Alembic F-1X Tube preamp - Amps and Cabs For Sale - Basschat
Alembic F2-B inspired preamp with line level outputs | diyAudio
Dual Tube Preamp for Bass and Guitar Alembic F2b inspired Fender 60's tonestack | Reverb Italia
1970 Alembic F-2B Stereo Pre Amp Early Production Black & Blue 2-Channel Tube Bass Guitar PreAmp Amplifier Vintage Original Rack Mount Effects Unit in Box | Reverb Italia