Buzz Audio Elixir - Mikrofonvorverstaerker

Chandler Germanium M500 MK II Mikrofonvorverstaerker

Chandler Little Devil preamp 500

Chandler TG2 500 Preamp

Crane Song Syren

Daking Mic Pre 500

DAV Electronics BG No. 501

Earthworks 521 Pre Amp

Electrodyne 501 Preamp

Focusrite Red 1 500 Pre Amp

Fredenstein Artstic Mic Pre

Fredenstein F609 Röhren- Mikrofonvorverstärker

Fredenstein HD Micpre

Golden Age Project PRE-573 MKII

Golden Age Project PRE-573 MKII Plus

Grace Design m501 Vorverstärker

Great River MP 500NV PreAmp

Helios Typ 69 Preamp

Heritage Audio 1073/500

Heritage Audio 73 Jr. Pre Amp

IGS Audio Neox 500

IGS Audio Vanad 500

Inward Connections Magnum VU

JDK Audio by API V10

Joemeek preQ