Two Tung-sol 5751WA Tubes

• Long Grey Plate Version from the 1950’s
• Fat D or Horseshoe getter
• Matched Pair
• Etched type and date codes look good to fair (see photos)
• The Tung-sol 5751WA are premium industrial grade 12AX7 tubes from the 1950s, they are identical to the rare RCA made long grey plate 7025 type tube!
• Photos represent same or similar tubes that you will receive

 

Test Results:

Gm >780 is good and 1200 is average new

• Tube 1: 1500/1700 Gm and 1.6/1.9mA
• Tube 2: 1500/1625 Gm and 1.5/1.7mA
• Tested for noise, gas, leaks, and shorts.
• This is a preowned testing NEW pair
• This pair is matched for both Gm and mA

 

What are people saying?

• “The most liquid of all the tubes, It lets the highs just roll off. Very low-noise. I am in love with the liquidness of this tube. Not as dynamic as the Raytheon, but superior with female vocals and horns.”
• “They have a “Rich and smooth tone with quiet background””
• They are for tube amps

 

PREAMP TUBE GAIN Comparison Numbers

("amplification factor")

• 12AX7A/7025/Ecc83 (100)
• 5751WI (71)
• 5751 (70)
• CV4024/12AT7WA/6201 (61)
• 12AT7/ECC81/6679 (60)

Goes great with:

• Crate V30H
• Conrad Johnson PV12A + Premier 11A, Premier 8
• Conrad Johnson MV75A1 1983
• Jolida 1301 hybrid amplifier
• PEAVEY CLASSIC 30

More information:

The tube equivalent to the 5751 tube type is the 7025 tube. While the 5751 and the 12AX7 are not identical, they are often interchangeable in many applications. The 5751 is a lower gain version of the 12AX7, offering about 70% of the gain of a 12AX7. This makes the 5751 ideal for use in guitar amplifiers and other audio equipment where a lower gain is desirable, as it can provide a cleaner sound with less distortion. It's important to note that while these tubes are often interchangeable, the specific requirements and characteristics of the equipment should be considered when making a substitution.

 

Inventory # Temp 5-B 335277812696