About
Ooberpad announces the availability of the feature-packed Accuphase A-250 Class-A Monophonic Power Amplifier. Ultra-low-noise design with an unprecedented S/N ratio of 127 dB brings out a superb wealth of detail. Semiconductor MOS-FET switches facilitate output circuitry without any mechanical contacts. Two pure class-A power units arranged right and left are driven in parallel to render 100 watts into 8 ohms with superb quality. A damping factor in excess of 1,000 means that speaker control is nothing less than perfect. The huge A-250 embodies a new pinnacle in power amplifier history. Encounter music in the most surreal way.
Warranty
1-year manufacturer's warranty
Key Features:
- Pure Class A operation delivers 100 watts of quality power into 8 ohms
- Two totally identical power amplifier units driven in parallel
- 20-parallel push-pull arrangement of MOS-FET devices in the output stage delivers linear high power progression to ultra-low 1-ohm impedance
- Input section configured as a dual instrumentation amplifier
- Double MCS+ circuit and current feedback topology in the amplification stage
- Support for bridged use of two A-250 units for even higher output power
- Strong power supply with a massive high-efficiency toroidal transformer and large filtering capacitors
Benefits of Accuphase A-250 Class-A Monophonic Power Amplifier:
Fully Balanced Signal Paths
The A-250 features fully discrete circuit components in a dual configuration employing the latest instrumentation amplifier topology, allowing all signal paths throughout the power amplifier to be fully balanced. This not only eliminates any possible internal sources of noise or distortion as demonstrated by the outstanding performance ratings, it also makes the amplifier highly impervious to changes in ambient conditions. Consequently, operation stability and reliability which are crucial for a power amplifier have been dramatically enhanced.
Double MCS+ (Multiple Circuit Summing) in the amplifier stage realizes the highest-ever signal/noise ratio in an Accuphase component
The Double MCS+ configuration uses four circuits for amplifying the input signal, connected in parallel to keep distortion to a minimum and to further enhance S/N ratio and other parameters. The resulting level of sound quality is simply stunning.
Two totally identical power amplifier units driven in parallel
As shown in the circuit diagram of the amplifier section, the power amplification stage makes use of two completely identical power units, each with 10 N-channel and 10 P-channel power MOS-FETs connected in parallel. These units are arranged on the left and right sides of the chassis and driven in parallel, resulting in a 20-parallel configuration. This ensures a stable balance in terms of electrical operation, weight distribution, thermal dissipation, and other aspects. The parallel drive approach achieves a total allowable power dissipation value of 5.2 kW, which in turn reduces the power load on each MOS-FET, allowing each device to operate effectively in its range of optimum linearity
Where to buy?
Buy the Accuphase A-250 Class-A Monophonic 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 A-250 Class-A Monophonic Power Amplifier:
| Brand & Model # | Accuphase A-250 |
|
Continuous Average Output Power (20 - 20,000 Hz) |
|
| Total Harmonic Distortion |
|
| Inputs/Outputs |
|
|
Frequency Response |
|
| Gain |
|
| Gain Selection |
|
| Output Load Impedance |
|
| Input Sensitivity (with 8-ohm load) |
|
| Input Impedance |
|
| Signal-to-Noise Ratio (A-weighted, with input shorted) |
|
| Output Level Meter |
|
| Power Consumption |
|
| Maximum Dimensions |
|
| Weight |
|
Ooberpad announces the availability of the feature-packed Accuphase A-250 Class-A Monophonic Power Amplifier. Ultra-low-noise design with an unprecedented S/N ratio of 127 dB brings out a superb wealth of detail. Semiconductor MOS-FET switches facilitate output circuitry without any mechanical contacts. Two pure class-A power units arranged right and left are driven in parallel to render 100 watts into 8 ohms with superb quality. A damping factor in excess of 1,000 means that speaker control is nothing less than perfect. The huge A-250 embodies a new pinnacle in power amplifier history. Encounter music in the most surreal way.
Warranty
1-year manufacturer's warranty
Key Features:
- Pure Class A operation delivers 100 watts of quality power into 8 ohms
- Two totally identical power amplifier units driven in parallel
- 20-parallel push-pull arrangement of MOS-FET devices in the output stage delivers linear high power progression to ultra-low 1-ohm impedance
- Input section configured as a dual instrumentation amplifier
- Double MCS+ circuit and current feedback topology in the amplification stage
- Support for bridged use of two A-250 units for even higher output power
- Strong power supply with a massive high-efficiency toroidal transformer and large filtering capacitors
Benefits of Accuphase A-250 Class-A Monophonic Power Amplifier:
Fully Balanced Signal Paths
The A-250 features fully discrete circuit components in a dual configuration employing the latest instrumentation amplifier topology, allowing all signal paths throughout the power amplifier to be fully balanced. This not only eliminates any possible internal sources of noise or distortion as demonstrated by the outstanding performance ratings, it also makes the amplifier highly impervious to changes in ambient conditions. Consequently, operation stability and reliability which are crucial for a power amplifier have been dramatically enhanced.
Double MCS+ (Multiple Circuit Summing) in the amplifier stage realizes the highest-ever signal/noise ratio in an Accuphase component
The Double MCS+ configuration uses four circuits for amplifying the input signal, connected in parallel to keep distortion to a minimum and to further enhance S/N ratio and other parameters. The resulting level of sound quality is simply stunning.
Two totally identical power amplifier units driven in parallel
As shown in the circuit diagram of the amplifier section, the power amplification stage makes use of two completely identical power units, each with 10 N-channel and 10 P-channel power MOS-FETs connected in parallel. These units are arranged on the left and right sides of the chassis and driven in parallel, resulting in a 20-parallel configuration. This ensures a stable balance in terms of electrical operation, weight distribution, thermal dissipation, and other aspects. The parallel drive approach achieves a total allowable power dissipation value of 5.2 kW, which in turn reduces the power load on each MOS-FET, allowing each device to operate effectively in its range of optimum linearity
Where to buy?
Buy the Accuphase A-250 Class-A Monophonic 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 A-250 Class-A Monophonic Power Amplifier:
| Brand & Model # | Accuphase A-250 |
|
Continuous Average Output Power (20 - 20,000 Hz) |
|
| Total Harmonic Distortion |
|
| Inputs/Outputs |
|
|
Frequency Response |
|
| Gain |
|
| Gain Selection |
|
| Output Load Impedance |
|
| Input Sensitivity (with 8-ohm load) |
|
| Input Impedance |
|
| Signal-to-Noise Ratio (A-weighted, with input shorted) |
|
| Output Level Meter |
|
| Power Consumption |
|
| Maximum Dimensions |
|
| Weight |
|
Accuphase A-250 Class-A Monophonic Power Amplifier
