Tung-Sol 6550 power tubes are an ideal replacement or upgrade for KT88 tubes, offering the same full-bodied tone and professional quality in a readily available tube. This production-model power tube takes more than a few notes from the Sovtek KT88 — Tung-Sol copied the Type 3 triple getter version while constructing it as the uncanny replacement for its inspiration. The result? An incredibly dynamic and open sound that accentuates any genre or playing style. Tung-Sol tubes boast a sturdy construction for long-lasting use without the worry of cracks or defects — in other words, they are fully prepared for the bumpy roads and countless shows ahead of them. Upgrade all your heads and combos with Tung-Sol 6550 Power Tubes!