JJ 7591S Power Vacuum Tube
Jj 7591S Tube
Jj 7591S Tube

JJ Electronics

JJ 7591S Power Vacuum Tube

$26.69
Stats for Nerds
Type
Power pentode
Base
Octal (8-pin)
Max plate voltage
550 V
Max plate dissipation
19 W
Max screen voltage
440 V
Heater
6.3 V / 0.8 A
In stock
Matched Tubes:Single
Quantity:

The JJ 7591S is a modern beam-power tube designed as a replacement for vintage 7591 tubes, commonly used in classic hi-fi and guitar amplifiers, offering up to 19 watts of plate dissipation, with a warm, full-bodied tone, smooth midrange, and strong bass response, making it ideal for restoring vintage amps like those from Fisher, Scott, and Ampeg, while maintaining the original sonic character with improved reliability and availability.

 

Matched Sets

Each tube is individually tested, measured, and precisely matched to the same milliamp to ensure consistent electrical performance across every set. This careful matching process promotes balanced operation, reliable response, and long-term stability in your amplifier. Precision milliamp matching is a standard part of our quality control and is included at no additional cost.

Matched Sets

Each tube is individually tested, measured, and precisely matched to the same milliamp to ensure consistent electrical performance across every set. This careful matching process promotes balanced operation, reliable response, and long-term stability in your amplifier. Precision milliamp matching is a standard part of our quality control and is included at no additional cost.

Carefully Tested

Every tube is subjected to a comprehensive testing process using custom-designed, calibrated equipment to evaluate key electrical and performance characteristics. Each tube is measured for proper operation, stability, and consistency before it is approved for sale. This thorough testing ensures that only tubes meeting our strict performance standards are shipped, providing dependable operation and long service life.

Carefully Tested

Every tube is subjected to a comprehensive testing process using custom-designed, calibrated equipment to evaluate key electrical and performance characteristics. Each tube is measured for proper operation, stability, and consistency before it is approved for sale. This thorough testing ensures that only tubes meeting our strict performance standards are shipped, providing dependable operation and long service life.

Burned in

Every tube is subjected to a controlled burn-in process at no additional cost prior to shipment. During burn-in, tubes are operated under load for an extended period to identify early failures and ensure stable, reliable performance. This process helps eliminate weak or unstable tubes before they ever reach your amplifier.

Burned in

Every tube is subjected to a controlled burn-in process at no additional cost prior to shipment. During burn-in, tubes are operated under load for an extended period to identify early failures and ensure stable, reliable performance. This process helps eliminate weak or unstable tubes before they ever reach your amplifier.