SUQIYA-Hotan Maos 6Z4 12AX7 Tube Preamp Wada Regulated FET 2SK1170 12AX7 ECC83 ECC82 Tube Preamplifier Power Amplifier Audio

The sound characteristics of this machine: three-stage equalization, the intermediate frequency is sweet and round, the high frequency is delicate, and the low frequency has a good sense of quantity, which is suitable for listening to human voices.

 

After continuous improvement and optimization, we have launched a new Hotan Mao’s tube preamplifier in a small chassis. Because of its good sound, the high-voltage voltage regulator follows the original Japanese Kubota circuit design. It has the advantages of low output internal resistance, high-voltage power supply delay, stable voltage, comprehensive medium and high frequency performance, and soft and sweet sound.LM317 filament delay power supply, the classic amplification line is well known to everyone, and will not be introduced here.

 

Tips for use: When burning friends are used with the post-amplifier of the stone machine, because the tube filament of the preamplifier needs to be preheated, the preamplifier is turned on for 50 seconds before the post-amplifier is turned on; the post-amplifier is turned off first and then the preamplifier is turned off, so that there will be no impact.

 

1. The power supply part adopts 6Z4 dual tube rectifier. Those who are pursuing the upgrade can switch to the Russian 6U4N. If you have the ability to remove the jumpers J1, J4, and install J2, J3, you can use the 6X4 rectifier tube. This can save tens of yuan in the conversion seat and take the sound quality to the next level. Japan’s Kubota-style high-voltage voltage regulator circuit, field effect tube 2SK1170 power supply tube, a good bile machine high-voltage delay voltage regulator circuit, with low internal resistance and stable voltage advantages, it can be said to be a military-grade voltage regulator, voltage The fluctuation does not exceed 1V.

 

2. Genuine Japanese-made ALPS27 volume potentiometer, this potentiometer feels good and durable, Taiwan-made all-copper RCA input and output base, the power supply cow uses imported iron core and domestic copper wire EI cow, the power supply cow and the voltage regulator circuit are the heart of the bile pre-stage, and the conditions for good sound need to be met

 

3.The signal line in the machine adopts genuine original Kanaimei signal line imported from Japan, which has a good transmission signal. Except for 4 capacitors, 8-9% of the new authentic German disassembled Weima, all others use genuine brand new imported capacitors, Japanese chemical industry, Philips BC159, German Smurfs, etc.

 

4. The timbre of Wada circuit is well known. Needless to say here, it has analytical power, musical taste, high and low frequency response, good signal-to-noise ratio, and complete taste. It is a very comprehensive pre-gall stage. It can be said that listening to music is a bit of a buckle, and it is poisoned when you listen to it!!!

 

5. Fever-grade double-sided PCB military tin-sprayed board design

 

6.Chassis size: 240*320*90mm; net weight: 5KG, gross weight: 6KG

 

7.Technical parameters:

 

(1) Frequency response: 5Hz-30kHz (no load), note: the American ATS-2 AP tester can only measure 30KHZ, the actual machine should exceed 50KHZ; 20HZ-33KHZ (with 3.3K load)

 

(2) Distortion: 0.012% (1KHZ, output 1V)

 

(3) Magnification: 14 times

 

(4) The maximum output is 14V ((with 3.3K load)

 

(5) Signal-to-noise ratio: 92dBu

 

(6) Sensitivity: -58dBu

 

(7) Input impedance: 100K

 

8. Piping of this machine: Piping of this machine: Shuguang 6Z4*2, PSVANE ECC83*2, ECC82*2 (ECC81*2 is also available) Note: The shipping piping depends on the package selected above, and the package that does not contain the tube is shipped without the tube.

Note: This unit does not include any cables