Cablage Préamp externe ?

Most of the high-end digital consoles use 'floating-point arithmetic' -- 24 bits convey the audio signal, and eight bits act as a multiplier or scaling factor (the floating point version of 134,000 would be 134x103). This approach allows very big or small numbers to be handled easily whilst maintaining true 24-bit accuracy and provides an internal dynamic range of a completely ludicrous 1500dB! The big advantage is that if 'normal' signal levels are positioned somewhere in the centre of that wide dynamic range, it is impossible to overload the internal mix busses and, no matter how many channels are combined, the mix-buss noise will never become audible.
However, Yamaha's approach is to use 'fixed-point arithmetic' with a 32-bit internal structure giving a dynamic range of around 192dB -- still a very wide range compared to an analogue desk which might reach 120dB on a good day! The problem is that to obtain the best quality from the A-D converters the input signal has to peak close to the maximum level and if a lot of boost is applied in the equaliser, or if the fader is raised to increase the signal level, there is a risk of internal overload. This can be mitigated by artificially reducing the level of the input signal to create 'digital headroom' of, say, four bits (ie. 24dB of headroom -- not dissimilar to a professional analogue desk). But even this approach is not without problems because the noise floor is only 24dB below the bottom of a 24-bit input signal, and so there is the risk of losing resolution or picking up the digital noise floor if the input signal is faded down in the mix.

Consequently, the digital attenuator placed immediately in advance of the equaliser section is provided to allow the user to reduce the signal level going in to the equaliser (and dynamics module) sufficiently to ensure that when the desired amount of amount of boost is introduced, the system will not be overloaded. This technique allows the analogue input signal to be peaked to optimise the A-D conversion, the digital noise performance of the system is maintained, and sufficient operating headroom is obtained on a channel-by-channel basis by adjusting the digital attenuators as necessary.

D après ce que je sais les entrées Line et Mic de la 01V sont parallèle et non sérielle donc tu ne passe pas par le preampli de la 01V

Le mieux c est quand même Mic--> preamp --> converto adat -->RME

mais bon comme tu veux pas changer de config... Euh tu as quoi comme preamp?