Looking for the classic Fender, Marshall, Matchless, Hiwatt, VOX, Reverb tube tones?  The Frenzel "Hot Rod" Pure Tube Preamps will give you great vintage tones whether you are driving a solid state amp or tube amp. Upgrades for custom voices plus a 1 watt power amp for low volume practice.  Great also for recording direct in.  Available in Open Chassis,  2U Rack Mount Chassis and Retro Cage Chassis.