Accuphase P-7300 Stereo Power Amplifier

₹ 2,199,999.00

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Ooberpad announces the availability of the dynamic Accuphase P-7300 Stereo Power Amplifier. The P-7300 inherits technology features and concepts of the 40th-anniversary commemorative model A-200 and subsequent M-6200 and takes these notches higher. Some of the highlights are a radical reduction in noise and a significant further improvement of the damping factor. In the final stage, the parallel configuration of output devices ensures high current capacity and keeps the output impedance of the power amplifier extremely low. Additionally, intensive research has culminated in an improved NFB loop with remote sensing, and the use of MOS-FET switches characterized by low 'on-resistance.
This further enhances the ability to handle any speaker with competence, realizing constant-voltage drive even with extremely low load impedances. The guaranteed damping factor of at least 1,000 demonstrates the impressive success of this approach. Not just that, by further refining the parallel drive and gain allocation of the input stage, Accuphase engineers were able to push the noise floor to previously unthinkable levels, achieving a remarkable signal-to-noise ratio of 125 dB at maximum gain and 131 dB at the –12 dB gain setting.

Warranty

1-year manufacturer's warranty

Key Features:

  • Output stage with 10-parallel push-pull arrangement in each channel delivers ample power down to extremely low load impedances of 1 ohm
  • Amplification stage features low-noise instrumentation amplifier topology
  • Further refined MCS+ circuit
  • Current feedback principle combines excellent sound quality with total operation stability
  • Bridged connection mode allows upgrading to monophonic amplifier
  • 4-stage gain control
  • Newly developed massive toroidal transformer with high power capacity

Benefits of Accuphase P-7300 Stereo Power Amplifier:

Low Noise Instrumentation Amplifier
Low Noise Instrumentation Amplifier

The balanced input stage circuitry features Instrumentation amplifier topology such as used in high-precision measuring equipment. To achieve ultra low noise, the input stage gain is set to a high value, which in turn allows using a high power supply voltage so that distortion at large amplitudes is eliminated. Signal purity is further elevated by the use of ultimate-quality fully discrete components.

Further refined MCS+ topology for even lower noise
Further refined MCS+ topology for even lower noise

Accuphase's original MCS (Multiple Circuit Summing) principle uses a number of identical circuits connected in parallel to achieve superior performance characteristics. MCS+ is a further refined version of this approach, which extends the parallel operation approach to the class-A drive stage of the current/voltage converter, thereby further lowering the noise floor.

Current feedback circuit topology assures excellent phase characteristics in high range

In the P-7300, the signal current rather than the more conventionally used voltage is used for feedback. Since the impedance at the current feedback point is very low, there is almost no phase shift. Phase compensation can therefore be kept at a minimum, and a slight amount of NFB results in maximum improvement of circuit parameters. Operation remains perfectly stable throughout, which is especially important for a power amplifier that has to handle signals ranging from minute to highly dynamic levels.

Newly developed massive high-power toroidal transformer

The P-7300 features a newly developed massive high-power toroidal transformer, enclosed in an aluminum housing with excellent thermal conductivity and superior vibration damping characteristics. The amplifier offers a choice of line inputs and balanced inputs that effectively shut out external noise interference.

Where to buy?
Buy the Accuphase P-7300 Stereo Power Amplifier online at the best price in Mumbai, Delhi, Bangalore, Chennai and all across India. Enjoy expert, prompt and courteous customer service from the Ooberpad team. We will help you choose better and give you all the support you need to take the right buying decision in India.

Technical Specifications of Accuphase P-7300 Stereo Power Amplifier:

Brand & Model # Accuphase P-7300
Continuous Average Output Power (20 - 20,000 Hz)
  • Stereo operation: 800 watts per channel into 1 ohm (*) (both channels driven) 500 watts per channel into 2 ohms 250 watts per channel into 4 ohms 125 watts per channel into 8 ohms
  • Monophonic operation: 1,600 watts into 2 ohms (*) (bridged connection) 1,000 watts into 4 ohms 500 watts into 8 ohms
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
Inputs/Outputs
  • 0.01%
    Frequency Response
    • At rated continuous average 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 (GAIN selector in MAX position) (Stereo/monophonic operation)
    Gain Selection
    • –12 dB, –6 dB, –3 dB, MAX
    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.
      Input Sensitivity (with 8-ohm load)
      • Stereo operation: 1.26 V for rated continuous average output 0.11 V for 1 watt output
      • Monophonic operation: 2.52 V for rated continuous average output 0.11 V for 1 watt output
      Input Impedance
      • Balanced: 40 kilohms
      • Line: 20 kilohms
      Signal-to-Noise Ratio (A-weighted, with input shorted)
      • 125 dB (GAIN selector in MAX position)
      • 131 dB (GAIN selector in –12 dB position)
      Output Level Meter
      • –40 dB to +3.0 dB (indication in dB and %)
      • Logarithmic scale, with illumination off switch and sensitivity
      • Peak hold time switchable 3 s, ∞
        Power Consumption
        • 117 watts idle
        • 820 watts in accordance with IEC 60065
        Maximum Dimensions
        • Width 465 mm (18-5/16")
        • Height 238 mm (9-3/8")
        • Depth 515 mm (20-9/32")
        Weight
        • 48.6 kg (107.2 lbs) net

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