tubes_list @ Groove Tubes

Matched Power Output Tubes

Please note, that in the USA, all power tubes are shipped three day air as minimum shipping. Ground shipping has a high degree of shipping damage. Please do not select UPS ground.


	6V6 Family
	GT-6V6-C Duet		Classically designed with warm overdrive and soft distortion character.

	GT-6V6-C Quartet		Classically designed with warm overdrive and soft distortion character.

	GT-6V6-C Single		Classically designed with warm overdrive and soft distortion character.

	GT-6V6-R Duet		The choice of most all smaller powered Fender amps and other similar low powered amps (about 15 watts per tube). Warm, round, easily overdriven. Great for recording or practice.

	GT-6V6-R Quartet		The choice of most all smaller powered Fender amps and other similar low powered amps (about 15 watts per tube). Warm, round, easily overdriven. Great for recording or practice.

	GT-6V6-R Single		The choice of most all smaller powered Fender amps and other similar low powered amps (about 15 watts per tube). Warm, round, easily overdriven. Great for recording or practice.

	GT-6V6-S Duet		Highest output 6V6. This tube has more of the character of a 6L6 than 6V6 in many amps. These handle plate voltages in excess of 475 plate volts and have a very agressive tone and long life.

	GT-6V6-S Quartet		Highest output 6V6. This tube has more of the character of a 6L6 than 6V6 in many amps. These handle plate voltages in excess of 475 plate volts and have a very agressive tone and long life.

	GT-6V6-S Single Tube		Highest output 6V6. This tube has more of the character of a 6L6 than 6V6 in many amps. These handle plate voltages in excess of 475 plate volts and have a very agressive tone and long life.

	ST-6V6-C Silver Series single tube		6V6-C Silver Series (tube prices are for single tube quanties) - For detailed description of this tube, please see the GT description of the GT labelled product.

	ST-6V6-R Silver Series single tube		6V6-R Silver Series (tube prices are for single tube quanties) - For detailed description of this tube, please see the GT description of the GT labelled product.

	6L6 Family
	GT-5881C Duet		High vacuum short bottle. 30 watt tube.

	GT-5881C Quartet		High vacuum short bottle. 30 watt tube.

	GT-6L6-CHP Duet		High Performance black plate 6L6 with GT heat sink plate assembly. 30 watt tube.

	GT-6L6-CHP Quartet		High Performance black plate 6L6 with GT heat sink plate assembly. 30 watt tube.

	GT-6L6GE Duet		A faithful reproduction of the original General Electric "clear top" tube made on the original GE machines and with many original materials.

	GT-6L6GE Quartet		A faithful reproduction of the original General Electric "clear top" tube made on the original GE machines and with many original materials.

	GT-6L6GE Single		A faithful reproduction of the original General Electric "clear top" tube made on the original GE machines and with many original materials.

	GT-6L6-R (B) Duet		Russian made, same as the 5881 you are using now, but when these are matched in our system they are improved. These are a very sturdy and reliable tube.

	GT-6L6-R (B) Quartet		Russian made, same as the 5881 you are using now, but when these are matched in our system they are improved. These are a very sturdy and reliable tube.

	GT-6L6-R (B) Single		Russian made, same as the 5881 you are using now, but when these are matched in our system they are improved. These are a very sturdy and reliable tube.

	GT-6L6-S Duet		Slovakian made with high power and very agressive dynamic tone...punchier sounding but still a sweet tone.

	GT-6L6-S Quartet		Slovakian made with high power and very agressive dynamic tone...punchier sounding but still a sweet tone.

	GT-6L6-S Single		Slovakian made with high power and very agressive dynamic tone...punchier sounding but still a sweet tone.

	GT-KT66-C Duet		Chinese made copy of the classic KT66.

	GT-KT66-C Quartet		Chinese made copy of the classic KT66

	GT-KT66-C Single		Chinese made copy of the classic KT66, great sounding.

	ST-6L6-C Silver Series single tube		6L6-C Silver Series (tube prices are for single tube quanties) - For detailed description of this tube, please see the GT description of the GT labelled product.

	ST-6L6-R (B) Silver Series single tube		6L6-R(B)Silver Series (tube prices are for single tube quanties) - For detailed description of this tube, please see the GT description of the GT labelled product.

	ST-6L6-S Silver Series single tube		6L6-S Silver Series (tube prices are for single tube quanties) - For detailed description of this tube, please see the GT description of the GT labelled product.

	ST-KT66-C Silver Series single tube		KT66-C Silver Series (tube prices are for single tube quanties) - For detailed description of this tube, please see the GT description of the GT labelled product.

	EL34 Family
	GT-E34LS Duet		New exclusive GT design with special "heat wings" attached to plate for more power, longer life, and better tone. Big bottom, very dynamic, most powerful in it's class.

	GT-E34LS Quartet		New exclusive GT design with special "heat wings" attached to plate for more power, longer life, and better tone. Big bottom, very dynamic, most powerful in it's class.

	GT-E34LS Single		New exclusive GT design with special "heat wings" attached to plate for more power, longer life, and better tone. Big bottom, very dynamic, most powerful in it's class.

	GT-EL34M Duet XF2 Dual Getter		Reproduction of a classic EL-34 XF2 Dual Getter tube. This is a classic.

	GT-EL34M Quartet XF2 Dual Getter		Reproduction of the classic EL-34 XF2 Dual Getter tube. This is a classic.

	GT-EL34R Quartet		This Russian made pentode is standard issue on many UK amps and has great durability, although as with most Russian power tubes the break up is a bit harsh and they lack high end as compared to the true European models.

