(!) (BEST PAIR) 6CA4 RCA NOS 1960”s – 1972 (54-56/40 and 54-54/40) (Wright, Counterpoint, Cary, Zanden) Title: 6CA4 RCA NOS

1 pair) 6CA4 RCA NOS

1 tube) 54/40 and 56/40 (DX) 1972

1 tube) 54/40 and 54/40 (1960”s)

recommended for:

– Wright Sound phono
– Counterpoint 5.1
– Reinhardt SVT-18 guitar amp
– STROMBERG CARLSON
– Cary SLP90 preamp
– BOGEN DB230
– Marshall EL84 amp
– Concert fidelity preamp
– Zanden 3000 preamp
– Concert Fidelity CF-080-LSX2 Refurbished