Description

[The input voltage of all finished machines in this shop can be changed to 110V/115V/117V and other values, and the voltage machine needs to be shipped within 3-4 days after the photo is taken]

This machine is developed with reference to the British Matisse circuit.

Sound quality characteristics: transparent sound, good extension at both ends, excellent high and low frequency performance, flexible low frequency, and slender high frequency.

product details:

◇All parts and components of this product are original products, unpretentious and pure in quality; the use of high-quality original parts not only guarantees safety and quality, but also has a long service life, and more importantly, it is a strong guarantee that the actual performance can reach the design goals.

◇The high voltage of the power supply adopts 5Z4P bladder rectification, which can extend the service life of the electron tube compared with the stone rectification. Two 150UF/450V PHILIPS electrolytic capacitors filter. The filament is powered by AC, and the sound is more lively than DC.

◇Inter-stage coupling capacitors and output capacitors use Sibi copper pin MKP coupling capacitors and Swedish RIFA capacitors, with transparent and delicate sound quality.

◇The resistance uses five-ring metal resistors, and the main circuit adopts a five-ring metal film resistor with an accuracy of ±1%, which ensures a good signal-to-noise ratio of the whole machine.

◇Pure manual scaffold welding, one-point grounding layout, low noise, 90DB speaker 20 times the maximum volume after the maximum volume is 10cm away from the speaker can not hear the bottom noise.

◇The potentiometer adopts the Japanese ALPS 16 type A100K potentiometer.

◇The output power of the power transformer is 75W (the actual power dissipation of the circuit is about 35W, double the power margin), and the filter inductance is 20H 100MA, which effectively suppresses the bottom noise, so the signal-to-noise ratio of the whole machine is high. Both the transformer and the inductor are wound with oxygen-free copper wire, and the silicon steel sheet is made of annealed black sheet with low temperature rise.

◇Outer dimensions of the fuselage: width 310 mm, depth 230 mm, height 150 mm, weight 5 kg.

◇Technology: The chassis is made of a thickened iron box with baking varnish, which is sturdy and durable, with unique solid wood panels and solid wood knobs, which shows the grade.

◇The default delivery is with a new shuguang 12AX7, 12AU7, 5Z4P tube each, and occasionally shuguang will be out of stock and will be replaced with PSVANE.

The circuit diagram is as follows:

Oscilloscope test results:7 times signal amplificationFidelity effectSquare wave test big dynamic effect