Every 12AX7- or ECC83-compatible tube will work. Serial tube types are Sovtek 12 AX 7 LPS or JJ electronics ECC83. The only alternative to our serial tubes we can recommend from own tests is the 803S from JJ electronics. This is a higher-end alternative esp. for preamps. We cannot comment other tubes, for example on possible results, because tubes and circuits must match in many aspects, so sound results are not always foreseeable.
Serial tubes are available through SPL or SPL distributors, all others must be ordered through tube dealers.
The left and the middle tube are for the left and right site, here it is better to use a matched pair.
The right tube is used for the output stage ... here you can use a single one.
"
Si ça peut servir à qqn, voici la réponse reçue de SPL avec au passage l'explication de l'utilité des 3 tubes :
"you can use any type of ECC83 tube.
Every 12AX7- or ECC83-compatible tube will work. Serial tube types are Sovtek 12 AX 7 LPS or JJ electronics ECC83. The only alternative to our serial tubes we can recommend from own tests is the 803S from JJ electronics. This is a higher-end alternative esp. for preamps. We cannot comment other tubes, for example on possible results, because tubes and circuits must match in many aspects, so sound results are not always foreseeable.
Serial tubes are available through SPL or SPL distributors, all others must be ordered through tube dealers.
The left and the middle tube are for the left and right site, here it is better to use a matched pair.
The right tube is used for the output stage ... here you can use a single one.
"
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C’était quoi le problème du coup?