Tech21nyc | 2 decades ago

http://tech21nyc.com/products/sansamp/psa1_1.html

Tech 21's exceptionally versatile SansAmp PSA-1.1 is a gimmick-free pre-amp for guitar, bass, vocals, horns, drums, mixdowns, etc. It offers 49 factory presets of the most recognized vintage and modern tube amp sounds for guitar and bass, and 77 user-definable locations. Digitally programmable with 100% analog signal path.

Considered a staple in professional recording studios, the SansAmp PSA has been used on major releases and worldwide tours for multiple applications and instruments, including horns, vocals and drums. Players, engineers and producers alike find the SansAmp PSA very simple to operate. To program, you just tweak the knobs and save. Parameters are adjusted in real time with traditional analog potentiometers. The digital memory stores the positions of the pots. With 256 incremental steps, each rotary control increases and decreases in a smooth linear fashion.