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		Groove Tube Series GT 6550 R Matched Power Tube, Low (1 3 GT Rating) Quartet See Details  |  See Product Specs		from $168 (3 stores) See Details
		Groove Tubes Gold Series GT-6L6-R Matched Power Tubes (Low (1-3 GT Rating) Quartet) See Details  |  See Product Specs		from $84 (3 stores) See Details
		Groove Tubes Gt Quartet Matchd Pwr Tubes Lo See Details  |  See Product Specs		from $70 (2 stores) See Details
		Groove Tube Series GT 6550 R Matched Power Tube, Medium (4 7 GT Rating) Quartet See Details  |  See Product Specs		from $133 (5 stores) See Details

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