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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