... и добавил:
читаю вот, и складывается впечтление что в Engl E580 Midi tube preamp нету спикосима. Вообще по хорошему надо брать Палмер и в него преамп втыкать
есть там спикосим
"The preamp comes with two
versions of these outs, stereo ¼” jacks for connecting recording gear,
and balanced XLR outs for feeding the preamp signal to mixing consoles."
"STEREO FREQUENCY CORRECTED LINE OUTPUT
This stereo ¼" jack serves as the output of the frequency-corrected line filter. It
delivers an unbalanced signal and it is equipped with a ground terminal. You can
patch the preamp signal routed through this jack to a recorder or a PC's audio
card via some type of adapter (depending on the type of inputs on the audio
card). Dial in the desired signal level via the Level knob"