What is 6P3S-E Vacuum Tube?
The 6P3S-E tube is a robust power tetrode, primarily known for its role in audio amplification. This Soviet-era vacuum tube is a military-grade variant of the popular 6P3S, offering enhanced reliability and an extended lifespan, making it a favorite among audiophiles and guitar amplifier enthusiasts. Its sturdy construction and consistent performance have cemented its reputation as a workhorse in various electronic applications, particularly where stable power output is crucial.
For those seeking detailed 6P3S-E tube data and comprehensive specifications, numerous resources highlight its excellent linearity and power-handling capabilities. This tube excels in the output stages of both single-ended and push-pull amplifier designs, delivering rich, warm tones that are highly sought after in vintage audio equipment. Many designers and hobbyists refer to 6P3S-E tube reviews to understand its sonic characteristics and application nuances, often praising its balanced sound profile and reliable operation.
The 6P3S-E tube is often considered a direct equivalent to the widely recognized 6L6GC, 5881, and 6L6GT tubes. This interchangeability makes the 6P3S-E a popular choice for replacing or upgrading existing circuits designed for these Western counterparts, providing a reliable and often more affordable alternative without compromising on performance. Its versatility and robust design ensure it remains a significant component in the world of vintage electronics.
What Are the Popular Equivalents of the 6P3S-E Tube?
How does 6P3S-E compare to 6L6GC?
The 6P3S-E is a rugged Soviet equivalent of the 6L6GC, offering similar electrical ratings and octal pinout, making it a reliable replacement in guitar amplifiers and hi-fi audio equipment.
What is the difference between 6P3S-E and 5881?
The 5881 is an earlier industrial version of the 6L6 family, while the 6P3S-E is a Soviet high-reliability design. They are electrically compatible but may differ slightly in plate voltage limits and tonal characteristics.
Is 6P3S-E interchangeable with 6L6GT?
The 6L6GT is an older version of the 6L6 tube with lower maximum ratings, whereas the 6P3S-E often exceeds those limits, making it a safe substitute in circuits designed for the 6L6GT.
What Are the Pinouts of the 6P3S-E Tube?
The 6P3S-E, a robust power tetrode, is widely recognized for its reliability and strong performance in audio amplification and other electronic applications. A thorough understanding of its pinout is essential for correct circuit design and to ensure optimal and stable operation. This tube typically uses an Octal (UX8) socket.
- Pin 1 (G1): Control Grid
- Pin 2 (K): Cathode
- Pin 3 (G2): Screen Grid
- Pin 4 (P): Plate (Anode)
- Pin 5 (H): Heater
- Pin 6 (H): Heater
- Pin 7 (NC): No Connection
- Pin 8 (K): Cathode
What Is the Datasheet for the 6P3S-E Tube?
| Parameter | Value |
| Type | Beam power tetrode (octal base) |
| Heater Voltage (Uf) | 6.3V |
| Heater Current (If) | 0.9A |
| Plate Voltage (Ua, max) | 500V |
| Screen Voltage (Ug2, max) | 450V |
| Plate Dissipation (Pa) | 20–23W |
| Transconductance (S) | 5.2 mA/V |
| Typical Output Power | ~20–25W in push-pull class AB1 |
| Base / Socket | Octal (UX8) |
| Equivalent Tubes | 6L6GC, 5881, 6L6GT |
| Application | Audio amplification, guitar amps, hi-fi systems, vintage electronics |
What is the Average Price of a 6P3S-E Tube?
The average market price for the 6P3S-E tube varies depending on its condition and origin. This military-grade variant is highly valued for its reliability and performance in audio amplification, making it a sought-after vacuum tube.
Based on current online listings (eBay, audiophile shops, and specialized tube dealers), here are the typical price ranges:
- NOS (New Old Stock) 6P3S-E Tube: $30 – $60 USD per tube
- Used 6P3S-E Tube: $20 – $45 USD per tube (depending on remaining life and matched sets)
Which Factories Produced the 6P3S-E Tube?
The 6P3S-E, a ruggedized version of the 6L6GC, was produced at several leading Soviet-era factories known for high-reliability components:
- Reflector — Saratov, USSR
- Svetlana — St. Petersburg, USSR
- Ulyanovsk Mechanical Plant — Ulyanovsk, USSR
What Are the Best 6P3S-E Tubes?
Reflector from Saratov, Russia, is considered the most popular and reputable manufacturer of the 6P3S-E tube.
