I am using 16 EI KT90's type 2 in my JL-1's
I have been using them for over 8 years now! I have thousands of hours on them, but they remain stable and sound incredible! Of course there are no more of these tubes so I am nursing them along by using a Mc402 McIntosh for more casual listening and during the long hot Texas summer.
Ken
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Sonus Faber Amati,Sonus Faber Extremas, Sonus Faber Electa Amator MkI, Sonus Faber Concertos, Convergent Audio JL-1 amps, Cat Ultimate Preamp, Dynaco SCA 35 restored with EFB mod, , Basis Debut Vacum table, Vector Arm, Koetsu Urishi, Walker Motor Drive, REL Stentor II X2, Cardas Golden Cross wire, Resolution Audio Cantata music center, Nak Dragon, Nak 505, Teac X2000R, Otari MX5050BIII, Yamaha CT7000,Mac 4300,
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