Amplificator de putere Accuphase A-200

Full Description

Overview

Eminently capable pure Class A monophonic power amplifier with power MOS-FET technology – Ultra-low-noise double instrumentation amplifier configuration enables fully balanced signal transmission, augmented by double MCS+ circuit and current feedback topology. Experience astounding S/N ratio and impeccable sound quality on a level that has to be heard to be believed. A hefty power supply and 20 power MOS-FETs arranged in a parallel push-pull configuration deliver 1,000 watts (music signal) into an ultra-low 1-ohm load. Output stage with further lowered impedance results in a damping factor of 1,000.

 

Specs

Continuous Average Output Power (20 – 20,000 Hz):

Normal mode:

800 watts into 1 ohm (＊)

400 watts into 2 ohms

200 watts into 4 ohms

100 watts into 8 ohms

Bridged mode:

1,600 watts into 2 ohms (＊) (using two A-200 units)

800 watts into 4 ohms

400 watts into 8 ohms

 

Total Harmonic Distortion:

0.05% with 2 ohm load

0.03% with 4 to 16 ohm load

 

Intermodulation Distortion: 0.01％

 

Frequency Response :

At rated output: 20 – 20,000 Hz ＋0, －0.2 dB

At 1 watt output: 0.5 – 160,000 Hz ＋0, －3.0 dB

 

Gain: 28.0 dB (with GAIN selector at MAX)

 

Gain Selection: MAX, －3dB, －6dB, －12dB

 

Output Load impedance:

Continuous output: 2 to 16 ohms

With music signal: 1 to 16 ohms

 

Damping Factor: 1000

 

Input Sensitivity (with 8-ohm load):

1.13 V for rated continuous average output

0.11 V for 1 watt output

 

Input Impedance:

Line: 20 kilohms

Balanced: 40 kilohms

 

Signal-to-Noise Ratio (A-weighted, input shorted):

126 dB (GAIN selector at MAX)

132 dB (GAIN selector at －12 dB)

At rated continuous average output

 

Output Level Meters :

Digital meter: 5-digit indication showing true power (W)

Range :selection 10 W / 100 W / 1,000 W

Bar graph meter: Represents output voltage values (dB) using 40 points

Peak hold time: 1 second / infinite (selectable)

Display off switch provided

 

Power Requirements:

120/220/230 V AC, 50/60 Hz

 

Power Consumption:

300 watts idle

400 watts in accordance with IEC 60065

※ 230 V version has an Eco Mode