Area 51 is a warehouse discovery at Exit 51 – a meticulously preserved lifetime collection we’re honored to place into collectors’ hands. This is a vintage tube amplifier by Heathkit, identified by the original rear label as Model AA-191. The AA-191 is a low-power (3 watt) mono tube amplifier, commonly used in small hi-fi systems, educational labs, or as a preamp/driver in custom audio builds. The front panel features. Bass control (flat to boost). Treble control (cut to flat). Phono / Tuner input selector. The rear panel includes. Speaker output terminals (4? / 8? / 16?). Tuner and crystal (XTAL) inputs. Headphone (phones) jack. Original Heathkit model and serial label. This unit comes from a large private estate of a meticulous original owner, where electronics were stored indoors as part of a carefully preserved lifetime collection. Untested (no power applied). Metal chassis shows surface wear, scratches, and age-related marks. All control knobs present with wear. Power cord present with age discoloration. Rear label present and legible. Internal components visible through ventilation slots. No testing, cleaning, or servicing performed. Unit stabilized to prevent internal movement. Please review all photos carefully.

For sale is an old Heath kit AA – 191 audio amplifier complete with tubes. This is a nice little amp to use in your mono system or convert for guitar. The bottom cover is just light surface oxidation and not rot. Picture makes it look worse than it actually is.

Amplifier looks to be in great physical condition. When turned on the tubes do appear to come on. That as far as it has been tested. The back plastic feet are broken off as shown.