Electro-Harmonix

New Plate Current Matched Quad of Electro-Harmonix 6550 Ceramic Vacuum Tubes The 6550EH is one of the finest new production tubes for any amp using 6550 or KT88. The 6550EH offers the maximum power...

New Gain Matched Sextet of Electro-Harmonix 12DW7 / ECC832 Vacuum Tubes Superior dual triode preamp tube. One triode is a high-mu 12AX7 equivalent, and the other a medium-mu 12AU7, combined in this...

New Gain Matched Quintet of Electro-Harmonix 12DW7 / ECC832 Vacuum Tubes Superior dual triode preamp tube. One triode is a high-mu 12AX7 equivalent, and the other a medium-mu 12AU7, combined in this...

New Gain Matched Quad of Electro-Harmonix 12DW7 / ECC832 Vacuum Tubes Superior dual triode preamp tube. One triode is a high-mu 12AX7 equivalent, and the other a medium-mu 12AU7, combined in this...

New Gain Matched Trio of Electro-Harmonix 12DW7 / ECC832 Vacuum Tubes Superior dual triode preamp tube. One triode is a high-mu 12AX7 equivalent, and the other a medium-mu 12AU7, combined in this...

New Gain Matched Pair of Electro-Harmonix 12DW7 / ECC832 Vacuum Tubes Superior dual triode preamp tube. One triode is a high-mu 12AX7 equivalent, and the other a medium-mu 12AU7, combined in this...

New Gain Tested Electro-Harmonix 12DW7 / ECC832 Vacuum Tube Superior dual triode preamp tube. One triode is a high-mu 12AX7 equivalent, and the other a medium-mu 12AU7, combined in this dual triode...

New Gain Matched Octet of Electro-Harmonix 7025 (12AX7) Vacuum Tubes Electro-Harmonix has released a low noise, low microphonic version of the 12AX7 that meets all specifications required for the...

New Gain Matched Quad of Electro-Harmonix 7025 (12AX7) Vacuum Tubes Electro-Harmonix has released a low noise, low microphonic version of the 12AX7 that meets all specifications required for the tube...

New Gain Matched Trio of Electro-Harmonix 7025 (12AX7) Vacuum Tubes Electro-Harmonix has released a low noise, low microphonic version of the 12AX7 that meets all specifications required for the tube...

New Gain Matched Pair of Electro-Harmonix 7025 (12AX7) Vacuum Tubes Electro-Harmonix has released a low noise, low microphonic version of the 12AX7 that meets all specifications required for the tube...

New Electro-Harmonix 7025 (12AX7) Vacuum Tube Electro-Harmonix has released a low noise, low microphonic version of the 12AX7 that meets all specifications required for the tube to be designated 7025...

New Electro-Harmonix 6CA4 / EZ81 Vacuum Tube The most reliable and best sounding small rectifier on the market. The 6CA4, 6CA4A and EZ81 are all the same tubes / compatible. An excellent choice for...

New Gain Matched Quad of Electro-Harmonix 6SN7 Gold Pins Vacuum Tubes There is finally a new, high quality, and low noise option for 6SN7s. Akin to the RCA red base 5692, the Electro-Harmonix 6SN7...

New Gain Matched Pair of Electro-Harmonix 6SN7 Gold Pins Vacuum Tubes There is finally a new, high quality, and low noise option for 6SN7s. Akin to the RCA red base 5692, the Electro-Harmonix 6SN7...

New Gain Tested Electro-Harmonix 6SN7 Gold Pins Vacuum Tube There is finally a new, high quality, and low noise option for 6SN7s. Akin to the RCA red base 5692, the Electro-Harmonix 6SN7 features a...

New Matched Quad of Electro-Harmonix 300B Gold Grid & Pins Vacuum Tubes This new production EH 300B Gold Grid offers the same specs of vintage Western Electric 300Bs like wide-shoulder ST shape,...

New Matched Pair of Electro-Harmonix 300B Gold Grid & Pins Vacuum Tubes This new production EH 300B Gold Grid offers the same specs of vintage Western Electric 300Bs like wide-shoulder ST shape,...

New Electro-Harmonix 300B Gold Grid & Pins Vacuum Tube This new production EH 300B Gold Grid offers the same specs of vintage Western Electric 300Bs like wide-shoulder ST shape, 40 watt plate...

New Matched Quad of Electro-Harmonix 2A3 Gold Grid Vacuum Tubes Modeled after the original 2A3 type (such as the RCA 2A3 from the 1930s), the Electro-Harmonix 2A3 Gold Grid tubes feature a...

