Hey Massimo,thank you for taking your time to provide that excellent, and detailed, information on your amp experience with the SL’s! That is really valuable information. Cello is phenomenal gear. Even though your Cello amps might be considered “older technology”, those amps were built to a whole other level of quality. So to have that level of amplifier to compare to the Mola Mola really helps to put into perspective how good the mola mola must be. Thank you again for taking you time to share your experience this helps the SL community.