Vintage Power Supplies/Early Combo Organs

Some early organs had unclean power supplies, resulting in a particular rattiness in their tone, especially as the frequencies clashed with 60Hz. This was especially evident in 2005 when I edited some up for the Alesis Fusion project. When a single-cycle loop was used, which of course is the most memory-saving method, the character of the note(s) disappeared. Depending upon the note, loops of several wavecycles were required in order to preserve the original character.

A lack of rattiness and various tube characteristics might be why some of the earliest Hammond-alikes sounded too pure and clean.

Short note on vintage, musical characteristics

Drip Electronics(.com) offer extremly high-quality PCBs to build vintage recording gear. One of their latest releases, for the 47 version 2 states:

"Drip even included the option to use a GZ34 tube rectifier. The use of vacuum tube regulators and rectifier gives the unit it's beautiful 'sag' when pushed hard, ideal for cutting edge vocals and shredding guitar."

And their Fairchild true clone states:

"Since the foundation of the Fairchild design is the power supply,great care has been taken to preserve its integrity. A tube regulated 240v and a high voltage 440v supply line give the 660a deep punch to your audio signal. Sprague atoms have been added for additional performance and filtering. This PCB provides the options to build a dream machine - all resistor footprints can accommodate up to five-watt metal film resistors. The capacitor footprints can also accommodate high end audiophile components such as Mundorf or Jensen."