KT88 Groove Tubes Matched Quad Low Fender KT66 KT90 6L6

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Verkoper: Top-Rated Seller platinum_tubes (992) 100%, Objectlocatie: Canoga Park, California, Verzending naar: Worldwide, Objectnummer: 253445809629 PLATINUM TUBESKT88 GROOVE TUBE QUARTETKT88 Groove Tubes Premium Series Performance Matched Quartet (4) Orange Branding (Not Sticker) Made in ChinaRating: 2 Low (1-3)Groove Tube Price: $139.99Groove Tube Part Number: GT-KT88-C2Q-L Bias: -64.4 VDCTonal Comment:"Big, round and clean, yet easily compressed." Low (1-3) Early distortion, wide range, softer attack good for Rock and Blues solos.No Returns; defective tubes will be replaced free of charge for 60 days.WHY PLATINUM TUBES? Once purchased and received by Platinum Tubes, vacuum tubes undergo exacting quality control measures to further assure reliable, sonically acceptable performance. Power output tubes are first mounted in test fixtures and burned in for 24 hours. This burn-in helps stabilize the internal operating parameters of the tubes before measurements begin. Each power tube is then tested and graded for technical characteristics specified by platinum tubes engineers. Only after a tube successfully passes these exacting challenges is it labeled and put into stock to be sold. Tubes not meeting these criteria are rejected to the supplier or disposed of. Average tube life will depend on several parameters: product type, how the product is installed, loudspeaker efficiency, room size and acoustic damping, listening habits or average sound pressure levels, A.C. line stability and purity, and other circumstances. Generally, preamplifier tubes last up to 5,000 hours, while power amplifier output tubes will last up to 3,000 hours. Near the end of their useful sonic life, aging vacuum tubes may degrade the sonic character of the product(s) they are used in. The sound may become somewhat dry and lifeless, with a noticeable decrease in harmonic richness or bloom. Bass response may be diminished, and musical dynamics may flatten out or compress. Toward the very end of their service life, tubes may become noisy, noticeable as a slight rushing sound or rustling noise. It is far better to replace vacuum tubes prior to the end of their service life, before severe sonic degradation or outright failure occurs. Running vacuum tubes into failure may damage to other internal components and cause needless repair expense.Factors which can shorten tube life include inadequate ventilation, overdriving loudspeakers at continuously high volume levels, severely fluctuating A.C. line conditions (e.g. sagging line voltage during summer peaks of air-conditioning demand), or severe interference pulses or electromagnetic interference.SHIPPING INFORMATIONUSA Shipping $5.50 (USPS Air Mail)International $22.00 (USPS Air Mail) Condition: NOS, Brand: Groove Tubes

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