version 1: US Teflon Ferry Silver Link
version 2: American Teflon silver plated wire link with tube shield
version 3: Increase the power transformer and use 0.35 pieces, the heat is lower! Guaranteed! More dynamic!
version 4:Bluetooth version

Product Description

1.6c19 is the transistor with low internal resistance in the thumb tube, and the high power #40;6W#41; 6p1 6p14 6p15 6p6 6F1 6F2 6F3 These tubes are only 3-5W, if the circuit is used properly, the output technology is good, you can say this It is a very rare good tube!

2. The internal resistance of the transistor 6C19 is only 300Omega; on the thumb tube, the power can reach 6W. The bass effect of such a small tube is so shocking, this is the characteristic of 6C19! The sound is comparable to 300B!

3. Pure manual scaffold welding, using one of the high-fever circuit forms of 300B, that is, the first-level pentode preamplifier and the first-level power tube output. Choose the small heptode 6J1 of the pentode.

4. Due to the relatively high negative voltage of the gate of 6C19, a higher driving voltage is required, so a pentode 6J1 with higher transconductance, larger screen consumption, and larger anode current is used to push 6C19.

The characteristics of 5.6C19 are completely comparable to 2A3 300B. The key lies in the reasonable choice of working conditions. The internal resistance of 6C19 is lower than 2A3, but the transconductance is higher than 2A3, and the seventeenth magnification factor is slightly lower than 2A3. This means that 6C19 is more difficult to drive. !

6. 6C19 filament 6.3V1A, the volume is the same as 6P1 general size 6P1 filament current: 0.5A 6P6P filament current 0.5A Even though the 6P3P filament current is several times larger than 6C19, it is only 0.9A. It can be seen that the current in the thumb tube is large, and the internal resistance is even higher. 13PXFF08; 460Omega, XFF09 is even lower, which is 300Omega; tubes with low internal resistance, the lower the internal resistance of the tube, the better it sounds, such as 6N5P6P13P300B, etc.,

7. Panel flow 110mA tube consumption 11W
It is a rare transistor 6C19 that can be used as a power amplifier in the thumb tube. The sensitivity is low and the negative voltage of the grid is high. Therefore, a higher amplitude voltage is required to drive it.

8. This machine uses 1 power supply cow, 2 output cows, an inductor, a total of 4 transformers


Product parameter

Rated output power: 6W*2

Frequency response: 20Hz--25KHz

Total harmonic distortion: 1%#xff08;1kHz#xff09;

Input sensitivity: 500mV--2000mV

Input impedance: 100KOmega;

Output impedance: 4Omega;, 8Omega;

Signal to noise ratio: 88DB


All internal wires are connected with Teflon silver-plated wires, the filter capacitor is Philips from the Netherlands, and a high-precision metal film five-ring resistor made in Taiwan! The secondary filter is Korean Sanying or Japanese Ruby Inductance filter, the bottom noise is very small, only close to the speaker can be heard!

U.S. Teflon silver-plated wire connection

American oil immersed coupling capacitor

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