This is one of a few recorders that you can use a AC adapter. Back up recorders for Court Reporters.

YES, its the cheapest digital recorder with a Ac Adapter power supply. 

This recorder can be operated on batteries or it comes with a wall Ac adapter for those long days in court or depositions. The unit has a large record button that flashes red when you are recording. It's so easy to use. If you have ordered a Marantz PMD620 hand held recorder in the past and loved it, this is your new replacement.

If you have had an old Marantz PMD620 and you love the built-in microphones, you will love this new replacement Deposition Recorder.

This recorders small and easy with amazing sound quality for court reporters

This is the lowest priced digital recorder now on the market, that you can use an AC adapter to power the recorder. All the manufacturers have removed the option of an ac power adapter and you are left with only using batteries. Luckily, this unit comes with an AC adapter so you can plug it in and record and never worry about batteries. You can record 400 hours on a 16GB card. 

Features:

• Up to 159 hours of recording in LP-MP3 format
• USB connector push up from the bottom of the recorder allows you transfer files to Windows and Mac computers
• Up to 96 hours of battery life with 2 AAA batteries
• MP3 recording/playback: capture high quality crystal clear audio, and listen back through the 300 mW front speaker
• Recording time: built-in maximum recording time memory of 159 hours in LP mode (MP3 8 kbps)
• Scene: select/choose the type of recording you want to capture (music, meeting, interview, dictation) for optimized settings
• Intelligent Noise: cut/enhances human speech for a much clearer audible range, and reduces distracting background noise
• Track: mark/add multiple bookmarks to each recording, and jump to next/previous during playback
• LCD: easily manage your recordings with the Dot-Matrix LCD
• Advanced recording: voice operated with Hi/Lo mic sensitivity, and folders to store and organize recordings
• Over 1000 hours of recording time plus Micro SD expansion slot for more time
• Multi-language support: activate for menu, message, and folder names (EN/DE/FR/ES/IT/RU)
• Supplied accessories USB, and 2 x Alkaline (AAA) batteries
• Measures 1.5 by 4.5 by 0.84 inches (2.13 cm) (H x W x D)

Next Generation Deposition Recorder Court Reporter, Recorder Package includes:

• High Quality Deposition Recorder
• AC wall Power adapter
• Simple instruction book
• Martel Telephone support