Groove tubes GT-6550-R High Quartet Tube
30 days to change your mind (Terms)
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Highest power pentode for use in Marshall, Hiwatt, Ampeg SVT, the GT amps and a few other higher powered amps. Also popular for HiFi amps.
Quartet of power tube GT-6550-R High
(High= 8-10. Many dynamic, power in clear sound, ideal for musicians in search of power, for jazz and bass amp)
Euroguitar Reference : 55648