New Matched Pair of Electro-Harmonix 2A3 Gold Grid Vacuum Tubes Modeled after the original 2A3 type (such as the RCA 2A3 from the 1930s), the Electro-Harmonix 2A3 Gold Grid tubes feature a...

New Electro-Harmonix 2A3 Gold Grid Vacuum Tube Modeled after the original 2A3 type (such as the RCA 2A3 from the 1930s), the Electro-Harmonix 2A3 Gold Grid tubes feature a gold-plated grid, gold...

New Gain Matched Quad of Electro-Harmonix 12BH7 Gold Pins Vacuum Tubes The newly produced Electro-Harmonix 12BH7 boasts twin triodes with 3.5 watts of dissipation per plate. An excellent...

New Gain Matched Trio of Electro-Harmonix 12BH7 Gold Pins Vacuum Tubes The newly produced Electro-Harmonix 12BH7 boasts twin triodes with 3.5 watts of dissipation per plate. An excellent...

New Gain Matched Pair of Electro-Harmonix 12BH7 Gold Pins Vacuum Tubes The newly produced Electro-Harmonix 12BH7 boasts twin triodes with 3.5 watts of dissipation per plate. An excellent...

New Gain Tested Electro-Harmonix 12BH7 Gold Pins Vacuum Tube The newly produced Electro-Harmonix 12BH7 boasts twin triodes with 3.5 watts of dissipation per plate. An excellent replacement for any...

New Gain Matched Pair of Electro-Harmonix 12AT7 / ECC81 Gold Pins Vacuum Tubes The large plate format 12AT7 has a slightly lower voltage gain than its 12AX7 counterpart, with a higher plate...

New Gain Tested Electro-Harmonix 12AT7 / ECC81 Gold Pins Vacuum Tube The large plate format 12AT7 has a slightly lower voltage gain than its 12AX7 counterpart, with a higher plate current, making...

New Gain Matched Quad of Electro-Harmonix 6SN7 Vacuum Tubes There is finally a new, high quality, and low noise option for 6SN7s. Akin to the RCA red base 5692, the Electro-Harmonix 6SN7 features a...

New Gain Matched Trio of Electro-Harmonix 6SN7 Vacuum Tubes There is finally a new, high quality, and low noise option for 6SN7s. Akin to the RCA red base 5692, the Electro-Harmonix 6SN7 features a...

New Gain Matched Pair of Electro-Harmonix 6SN7 Vacuum Tubes There is finally a new, high quality, and low noise option for 6SN7s. Akin to the RCA red base 5692, the Electro-Harmonix 6SN7 features a...

New Gain Tested Electro-Harmonix 6SN7 Vacuum Tube There is finally a new, high quality, and low noise option for 6SN7s. Akin to the RCA red base 5692, the Electro-Harmonix 6SN7 features a...

New Gain Matched Quad of Electro-Harmonix 12BH7 Vacuum Tubes The newly produced Electro-Harmonix 12BH7 boasts twin triodes with 3.5 watts of dissipation per plate. An excellent replacement for any...

New Gain Matched Trio of Electro-Harmonix 12BH7 Vacuum Tubes The newly produced Electro-Harmonix 12BH7 boasts twin triodes with 3.5 watts of dissipation per plate. An excellent replacement for any...

New Gain Matched Pair of Electro-Harmonix 12BH7 Vacuum Tubes The newly produced Electro-Harmonix 12BH7 boasts twin triodes with 3.5 watts of dissipation per plate. An excellent replacement for any...

New Gain Tested Electro-Harmonix 12BH7 Vacuum Tube The newly produced Electro-Harmonix 12BH7 boasts twin triodes with 3.5 watts of dissipation per plate. An excellent replacement for any NOS or...

New Gain Matched Quad of Electro-Harmonix 12AT7 / ECC81 Vacuum Tubes The large plate format 12AT7 has a slightly lower voltage gain than its 12AX7 counterpart coupled with a higher plate current -...

New Gain Matched Trio of Electro-Harmonix 12AT7 / ECC81 Vacuum Tubes The large plate format 12AT7 has a slightly lower voltage gain than its 12AX7 counterpart coupled with a higher plate current -...

New Gain Matched Pair of Electro-Harmonix 12AT7 / ECC81 Vacuum Tubes The large plate format 12AT7 has a slightly lower voltage gain than its 12AX7 counterpart coupled with a higher plate current -...

New Gain Tested Electro-Harmonix 12AT7 / ECC81 Vacuum Tube The large plate format 12AT7 has a slightly lower voltage gain than its 12AX7 counterpart coupled with a higher plate current - making it...