2021 new KGUSS 6n9p launches el34b single-ended class A tube power amplifier fever finished machine | Электроника

2021 new KGUSS 6n9p launches el34b single-ended class A tube power amplifier fever finished machine | Электроника

2021 new KGUSS 6n9p launches el34b single-ended class A tube power amplifier fever tube amplifier finished machine


6n9p+EL34-B finished tube amplifier, 8w+8w including bottom plate, using ALPS potentiometer 100k, using full 0.33uf capacitor for coupling, tube 5U4c 6h9c using Soviet stock new tube, EL34 brand new


The following is a detailed description of this machine:

1: Voltage amplification uses the new stock 6h9c in the early years as the pre-voltage amplification. The circuit features: high speed and low distortion, small coupling capacitance, small phase shift, fast response, low distortion, large dynamics, good stability, and faithfulness Amplify the wide-range signal of the CD player to reproduce the natural sound field space.

2: The power output tube uses the brand new aristocratic EL34-B, the EL34 tube is very good, the sound is smooth and delicate, warm and full, and the EL34-B is g1 and g2 accurately on the grid. It belongs to a beam tetrode, which is suitable for manufacturing power amplifiers with moderate power. Compared with KT88, its sound is more delicate, sweet and expressive. The music tastes good, not as straightforward as the EH tube, the music has a very good sense of fluctuation and rhythm, and the sound field positioning is very good. The sound thickness is also right, and the resolution is also good.

3: The rectifier tube uses the brand new 5u4c as the rectifier. The rectifier can slow down the current impact, especially when the filter capacitor capacity is selected larger, it can effectively avoid the aging of the cathode of the indirectly heated electron tube. Maintain the pure bloodline of the tube amplifier, and the sound is more durable.

4: Regarding the output transformer core, the H250 76*40 0.35 imported audio special high-silicon cold-rolled silicon steel sheet is used, the permeability is above 10,000, the surface is smooth and neat, it is wound by a 4-fold 3-layer winding method, and is vacuum dipped. Core size: EI-76*40 stack thickness: passband: 20HZ-30KHZ. Because a large part of the cost of the tube amplifier is on the output transformer, the so-called cow is always looking for a balance between distributed capacitance, leakage inductance, DC resistance, and inductance. Only a good output transformer can give full play to the performance of the tube amplifier, and only the output with full materials can be matched with the sound quality of the electronic tube. In order to meet the requirements of audio transformers with good high-frequency band frequency response characteristics. We keep the leakage inductance and distributed capacitance of the winding wire package as small as possible. For this reason, we adopt a layered winding method for the primary side wire package to reduce the leakage inductance and distributed capacitance of the transformer. The wire package is wound with high-purity pure copper enameled wire, and aluminum wire and copper-clad aluminum wire are rejected to ensure perfect sound reproduction. Furthermore, the temperature rise of the transformer can be effectively controlled to provide continuous power for the system! !

5: About the power transformer The tube amplifier is a Class A power amplifier, which requires a large power supply and has a large no-load current. At low frequencies, the power consumption of the power transformer will increase significantly. If the power of the transformer is not enough, the sound quality will be obviously affected! In order to ensure the perfect sound quality output, we use a 160W power transformer to ensure the sound quality is more perfect in large dynamics. Wire package is wound with high-purity pure copper enameled wire

All use manual scaffolding welding, the ears are attached to the horn and the volume is turned on to hear a little bit of the bottom noise of the tube! (The noise after the volume is turned on has a great relationship with the quality of the signal cable and sound source used)

technical parameter
Output power:-------8W×2
Harmonic distortion:-------≤1%
Signal to noise ratio:-------≥89dB
Input sensitivity: ----600mV-2V
Input impedance: ------- 100KΩ (stereo input)
Output impedance: ------4Ω8Ω
Frequency response: ------20Hz-26KHz
Distortion rate:-------≤0.5% (1kHz)
Rectifier: -----5u4c
Voltage amplifier tube: -----6h9c
Power amplifier tube: -----EL34-B
Power transformer: ----- 96*50(160W)
Output transformer: ---- 76*40 (4 clamps 3 winding method)
Choke coil: --(5H) 76*40
Power supply:------- AC~220V/50Hz
Net weight:-------9.5KG, gross weight 12kg
Size: -------- length 38cm width 17cm height 160cm with gallbladder
Special note

The amplifier should be equipped with speakers with a sensitivity above 90db. The effect of bass lama above 6.5 inches is good, and the effect below 86 87db is poor. The amplifier must be equipped with speakers and the effect is very good.