Electro-Harmonix 6550EH output tube← Single ›

Electro-Harmonix 6550BH is a beam power tube used for the output stage of vacuum tube amplifiers adopting 6550. The 6550 is large with KT88output tubeWith its high plate loss and sufficient current supply capability, it has been widely used from large output amplifiers to Hi-Fi amplifiers that emphasize margin.
Rather than summarizing the sound lightly, create a solid foundation from low to medium range, largeoutput tubeThe characteristic of 6550 is that it is easy to get the scale and the sense of stability. In particular, amplifiers that require room for low-range driving forces and large inputs will demonstrate their capabilities.

Electro-Harmonix is a brand widely used in audio amplifiers and instrument amplifiers in Russian vacuum tubes. Instead of looking for a vintage tube, it is also an option if you are actually looking for a 6550 that can be incorporated into the amplifier and used on a daily basis.

About Sales Form

This product isSingle (1 bottle)It is sold in. Matched pairs, not matched quads. If multiple amplifiers are used simultaneously with push pull amplifiers, please check the matching conditions required by the amplifier side.

Usage Precautions

The 6550 and KT88 are close to socket shape and basic electrical properties, and there are many amplifiers corresponding to both, but not all amplifiers can be replaced unconditionally. Plate voltage, screen grid voltage, bias setting, heater current, etc. differ for each amplifier. Be sure to check the specified vacuum tube and the adjustment method of the amplifier maker before replacing.

6550 charm, smalloutput tubeThe delicacy of the is the margin and stability of the output stage. While there is a sense of weight in the low range, it is not only a simple increase in quantity, it is a direction to make the foundation of the whole music by firmly controlling the speaker. It is easy to produce thickness even in the middle range, and the scale is not small even with energetic sound sources such as large knitting, rock, jazz, etc.
The 6550 is often compared to the KT88, but it is generally preferred to place a lower center of gravity and emphasize density and stability compared to the glamor and elongation of the KT88. Although the difference between the amplifier design is large,output tubeWhen choosing a character, this difference becomes a guide.