Nov 22, 2021 · The gain of 6N3P is 24.6 dB in SRPP circuit. It is not possible to reduce it by changing the cathode resistors. The only possibility is to use a lower μ tube. The μ of 6N3P is 36. 6DJ8/ECC88 would give about the same gain.

Feb 26, 2012 · 2 troids in one 6N3P forms SRPP voltage amplificier. A 6N5P cathode follower is used as driving stage. It can drive headphones from 32 Ohm to 600 Ohm very well.

Nov 14, 2012 · It may be used as an amplifier, mixer, oscillator or multivibrator over a frequency range AF through VHF. 6N3P was widely used for FM band radio input unit stages (nearly all 1960s Soviet radios with FM band employed the same input unit on a separate subchassis).

A six-lamp, two-stage, low-frequency stereo amplifier built on low-cost and affordable 6N3P and 6P1P tubes. Output power is about 3.5W per channel. Load resistance 4-16Ω.

Jun 13, 2010 · The input and driver stage can be GC ('grounded' (unbypassed) cathode, SRPP or Cascode. The SRPP and Cascode can be SRPP+ or UL Cascode courtesy of TubeCad's papers. My idea is to use 7mA on the input 6N3p and 15mA on the driver 6N6p to get them linear.

Sep 9, 2013 · It is known as 6N3P-DR and 6N3P are often made by Reflector (but also Foton and October). The Western Electric is relatively common and still decently priced. The 5670 are excellent (I especially like the GE 5* and RCA Command).

A six-lamp, two-stage, low-frequency stereo amplifier built on low-cost and affordable 6N3P and 6P1P tubes. Output power is about 3.5W per channel. Load resistance 4-16Ω. Separate, per channel volume control Current consumption: Anode 300V, not more than 80mA . Heater 6.3V, not more than 2.8A The board size: 125 x 80 mm

Feb 4, 2016 · 6N3 is a rectifier but the 6N3P is similar to the 5670. Looking at the plate curves of the 5670 and the 6N3P, the 5670 looks like it would be much more linear. I use the 5670 very succesfully in a "El Cheapo" type amp.

The LiquaTube TM 5670 Preamplifier/DAC uses SRPP tube pre-amplification that features two Wathen CryoTone 5670 tube. This incredible sounding unit comes with two USA made Wathen CryoTone 5670 tubes and two Russian made CryoTone 6N3P-WC tubes.

Dec 30, 2017 · First, as the schematic suggests, this is called an SRPP circuit. And while it does not need many components it can be a difficult beast in some respects. For instance, it works best with well-defined output impedances. The upper and lower triodes should be matched.