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Accuphase A-36 Stereo Power Amplifier

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

        Download the Brochure here.

        Download the Fact Sheet here.

         

        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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