Последняя версия односторонний высокомощный трубчатый усилитель первого класса

Product description:

1. The EA-S211 developed by EASE AUDIO draws on the circuit architecture of the ONGAKU 211 single-ended machine of KONDO. In fact, satisfactory results have been achieved.

2. The EA-S211 level uses the famous tube 12AY7 for SRPP amplification, which also obtains sufficient gain and low distortion. The second stage uses one-half of 5687 as a common cathode amplification resistor-capacitor coupling to the third stage, and the other half of 5687 as a third-stage cathode output drive 211. Why use 5687? Because the internal resistance of 5687 is low enough, the linearity is good enough, the magnification factor is large enough, the screen consumption is high enough, and the screen flow is large enough. A small peanut tube filament reached an amazing 6.3V/0.9A. Its cathode emission capability is unmatched by other peanut tubes. So it can give 211 a better boost.

3. In terms of high-voltage power supply, we used 4 5AR4 full-blade rectifiers. CLCLC double current loop and three-stage capacitor filter to ensure clean high voltage. In terms of filament power supply, the front-stage tube uses an AC filament to supply power. Two 211s use DC power supply. To reduce the residual noise. To make the background quieter, each 211 uses 4 60A high-speed low-dropout Schottky tubes for rectification, and CLCLC structure filtering. The capacity of each 211 filament filter capacitor is as high as 39900UF. Give people enough confidence.

4. The signal channel uses a relay switch, and the relay is close to the input terminal, making the selection channel shorter and more direct. And the motor potentiometer integrates the remote control function. Realize channel switching and volume control. Convenient for users to control without being able to.

5. In terms of materials, the power transformer and the ring are used for 35JGH155 high permeability and low loss oriented silicon steel sheet of Kawasaki Steel. Potting is moisture-proof to ensure adequate performance. Taiwan copper feet high-precision low-noise metal film resistors, Philips high-voltage filter capacitors, Nikon high-voltage capacitors, Nikon filament filter capacitors, Lilong axial filament filter capacitors. American CDE coupling capacitor, Spey black widow capacitor. ALPS motor potentiometer, silver-plated electronic tube holder, silver-plated circuit board, Taiwan JR pure copper gold-plated input and output terminals. Silver contact sealed switching relay, imported audio dedicated signal line, British internal line, multi-strand multi-channel internal power cord, output line, diameter up to 8MM. The silver solder wire, even the remote control and the key switch of the panel are used for the original ALPS light touch switch to ensure the durability of use. Wait for different materials.

Product material description:

1. The main body of the chassis is 1.5mm thick 304 mirror stainless steel, and the champagne gold panel is a 16mm double-layer aluminum plate. The solid aluminum knob has a good feel, and the back plate is also an 8mm aluminum plate. Bull cover is 2.5mm die-cast

2. The surface is sprayed with black piano paint, sleek and beautiful. The black porous mesh cover effectively separates the fragile and hot bile ducts from the outside world. It does not affect the heat dissipation of the bile duct but also ensures the safety of both parties. The 2mm bottom plate provides enough support for the entire machine of 32KG. Champagne gold's all-aluminum remote control also has good coordination with the machine.

3. The machine has high output power, good dynamics, rich feelings for listening to human voices, and detailed descriptions. Listening to the orchestral music is melodious and free and easy, the violin is tightly threaded, and the cello is full of toughness. Listen to the jazz rhythm, clean and tidy. Listen to the symphony with ease, sometimes lightning and thunder, and sometimes wind blowing. As the saying goes, it's like a virgin and moving like a rabbit. What the symphony wants is this feeling of ups and downs. I won’t say too much about these feelings, so that you can experience it by yourself.

4. The parameters of this machine are real and measured. They are not false standards. Some single-ended machines will be distorted by 1% at full power. The performance-to-noise ratio will be around 90 DB, and the frequency response will be 10HZ-30KHZ. This is actually complete. unrealistic.

Product parameters:

Input impedance: 100K

Input sensitivity: 300mv

Output power: 23W+23W (distortion 10%)

Frequency response: 23HZ-23KHZ (15W)

Signal to noise ratio: 83DB

Use electronic tubes: 12AY7 *2 (imported from EH Russia), 5687 *2 (imported from Raytheon or Xiwannian U.S.), 211 *2 (Voice), 5AR4 *4 (imported from EH Russia)

Weight: 40KG

Whole machine power consumption: 500W

Power fuse 5A (time-delay fuse)

Size: L420*W410*H240 MM

Does not include knobs, terminals, machine feet and other protrusions

Note:The product does not include a power cord!