Parameters:

Output power:

60WX2 Class A @ 8

120WX2 Class A @ 4

Frequency response: 10HZ-40KHZ

Distortion rate: 0.001%

Load range: 4-8 ohms

Weight: 28KG

Size: 430 wide x 170 high x 409 deep (excluding front and rear handles)

Product introduction:

1: The Accuphase A-75 is a successor to the classic Accuphase A-70. The new technology of Golden Throat has been integrated and some circuits have been improved, and the components have also been upgraded accordingly

 

2: This advanced stereo rear stage uses Mosfet field-effect transistor, with pure Class A amplification output, and the rated output reaches 480 W 2 (1 ),240 W 2 (2 ),120 W 2 (4 ), 60 W 2 (8). 10 groups of balanced "power Mosfet" amplification modules are used for dual channels. The fully balanced amplification technology has the advantages of good symmetry, low distortion, high stability and strong driving force compared with the ordinary amplification technology.

 

3: It is equipped with an upgraded MCS+circuit of MCS, a preliminary buffer amplifier circuit, an improved multi-level parallel circuit design, and the current feedback design to ensure the linear response of each level. The circuit of the amplification unit is connected in parallel to reduce noise. The drive section and the MCS+circuit are equipped with a DC stabilized power supply to improve the S/N ratio and the purity of the sound.

 

4: In order to provide sufficient and stable power supply for the machine, 800VA high efficiency large transformer and two 150000 transformers are used for the power supply F "Big pond" filter group, providing sufficient and stable power supply. The Teflon base material with low inductive rate and low loss rate is used, and the input terminals are mainly gold-plated to improve the sound purity. Super large horn output terminal, convenient for connecting to the hot speaker wire. The front panel adopts the working mode of full digital display machine, which is calculated by DSP digital circuit to display the output power and working state.

 

5:After completing the 1:1 direct engraving machine, we also considered that the direct engraving version could not satisfy most users due to the cost problem. After careful analysis, we think that the general HIFI speakers are rarely used below 4 ohms, and it is a bit wasteful to use ten pairs of output tubes for one channel. After many tests, we feel that when four pairs of output tubes are used in one channel, the thrust and low-frequency control force are quite good. In addition, when the machine is connected with 4 ohm and 8 ohm loads, it can hardly hear the difference with the one by one engraving machine. In this way, while retaining the circuit structure of the machine, only the number of output tubes is reduced, which can greatly reduce various costs. The power transformer uses an 800W ring cow for power supply, and the working voltage of the circuit is the same as that of the original machine. Four pairs (8 field tubes) of K1530/J201 field-effect transistors are used for each sound channel, which are the same as the original. At present, there are 150000 UFX2 filter capacitors. There are power soft start and signal input boards at the bottom. The structure and function of the whole machine are the same as those of the direct engraving machine.

Packing List

1× A75S Power Amplifier

1× Power Cable