The Groove Tubes GT-12AU7 preamp tube is based on a design from the Ei factory in the former Yugoslavia. The GT-12AU7 is an excellent quality large-plate... read more
The Groove Tubes GT-12AT7 preamp tube is manufactured to the highest quality JAN spec. NOS, made in USA for extremely long life. Used widely in most U.S.-made... read more
The Groove Tubes GT-12AX7-C preamp tube brings back the ever-popular and sorely missed Chinese 12AX7! This Gold Series tube has a warm, fat, old-style... read more
The Groove Tubes Gold Series GT-ECC83-S is a classic Euro type preamp tube with medium to high gain and a linear frequency response. Very clear, even vacuum... read more
The Groove Tubes Gold Series GT-5Y3 GZ30 is a rectifier tube common to lower-powered Fender amplifiers such as the Champ, Princeton and Deluxe amps. This... read more
The Groove Tubes GT5U4 GZ32 rectifier tube is commonly found in many medium powered amplifiers such as the Fender Blackface amps. The Gold Series GT-5U4... read more
The most common rectifier tube used in higher powered amps which use a rectifier such as Fender 40 watt and Vox AC-30 amplifiers. Common to higher powered... read more
The Groove Tubes Gold Series GT-6CA4 Rectifier Tube is a common 9-pin rectifier for smaller amps like the Silverstone guitar/amp case combos of the 50... read more