	GT-EL34R Duet		This Russian made pentode is standard issue on many UK amps and has great durability, although as with most Russian power tubes the break up is a bit harsh and they lack high end as compared to the true European models.

	GT-EL34R Single		This Russian made pentode is standard issue on many UK amps and has great durability, although as with most Russian power tubes the break up is a bit harsh and they lack high end as compared to the true European models.

	GT-KT77S Duet		KT-77S Beam Pentode. This is a direct replacement for an EL34 or E34LS tube. This is a matched duet of two tubes.

	GT-KT77S Quartet		KT-77S Beam Pentode. This is a direct replacement for an EL34 or E34LS tube. This is a matched quartet of four tubes.

	ST-E34L-S Silver Series single tube		E34L-S Silver Series (tube prices are for single tube quanties) - For detailed description of this tube, please see the GT description of the GT labelled product.

	ST-EL34-R Silver Series single tube		EL34-R Silver Series (tube prices are for single tube quanties) - For detailed description of this tube, please see the GT description of the GT labelled product.

	6550/KT88 Family
	GT-6550-C Duet		A softer version of the older USA 6550A, with a nice distortion character. This tube has a distortion that is between a 6L6GC and a 6550A.

	GT-6550-C Quartet		A softer version of the older USA 6550A, with a nice distortion character. This tube has a distortion that is between a 6L6GC and a 6550A

	GT-6550-C Single		A softer version of the older USA 6550A, with a nice distortion character. This tube has a distortion that is between a 6L6GC and a 6550A.

	GT-6550-R Duet		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.

	GT-6550-R Quartet		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.

	GT-6550-R Single		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.

	GT-KT88-C2 Duet		An exact replica of the famous UK made Genelux KT88, it has huge power (700vdc on the plates, more than 50 watts per tube!) Made for us by the largest tube factory in China, a welcome option for higher powered amps like VHT and HIWATTS.

	GT-KT88-C2 Quartet		An exact replica of the famous UK made Genelux KT88, it has huge power (700vdc on the plates, more than 50 watts per tube!) Made for us by the largest tube factory in China, a welcome option for higher powered amps like VHT and HIWATTS.

	GT-KT88-C2 Single		An exact replica of the famous UK made Genelux KT88, it has huge power (700vdc on the plates, more than 50 watts per tube!) Made for us by the largest tube factory in China, a welcome option for higher powered amps like VHT and HIWATTS.

	GT-KT88-SV Duet		The KT88sv Is the newest version, identical to original Gold Lion specs from the 60's.

	GT-KT88-SV Quartet		The KT88sv Is the newest version, identical to original Gold Lion specs from the 60's.

	GT-KT88-SV Single		The KT88sv Is the newest version, identical to original Gold Lion specs from the 60's.

	ST-6550-C Silver Series single tube		6550-C Silver Series (tube prices are for single tube quanties) - For detailed description of this tube, please see the GT description of the GT labelled product.

	ST-6550-R Silver Series single tube		6550-R Silver Series (tube prices are for single tube quanties) - For detailed description of this tube, please see the GT description of the GT labelled product.

	ST-KT88-C2 Silver Series single tube		KT88-C2 Silver Series (tube prices are for single tube quanties) - For detailed descri

	ST-KT88-SV Silver Series single tube		KT88-SV Silver Series (tube prices are for single tube quanties) - For detailed description of this tube, please see the GT description of the GT labelled product.

	EL84 Family
	GT-EL84-R Duet		Russia EL84, Good quality, long lasting type with a slightly aggressive edge when pushed into overdrive.

	GT-EL84-R Quartet		Russia EL84, Good quality, long lasting type with a slightly aggressive edge when pushed into overdrive.

	GT-EL84-R Single		Russia EL84, Good quality, long lasting type with a slightly aggressive edge when pushed into overdrive.

	GT-EL84-S Duet		New European version with even more response, higher power and warmer tone.

	GT-EL84-S Quartet		New European version with even more response, higher power and warmer tone.

	GT-EL84-S Single		New European version with even more response, higher power and warmer tone.

	ST-EL84-R Silver Series single tube		EL84-R Silver Series (tube prices are for single tube quanties) - For detailed description of this tube, please see the GT description of the GT labelled product.

	ST-EL84-S Silver Series single tube		EL84-S Silver Series (tube prices are for single tube quanties) - For detailed description of this tube, please see the GT description of the GT labelled product.

	Other
	GT-7027-S Duet		Rare power pentode used in the early Ampeg amps, currently the only one available for these amplifiers.

	GT-7027-S Quartet		Rare power pentode used in the early Ampeg amps, currently the only one available for these amplifiers.

	GT-7027-S Single		Rare power pentode used in the early Ampeg amps, currently the only one available for these amplifiers.

	GT-7591A-R Duet		This obscure pentode tube used in some early Gibson amps has been off the market until our favorite Russian factory decided to supply it again.

	GT-7591A-R Quartet		This obscure pentode tube used in some early Gibson amps has been off the market until our favorite Russian factory decided to supply it again.

	GT-7591A-R Single		This obscure pentode tube used in some early Gibson amps has been off the market until our favorite Russian factory decided to supply it again.

	ST-7027-S Silver Series single tube		7027-S Silver Series (tube prices are for single tube quanties) - For detailed description of this tube, please see the GT description of the GT labelled product.

	ST-7591-R Silver Series single tube		7591-R Silver Series (tube prices are for single tube quanties) - For detailed description of this tube, please see the GT description of the GT labelled product.