One thought on “MELZ 6N8S/6SN7 black plates metal base”
The MELZ 6N8S Metal Base is a world-class contender in the 6SN7 family, offering a sonic profile that is remarkably similar to the MELZ 6N8S with holes in the plates. The primary distinction between the two lies in the decay; the version with perforated plates provides a slightly more sustained decay, which translates to a perceived increase in “air” and spatial openness. While there is much debate in audiophile circles claiming that the “holes in plate” design is far superior, my testing suggests that both iterations are superb and closely matched.
A defining strength of these MELZ tubes is their exceptional high-frequency performance. The treble is extended well beyond the reach of the vast majority of 6SN7 tubes, providing a level of detail and transparency that is truly rare. If you are looking for a neutral yet highly extended top end, these tubes are HIGHLY RECOMMENDED.
The History of the MELZ Factory
The MELZ factory (Moskovskiy Elektrolampovyi Zavod), located in Moscow, was one of the most prestigious vacuum tube manufacturers in the former Soviet Union. Founded in the early 20th century, it served as a primary hub for high-end research and military electronic production. During the 1950s, MELZ produced some of the finest 6N8S (6SN7 equivalent) valves ever made, intended for use in laboratory equipment and critical military hardware. These specific metal-base variants are famous for their blackened nickel plates and high-purity materials, which were designed to meet the most stringent Soviet industrial standards.
Final Verdict
The MELZ 6N8S Metal Base is a top-tier reference tube. While the “holes in plates” version offers slightly more atmospheric decay, the solid plate version is equally impressive, delivering elite transparency and unrivaled high-frequency extension. It remains a “Holy Grail” upgrade for any high-fidelity 6SN7-based system.
The MELZ 6N8S Metal Base is a world-class contender in the 6SN7 family, offering a sonic profile that is remarkably similar to the MELZ 6N8S with holes in the plates. The primary distinction between the two lies in the decay; the version with perforated plates provides a slightly more sustained decay, which translates to a perceived increase in “air” and spatial openness. While there is much debate in audiophile circles claiming that the “holes in plate” design is far superior, my testing suggests that both iterations are superb and closely matched.
A defining strength of these MELZ tubes is their exceptional high-frequency performance. The treble is extended well beyond the reach of the vast majority of 6SN7 tubes, providing a level of detail and transparency that is truly rare. If you are looking for a neutral yet highly extended top end, these tubes are HIGHLY RECOMMENDED.
The History of the MELZ Factory
The MELZ factory (Moskovskiy Elektrolampovyi Zavod), located in Moscow, was one of the most prestigious vacuum tube manufacturers in the former Soviet Union. Founded in the early 20th century, it served as a primary hub for high-end research and military electronic production. During the 1950s, MELZ produced some of the finest 6N8S (6SN7 equivalent) valves ever made, intended for use in laboratory equipment and critical military hardware. These specific metal-base variants are famous for their blackened nickel plates and high-purity materials, which were designed to meet the most stringent Soviet industrial standards.
Final Verdict
The MELZ 6N8S Metal Base is a top-tier reference tube. While the “holes in plates” version offers slightly more atmospheric decay, the solid plate version is equally impressive, delivering elite transparency and unrivaled high-frequency extension. It remains a “Holy Grail” upgrade for any high-fidelity 6SN7-based system.