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.

Warranty:

1-year manufacturer’s warranty

Features:

  • Pure Class A operation delivers quality power: 30 watts x 2 into 8 ohms
  • Power MOSFET output stage features a 3-parallel push-pull configuration
  • The instrumentation amplifier principle is used in the input stage
  • The amplification stage implements a further evolved MCS+ topology
  • The current feedback principle combines stable operation with outstanding sound quality
  • Bridged connection mode allows upgrading to a monophonic amplifier
  • Strong power supply with a massive high-efficiency transformer and large filtering capacitors
  • 4-stage gain control

Power amplifier with “instrumentation amplifier” configuration
A balanced amplifier is configured with the entire power amplifier, including the signal input stage, realizing balanced transmission of the signal path from the input terminal to the output stage. For this reason, it has excellent performance, such as the ability to remove noise generated in equipment and low distortion, and is resistant to changes in the surrounding environment, further improving stability and reliability as a power amplifier.

Equipped with a more advanced “MCS +” circuit
The power amplifier part is equipped with an “MCS +” circuit that is a further evolution of the Accuphase original MCS circuit, which improves various characteristics by connecting the same circuit in parallel. Increased circuit stability and further noise reduction.

Power MOSFET, 3 parallel push-pull power unit guarantees 120W / 2Ω, 60W / 4Ω, 30W / 8Ω linear power per channel
Equipped with a large heat sink for heat generation by Class A operation. Even in a speaker system with a very low impedance of 1Ω, as a result of designing with a sufficient margin, 150 W / ch (limited to music signals) and a large output power were obtained.

Equipped with a “current feedback” amplifier circuit with excellent high-frequency phase characteristics and sound quality
A “current feedback” amplifier that feeds back the output signal in the form of current. Various characteristics can be greatly improved with a small amount of NFB, excellent dynamic characteristics, such as rising, and natural energy response are possible in terms of sound quality.

Technical Specifications:

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

Note: Load ratings marked (＊) apply only to operation with music signals.

 Stereo operation 150 watts per channel into 1 ohm (＊) (both channels driven) 120 watts per channel into 2 ohms 60 watts per channel into 4 ohms 30 watts per channel into 8 ohms

Monophonic operation (bridged connection): 300 watts into 2 ohms (＊) 240 watts into 4 ohms 120 watts into 8 ohms
Total Harmonic Distortion Stereo operation (both channels driven): 0.05% with 2 ohm load, 0.03% with 4 to 16 ohm load

Monophonic operation (bridged connection) 0.05% 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) (Stereo and monophonic operation)

Gain selection: MAX, -3 dB, -6 dB, -12 dB
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 monophonic operation.
Damping Factor 400
Input Impedance Balanced: 40 kilohms

Line: 20 kilohms
Signal-to-Noise Ratio (A-weighted, with input shorted) 112 dB (GAIN selector at MAX)

120 dB (GAIN selector at -12 dB) at rated continuous average output
Output Level Meters -40 dB to +3 dB (indication in dB and %) Logarithmic scale

Operation selector: OFF / NORMAL / HOLD (∞) Meter sensitivity selector (-20 dB) ＊Monophonic operation: same value displayed for left/right
Power Consumption 155 watts idle

270 watts in accordance with IEC 60065
Maximum Dimensions Width 465 mm (18.31″)

Height 171 mm (6.73″)

Depth 425 mm (16.73″)
Weight 22.8 kg (50.27 lbs) net