6N2P-ER (original box)

 The 6N2P-ER (6H2П-EP rus.) tube are a replacement for 12AX7 in any typical amp application, but they have 6.3V heater voltage and would need a different wiring than stock 12AX7’s. Designed to amplify low frequency voltage. It is used in pre-amplification cascades on resistances.

The 6N2P-EP can be a replacement for 12AX7 and ECC83 tubes. Key differences:
1. Heater: requires 6.3V versus 12.6V (12AX7/ECC83).
2. Current: consumes ~ 340mA versus 300mA (12AX7).
3. Different connection scheme.
AT THE SAME TIME, it has a similar gain (~97.5), a cleaner sound with extended highs, tighter bass, and less noise/microphony.

E – the letter characterizing the increased durability of the tube;
R – characterizing the increased reliability of the tube.

• Stamp of technical control department of the manufacturer ” ОТК “

Technical specifications:

• Filament voltage: 6.3 ± 0.6V
• Filament current: 340 ± 25mA
• Anode voltage nominal (constant): 250V
• Anode voltage limit (constant): 300V
• Anode current of each triode: 2.3 ± 0.9mA
• The cathode current of each triode is limiting: 10mA
• Grid voltage (constant): -1.5V
• Reverse grid current of each triode: 0.2μA
• Power dissipated by each anode: limit 1W
• The voltage between the cathode and the heater limit (constant): 100V
• Voltage between anodes no more than: 2V
• Slope of each triode: 2.1 ± 0.5mA/V
• Gain of each triode: 97.5 ± 17.5
• Resistance in the grid circuit is limiting: 0.5MOhm

Operating time not less than 10000 hours.