Hi,
first of all I really love the passive sound of my AB1, but sometimes I want more sound variations (some people say that I always want more than I have....). So I decided to put in a new electronic, but I wanted also the possibility to go back to the passive mode with bluEQube. My Human Base fretless bass has the fantastic Glockenklang electronic, so I bought the same electronic for my AB1 (only the best for my Dingwall!). The installation went very well (thank you Jeff for your help!), I left the original rotary switch in instead of the balance pot. With a push/pull volume pot I have the passive sound (with or without bluEQube) and the 3-band active sound (with or without bluEQube). The result is absolutely convincing, I can change my sound, but I never loose the characteristic of my AB1-sound, this is the best active preamp I