A-36 Stereo Power Amplifier
A-36 Stereo Power Amplifier
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A-36 Stereo Power Amplifier

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Accuphase 

A-36 Stereo Power Amplifier

The new A-36 inherits many of the outstanding design technology features developed for the higher-end models. It redefines the baseline for pure class A power amplifiers and represents the same unwavering attention to detail and dedication to sound quality for which Accuphase is justly famous.
In the output stage, power MOS-FETs renowned for their excellent frequency response, sonic performance, and superior reliability are used in a triple parallel configuration and driven in pure class A. This is sustained by the strong power supply featuring a massive transformer and two large 47,000μF filtering capacitors. Output power in each channel is rated for an impressive 150 watts into 1 ohm, 120 watts into 2 ohms, 60 watts into 4 ohms, and 30 watts into 8 ohms. Even speakers with ultralow impedance or drastic fluctuations in impedance curve can be driven reliably by this impressive amplifier.
In the output circuitry, MOS-FET switches are used in place of relays, to eliminate mechanical contacts and improve long-term reliability.

  • Pure Class A operation delivers quality power: 30 watts x 2 into 8 ohms
  • Power MOSFET output stage features 3-parallel push-pull configuration
  • 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
  • Strong power supply with massive high-efficiency transformer and large filtering capacitors
  • 4-stage gain control

 

 

 

 

Continuous Average Output power (20-20,000 Hz)

Stereo Operation (both channels driven): 

150 W/ch = 1-ohms load *

120 W/ch = 2-ohms load

60 W/ch = 4-ohms load

30 W/ch = 8-ohms load

Monophonic Operation:

300 watts = 2 ohms load*

240 watts = 4 ohms load

120 watts =  8 ohms load

Notes:

Ratings marked. with * are for music signals only

Total Harmonic Distortion

Stereo operation ( both channels driven )

0.05% with a 2-ohm load

0.03% with a 4 to 16-ohm load

Monophonic operation (bridged connection)

0.05% with a 4 to 16 ohm load

Intermodulation Distortion 0.01% 
Frequency Response

At rated continuous average output: 20 - 20 000 Hz + 0 - 0.2dB

At 1 watt output: 0.5 - 160000Hz +0 - 3.0dB

Gain

28.0dB ( GAIN selector in MAX position)

(Stereo/monophonic operation)

Gain Selector

MAX, - 3dB, -6dB, -12dB

Output Load Impedance

Stereo Operation: 2 to 16 ohms

Monophonic Operation: 4 to 16 ohms

* With music signals only, 1-ohm loads are permissible for stereo operation and 2-ohm loads for bridged operation.

Damping factor 400
Input Sensitivity ( with 8-ohm load)

 

Stereo Operation

0.62V for rated continuous average output

0.11V for 1 watt output

Monophonic Operation

1.23V for rated continuous average output

0.11V for 1 watt output

Input Impedance

Balanced: 40 Kilohms

Line (unbalanced): 20 Kilohms

Signal-to-Noise Ratio

(A-weighted, with input shorted)

112dB (GAIN selector in MAX position)

120dB (Gain selector in  -12dB position)

At rated continuous average output

Output Level Meter

-40dB to +3dB ( indication in dB and %)

Logarithmic scale

Operation selector: OFF / NORMAL / HOLD

Meter sensitivity selector (-20dB)

*Monophonic operation : same value displayed for left / right

 

Power Requirements

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

(Voltage as indicated on rear panel)

Power Consumption

155 watts idle

270 watts in accordance with IEC 60065

Maximum Dimensions

Width: 465mm (18.31")

Height: 171mm (6.73")

Depth: 425mm (16.73")

Mass

22.8kg (50.27 lbs) net

29.0kg (63.93 lbs) in shipping carton

 

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