This product have 3 options :
Options 1 : Only pcb
Options 2 : 300B kits .You need solder all parts by yourself.It does not include all tubes amplifier.
options 3 : Finished product : The freight is $150 (20KG)
Description:
1. Designed with tube 6SN7 + 300B single-ended output form, the most authentic classic 300B solution.
2. PCB with 2.0mm thick high-quality immersion gold.
3. High SNR, quiet background
4. Circuit is free debugging, making simple.
5. High quality component and parts are used, all are new parts. Coupling capacitor used the best human voice French SCR Suren one; tube bases of 300B are made of 95 ceramic base with special 24K gold-plate contacts, to ensure the PCBA achieving perfect performance.
Product Specifications :
1. PCB size(L * W * T): 203mm * 107.2mm * 2mm
2. Recommend specification of power transformer:
a) Input power: 250W
b) Input: 220V/50Hz
c) Output:
320V - 0 - 320V 330ma
0-5V 4A
0-5V 4A
0-5V 4A
0-6V 4A
3. Recommend specification of power transformer:
a) Primary impedance (kilohms): 3.5K (200mA) or 2.5K, it is made of taps with linear
b) Secondary (Ohms): 0 - 4 - 8
c) Frequency: 20-30K Hz (-2dB)
4. Recommend specification of Choke Coil: 5-8H
5. Recommend vacuum tubes
a) PSVANE HIFI version 300B tube x 2
b) Russia EH 5U4G EH rectifier tube x 1
c) Russia EH 6SN7 EH tubes x 2
Package include:
300B Kits*1pc
Note:
1This prodcut can not be started .If the output transformer do not connect speaker.Otherwise the product will be damage
2.The input voltage of the product is properly connected according to the instruction.It can&x27;t connect error
3 The temperature is very high when 300B tube working ,Caution: Scald
4 After the prodcut is assembled to boot up normal.You can install 300b tube
Buy power transformer link:
Buy output transformer link
Buy Choke electron tube coil link:
300B electronic tubes link :
The case link:
Effect chart :