direct Balanced Filter with separate line and balanced signal paths
HS-LINK and USB digital interface
Transport outputs and digital inputs allow insertion of DG-48 into signal path for sound field correction
Phase selector for balanced outputs
Numeric indication of sampling frequency