gehil,
Welcome to diyAudio!
Unless I missed something, there is no hidden tube(s) in the Musical Fidelity 308.
So, you might want to check out the Solid State Threads, or start your own thread there.
Then, there are the various loudspeaker threads you might like reading; Full Range; and Multi-Way threads, for example
When you get ready to return to using Vacuum Tubes, we are found here on Tubes / Valves threads.
Play an Electric Guitar? . . . check out Instruments and Amps threads.
Have Fun!
Welcome to diyAudio!
Unless I missed something, there is no hidden tube(s) in the Musical Fidelity 308.
So, you might want to check out the Solid State Threads, or start your own thread there.
Then, there are the various loudspeaker threads you might like reading; Full Range; and Multi-Way threads, for example
When you get ready to return to using Vacuum Tubes, we are found here on Tubes / Valves threads.
Play an Electric Guitar? . . . check out Instruments and Amps threads.
Have Fun!