Are you looking for the best 7591 tubes? Look no further – you’re in the right place!
The 7591 power tube was manufactured by Washington in 1959. This power tube is commonly used today and employed in modern audio equipment.
The fabulous sound of 7591 makes it one of the most popular tubes among guitarists.
Here we have listed down some of the best 7591 tubes that are truly amazing.
Best Sounding 7591 Tubes – 7591 Tube Comparison
| Image | Model | Price |
|---|---|---|
| Tung-Sol 7591A Vacuum Tube (Top Pick) | Check Price |
 | Electro-Harmonix 7591A Vacuum Tube (Close Runner-Up) | Check Price |
1. Tung-Sol 7591A Vacuum Tube (Editor’s Choice)
Tung-Sol offers high-quality vacuum tubes for musical instrument amplifiers. The company supplies varieties of tube sets for modern or vintage amps available in the market. It is constructed with the similar specifications as the original 7591 tube, and it is a good choice for those who want to replace tubes in their amplifier. These are readily available, making them a popular choice.
The reissues make it possible to get a reliable matched set because it is difficult to get a truly matched set due to lack of availability.
2. Electro-Harmonix 7591A Vacuum Tube (Close Runner-Up)
Electro-Harmonix 7591A vacuum tube is commonly used in vintage Gibson and Ampeg guitar amplifiers. It is also used in tube hi-fi equipment manufactured by Scott, Fisher, and Harmon-Kardon. These tubes are known for punch and clarity. 7591A brings back a smooth sound with a kick and has a well-rounded design. Ampeg owners will be delighted to hear the sound of 7591 A vacuum tubes.
The tubes have a large bulb and produce more power output. Therefore, they are suitable for Mcintosh Mc-225 amplifiers where the power of more than 28 watts is produced. In some cases, more than 30watt power is produced. So you need not settle for unknown quality NOS tubes when you have Electro-Harmonix tubes that are burned in for twenty-four hours and bias matched for plate current.
The factory matches the specifications at a real-world voltage, and each tube has test results labeled on it. You will appreciate this tube when it comes to sound, performance, reliability, and durability.
Are 7591 and 6L6 Tubes the Same?
Like 6L6, 7591 is a beam tetrode, but the old Japan and US versions do not have anything in common, and they will not be a great substitute for each other. However, you can replace a 6L6 with 7591, but lesser transconductance affects operation. 7591 are twice rough as the best 6L6 tubes. The operational characteristics of the 7591 are also not the same as 6L6.
There is not much common between 7591 and 6L6 other than similar output power ratings. From a sonic point of view, these tubes are different, and 7591 is cleaner sounding while 6L6 has more brute force output. 7591 needs a high voltage supply that can be hard on different parts of an amp. So it is necessary to rebuild a bias circuitry.
Conclusion: The Best 7591 Tube Is…
When you search for the best product, then take a close look at the tubes reviewed above. The mentioned tubes work perfectly on any vintage and modern amps. Amplifiers use tubes to convert the sound into full output sound by amplification.
Our favorite from the list is the Tung-Sol 7591A vacuum tube; these are high-quality tubes available at a favorable price.