This is a AER Compact Mobile 2 is one of the most highly regarded professional battery-powered acoustic amplifiers ever made. It has become something of a cult classic among buskers, singer-songwriters and acoustic performers because of its exceptional sound quality and rugged construction. It is no longer in production. 

The amplifier includes:

• 60-watt professional acoustic amplifier.
• Built-in rechargeable battery (typically 3–4 hours at normal performance volume).
• Two independent channels:
• • Channel 1 for acoustic guitar/instrument.
  • Channel 2 for microphone or instrument with switchable 48V phantom power.
• High-quality digital effects including reverb, delay and chorus.
• XLR DI output for connecting directly to a PA.
• Headphone output.
• Auxiliary input.
• Effects loop.
• Twin-cone 8-inch speaker renowned for its natural acoustic sound.
• Original padded AER carry bag.
• Two power supplies/chargers appear to be included.
• In excellent working order
• Some minor scuffs on a few cabinet corners.
• Control panel is exceptionally clean.
• Grille cloth looks excellent.
• Original carry appears in very good condition. Some scuffs from use.